[HN Gopher] The Revenge of the Hot Water Bottle
___________________________________________________________________
 
The Revenge of the Hot Water Bottle
 
Author : Glench
Score  : 155 points
Date   : 2022-01-21 14:11 UTC (8 hours ago)
 
web link (www.lowtechmagazine.com)
w3m dump (www.lowtechmagazine.com)
 
| swilliamsio wrote:
| The fact that this website is solar powered is very, very cool to
| me. I will have to come back in a few hours and see if the
| Spanish night has taken it offline.
 
| pier25 wrote:
| I'm from Mallorca (Spain) and there you can still find tables
| with a brazier underneath. Hot water bottles made from rubber are
| very common too.
| 
| https://images.app.goo.gl/DG73Vs74i6RgQbyk7
 
  | harperlee wrote:
  | Huge carbon monoxide intoxication risk!
 
| Oem18 wrote:
 
| kowlo wrote:
| My wife gifted me a hot water sausage for work
| https://www.amazon.co.uk/dp/B08J2FK6KZ
| 
| Mine is a little longer...
 
| llampx wrote:
| In my opinion, electric blankets are a superior alternative to
| hot water bottles. They come in various forms such as throws,
| pillows and mattress toppers, and can be adjusted for temperature
| and don't need to be refilled. The only place they don't work is
| when you're on the move. For that you can nowadays get gloves
| with active heating that are powered by batteries, or chemical
| reaction handwarmers.
| 
| A good creative writing piece, but somewhat out of touch.
 
  | asciimov wrote:
  | You can't use electric blankets on foam beds as the foam
  | retains too much heat and you could end up cooking yourself.
 
  | edent wrote:
  | The problem is, once the blanket loses power it gets cold
  | pretty quickly.
  | 
  | Whereas you can boil a kettle in under a minute, decant the
  | water, and you can stay warm for hours.
 
    | gruez wrote:
    | That doesn't sound like a problem unless you're moving about.
    | If you're just sitting at your desk who cares if you need to
    | keep it plugged in?
 
      | rstupek wrote:
      | I think the point is "what if there's no electricity but
      | the gas stove still works"
 
  | helipad wrote:
  | Your suggested solutions don't work so well for sitting
  | outside.
  | 
  | When Covid made outdoor socializing necessary, we used out hot
  | water bottles at restaurants and at fire pits.
  | 
  | Blankets and gloves aren't as good at keeping nether regions
  | warm on cold surfaces, and anything that needs to be plugged in
  | is a no go. A minor point too but I wouldn't want
  | batteries/electrics around fire.
  | 
  | Our hot water bottles kept us toasty for hours and you could
  | also tell easily when it was running out of power, so to speak.
  | 
  | We've also taken them to winter cabins when you don't know how
  | convenient electrical outlets will be. You can have several of
  | them for when you're on the sofa, to pre-warm the bed, make the
  | dog cozy.
 
  | tstrimple wrote:
  | I would hope that Low Tech Magazine would focus more on "low
  | tech" solutions, such as solutions which don't require
  | electricity.
 
    | llampx wrote:
    | You got me there.
 
    | wffurr wrote:
    | You gotta heat the bottle; the most efficient method of which
    | is an electric kettle.
 
      | TremendousJudge wrote:
      | But electricity is not required, you can use a regular
      | kettle on a stove or even over a wood fire.
 
        | floren wrote:
        | You're not allowed to get a gas stove in California any
        | more.
        | 
        | Good thing we never have electric supply issues.
 
        | tstrimple wrote:
        | This isn't true. The requirement is just that new
        | constructions are ready for electric appliances. It
        | doesn't ban natural gas.
        | 
        | https://www.sfchronicle.com/local/article/No-more-gas-
        | stoves...
        | 
        | > A draft code update released Thursday by the California
        | Energy Commission would require new single-family homes
        | to be equipped with circuits and panels that would allow
        | them to be powered by all-electric appliances for
        | heating, cooking and drying clothes.
        | 
        | > The new code would not prohibit natural gas
        | infrastructure, a step many environmentalists would like
        | the state to take. But if the draft is ultimately
        | authorized by the commission this year, it would require
        | new homes to be "electric ready," meaning they're
        | prepared to be transitioned away from gas appliances if
        | any are used initially.
 
      | YXNjaGVyZWdlbgo wrote:
      | If you get a cold snap like in Texas last year with rolling
      | blackouts it's the perfect way to store the heat you can
      | produce while your electricity is running. When I camp in
      | late fall, early winter I always use a food safe water
      | bottle at night and reuse the water in the morning for
      | coffee or washing up with the added benefit that with a
      | good bottle the water is at least lurk warm.
 
      | Someone wrote:
      | I don't think so. On sunny winter days, you can heat them
      | in the sun, using a solar water heater
      | (https://en.wikipedia.org/wiki/Solar_water_heating) and let
      | them cool down at night, heating your body.
      | 
      | The low tech version is to paint them black and put them in
      | the focus of a roughly parabolic reflector.
 
    | nradov wrote:
    | You can build a low tech electricity generator with a water
    | wheel in the stream that runs behind your quaint little low
    | tech log cabin in the woods.
 
      | tstrimple wrote:
      | This is one of my favorite YouTube channels. Not quite "low
      | tech" because he has a ton of tools he powers off grid, but
      | he nails the quaint cabin feel with the house he built.
      | 
      | https://www.youtube.com/watch?v=0zh29DJI_wE&list=PLEZ2hvCDK
      | U...
 
| BenoitEssiambre wrote:
| I do ice in the summer (this is mentioned in the article). Great
| for when you have warm feet in bed. It works longer than the hot
| bottles because of the phase change which adds the equivalent of
| a 60 to 70 Celsius energy absorption.
| 
| I think you could do the same with wax for the hot version. Hot
| wax would last longer than hot water because of the phase change.
| I assume this is not commercially available because of the
| dangers of heating wax which should be done in a hot water bath.
| Some people would inevitably ignore the instructions and burn
| down their house.
| 
| Edit after a bit of research: Maybe the lesser heat capacity of
| wax offsets the benefits of the phase change.
 
  | GuB-42 wrote:
  | Besides heat capacity, the advantage of liquid hot wax is that
  | it stays at around 50degC during the entire melting process,
  | which is a good temperature for something that keeps you warm.
  | 
  | Instead of staying at an ideal temperature, water will
  | gradually cool down.
 
  | nickparker wrote:
  | Water also has an almost uniquely large enthalpy of melting. EG
  | paraffin freezing releases 1/3 as much heat as water
 
  | YXNjaGVyZWdlbgo wrote:
  | I use a cooling pad [0] for animals and it's amazing no
  | electricity just convection.
  | 
  | [0] https://www.amazon.com/Chillz-Cooling-Dogs-Large-
  | Size/dp/B00...
 
| blakesterz wrote:
| "The first "hot water bottles" - quite literally - were other
| people and animals. Since time immemorial, people have warmed
| themselves by huddling together"
| 
| I had to chuckle at that! Low Tech Magazine is such a cool site!
| So many really interesting things to read about there, low tech
| hacking at it's finest.
 
| josefresco wrote:
| When my mother was a child (Northeast US), they'd take baked
| potatoes to bed to keep their feet warm. Growing up we had one of
| the soft/red hot water "bottles" and it was used mostly when
| someone was in pain or sick.
 
  | nickkell wrote:
  | They also double as a midnight snack
 
    | josefresco wrote:
    | My mom said they'd bring them to school the next day for
    | lunch.
 
  | adventured wrote:
  | One side of my family were farmers in prior generations (mid-
  | Atlantic US). They utilized heated bricks in the same way that
  | you're describing the potatoes.
 
    | logosmonkey wrote:
    | Yeah, my mom (grew up in the rural south US) has told me
    | multiple times about how her mom would heat bricks fro the
    | beds each evening. They were very poor and had no central
    | heat so wood stove, bricks, and multiple kids to a bed (there
    | were 13 of them) was the go to winter strategy.
 
| kevinmchugh wrote:
| Very off-topic but if you've never seen someone inflate and burst
| a hot water bottle, it's really something. It's one of those
| goofy strongman feats, like tearing a phonebook in half, with a
| big bang at the end.
| 
| https://youtu.be/oM5ZzR2KBSQ
 
  | DaltonCoffee wrote:
  | Heheh, love that seam line.
 
| exhilaration wrote:
| If you need something portable while walking around the house, I
| recently bought this rechargeable heated vest for my wife
| https://fieldsheer.com/products/summit-vest-women-s# who hates
| the cold. She LOVES this vest, wears it every evening. This was
| possibly my most successful gift in our 12 year marriage.
| 
| And I don't mean to keep promoting this brand but I've got their
| heated ski gloves too and they're amazing. I was night skiing and
| saw that one of the ski patrol ladies had a lit LED on her
| gloves. I asked her what that was and he told me it was this:
| https://fieldsheer.com/collections/womens/products/storm-glo...
| (wait, I wear women's gloves?) They're fantastic, I wore them
| skiing in 10oF Vermont weather from 9am to 3pm on low heat. The
| batteries died around 3ish but I had hand warmers after that.
 
  | amelius wrote:
  | I want a sleeping bag with this.
 
    | mellavora wrote:
    | Which "this", a warm and grateful spouse, or a hot water
    | bottle?
 
  | JKCalhoun wrote:
  | Put off by the Bluetooth + phone app. Can you change the
  | temperature _without_ an app?
 
    | tppiotrowski wrote:
    | "The Summit Heated Vest has 2 ways to adjust the temperature.
    | First, the built-in waterproof touch control button. With a
    | simple button push, it lets you choose from 4 instant heat
    | settings with multi-colored LED indicator."
 
    | mcguire wrote:
    | Anyone else notice the irony given the article?
    | 
    | " _Low-tech Magazine questions the blind belief in
    | technological progress, and talks about the potential of past
    | and often forgotten knowledge and technologies when it comes
    | to designing a sustainable society._ "
 
    | exhilaration wrote:
    | Oh yes, we don't use the bluetooth functionality at all.
    | Everything on the vest is button-operated.
 
  | gertrunde wrote:
  | Favourite quote/snippet from the linked vest page:
  | 
  | "update your garments when new firmware becomes available."
  | 
  | Now there's a sentence that I suspect we wouldn't have imagined
  | 10 years ago...
 
    | jimmaswell wrote:
    | I recently got a whole series of heated gloves, socks, coat,
    | etc., and when I have them all on I think of the preacher
    | from Johnny Mnemonic.
 
  | odiroot wrote:
  | It's funny, but I'd like to have the complement of that! I'm
  | never cold in my torso, it's always only the arms and hands.
 
    | calt wrote:
    | Heat your torso and the arms and hands will get better
    | circulation and feel warmer as well.
 
  | Toutouxc wrote:
  | Can anyone recommend a well made EU-based alternative? The
  | Fieldsheer collection looks great, but duties and taxes.
 
    | semi-extrinsic wrote:
    | My parents have used the Therm-IC products for years,
    | especially socks for skiing, they've been happy with them.
    | 
    | Personally I find that either I'm doing low intensity
    | physical activity and I can just put on my Sorel Glacier XT
    | boots and Hestra Army Leather mitts and stay warm, or I'm
    | doing something more high intensity and my feet and hands
    | only need normal boots and gloves.
    | 
    | In both cases I wear a thick merino base layer, fleece
    | midlayer with varying thickness according to temperature and
    | activity level, and GoreTex Pro outer layer that has zippers
    | under arms and along thighs such that you can adapt
    | ventilation seamlessly to variations in activity level. This
    | works nicely from +5 C all the way down to -30 or -40 C
    | (depending on wind chill and humidity, you might not last
    | very long at -40 C though).
 
  | grogenaut wrote:
  | Wonder if they sell just the heat and controls. My wife
  | wouldn't like the material / style but would love to make her
  | own
 
    | mikestew wrote:
    | I say this only so that you know it's worth searching,
    | because I don't have any links handy at the moment: yes, you
    | can buy the wiring or carbon inserts separately as well as
    | some kind of controller. I say this because I've previously
    | researched such things for making heated motorcycle clothing
    | (which, when combined with the higher power of a motorcycle
    | electrical system, will keep you _balmy_ for as long as the
    | bike is running). One can do anything from sourcing your own
    | wire to buying pre-made carbon inserts (such as in heated
    | auto seats), to kits you just sew into the clothing. There
    | are pages that will tell you how to do the math for wattage
    | draw, etc., should you need such.
    | 
    | It's been a number of years since I've done this research, so
    | your options should be even more broad now, because heated
    | clothing that isn't motorcycle/snowmobile-specific is a
    | relatively new thing (thanks, lithium batteries!).
    | 
    | Anyway, the stuff is out there, you'll just have to go look
    | for it.
 
  | masklinn wrote:
  | FWIW an other option which turns out to be quite ridiculous for
  | heat is the _hanten_ (japanese winter vests).
  | 
  | They're thick padded cotton, and once the vest has warmed up
  | (which doesn't take too much time) it's _really_ warm and
  | comfy, if a tad bulky.
 
    | Tronno wrote:
    | Wool is more effective insulation than cotton, and also
    | insulates when damp/wet, unlike cotton (thus the saying
    | "cotton kills"). I suspect the reputation of this type of
    | jacket is more cultural than anything.
 
    | dahfizz wrote:
    | Isn't that just a regular jacket, in Japanese style?
 
      | masklinn wrote:
      | Not really. In terms of length it sits somewhere between
      | jacket and coat, but is also very much designed to be worn
      | indoor (as traditionally japan doesn't use central
      | heating). It doesn't much protect against the elements as
      | it has a non-overlapping lapel with cords stiched on the
      | edge for closure. In essence the front is mostly open, even
      | when tied.
 
        | recursive wrote:
        | I didn't even know jackets and coats were different
        | things.
 
  | randycupertino wrote:
  | > This was possibly my most successful gift in our 12 year
  | marriage.
  | 
  | My husband got me this heated blanket from LL Bean and it is my
  | absolute favorite gift he's given me in 15 years together! This
  | thing is amazing! I want to wfh just to curl my feet in the
  | blanket. https://www.llbean.com/llb/shop/124706
  | 
  | I want to get one for every family member now.
 
  | dehugger wrote:
  | I also got my wife a similar one a couple of years ago, and it
  | definitely marks the high-water mark for gift giving. I doubt
  | I'll ever be able to live up to it. You can also buy a spare
  | battery as a follow up gift the next year.
  | 
  | Now if only she would gift me one in return...
 
| JohnJamesRambo wrote:
| I would never use one of these because I know how clammy and cold
| it is going to be when the heat runs out.
 
  | thrwy_ywrht wrote:
  | Many/most hot water bottles have a knitted fabric cover. When
  | the heat runs out (which takes many hours), you are not in
  | direct contact with the rubber/plastic body of the water
  | bottle, so there is no sensation of cold or clamminess.
 
  | DocTomoe wrote:
  | Hm, the ones I am using usually are still warmer than body
  | warmth on the next morning... YMMV
 
  | Flashtoo wrote:
  | An alternative would be something like a bag of rice or cherry
  | stones. You can microwave them and they won't feel cold when
  | they lose their heat.
  | 
  | (See also https://news.ycombinator.com/item?id=30025026)
 
  | kaybe wrote:
  | The coldest they become is body temperature under the blanket.
  | It would only have a chance to become colder than its
  | surroundings if the water had a way to evaporate, which it
  | doesn't.
 
| thrwy_ywrht wrote:
| Hot water bottles are very popular in the UK for three main
| reasons that don't really translate to the US:
| 
| * Every household has an electric kettle
| 
| * Kettles boil very quickly (due to power differences)
| 
| * Most households have radiator-style heating, which takes much,
| much longer to heat up a room than US-style forced-air heating
 
  | frankus wrote:
  | I'm semi-seriously considering installing a few 240V outlets in
  | my kitchen when I redo it and smuggling in a European kettle
  | (any recommendations on a nice temperature-controlled one? I
  | use and like this 120V now: https://www.amazon.com/Bonavita-
  | BV382510V-Variable-Temperatu...)
  | 
  | The US secretly has 240V power almost everywhere, but we use
  | center-tapped transformers upstream of the service connection
  | that provide two 120V legs (180 degrees out of phase). So
  | lighting and appliances all get 120V (typically 15A), with the
  | exception of high-power items like cooktops, ovens, and these
  | machines we have for drying our laundry indoors.
 
    | Karrot_Kream wrote:
    | My partner and I use hot water bottles extensively (we both
    | grew up in immigrant households that used them). We have a
    | hot water boiler that we schedule to run in the early hours
    | of the morning before any of us are up to use cheaper energy
    | and have the water ready for us. We use the boiler for hot
    | water bottles, for brewing tea, for brewing coffee (well I'm
    | picky with coffee so I reheat the water to exact temp on an
    | old-fashioned stove kettle), for boiling noodles or pasta,
    | for cleaning caked on grime, etc etc.
    | 
    | I'd suggest that over redoing your outlet, though you will
    | have to periodically descale your water boiler, because of
    | sheer utility and portability (you can move and you'll still
    | be able to just plug it into a standard 1-phase 120V outlet.)
 
    | maccard wrote:
    | What you want is an instant water tap like a quooker.
 
  | 99_00 wrote:
  | I live somewhere cold and damp. I need this. Thermal clothes
  | and turning up the heat doesn't help.
  | 
  | Recently we had a bought of dry cold weather. In -10 C and dry
  | I was wearing less insulation and feeling warmer than +5 C with
  | high humidity. Real eye opener to understanding the impact of
  | humidity and how I can adapt to my winter climate better.
 
| mberning wrote:
| It's baffling that people have such a persistent and romantic
| fascination with regressive technology. Why enjoy whole home
| climate control when you can dress up like Nanook of the North
| while indoors and sit on hot water bottles? Why is the discussion
| not focused on how to make modern technology better, more
| efficient, more accessible?
| 
| Next week we will have a story about how suffering through summer
| heat with a wet towel and sleeping all day are "making a
| comeback".
 
  | oh_sigh wrote:
  | > Why enjoy whole home climate control
  | 
  | Because it is more expensive and more energy intensive than a
  | direct application of heat to the occupant's skin?
  | 
  | Some people care about their resource usage, or how much money
  | they spend on climate control. You also have situations where
  | multiple people live in the same climate control zone, and have
  | different preferences for temperature. If I like it at 67 and
  | my wife likes it at 74, and we're both uncomfortable at 70, how
  | can whole home climate control solve this issue?
 
    | bhandziuk wrote:
    | baffles, fans, AC and heat running at the same time,
    | bluetooth location tracking, robots following you around with
    | the right climate controlled temperature application,
    | monitoring your brow and toes with IR cameras to check that
    | you are perfectly comfortable. Duh, modern technology ftw!
 
  | Alekhine wrote:
  | You _can 't_ always make modern tech as energy efficient as
  | 'regressive' technology. There isn't always a magical solution
  | that addresses all problems. In my opinion, low-tech solutions
  | are often just simpler, while maybe lacking a bit of
  | convenience.
  | 
  | Here's an example, the open source community has spent
  | thousands of man hours developing various note-taking apps. And
  | they're pretty good, usually. I could use something like Foam
  | to manage my notes, learn to use the keyboard shortcuts, figure
  | out how to sync it between my devices, learn every other little
  | thing about it...
  | 
  | Or I could just use pen and paper. Which requires no
  | electricity, no computer, is durable and does not have a
  | learning curve to use.
 
  | analyte123 wrote:
  | Whole home climate control costs money. Why run up your gas or
  | electric bill to heat your entire 2000 sqft house to 78
  | degrees, when the only thing that needs that much heat is your
  | own body?
 
  | ssully wrote:
  | Some people have poor circulation. Even with whole home climate
  | control their extremities (hands or feet) will be ice cold for
  | awhile. Sure, there are more modern ways to warm your hands and
  | feet, but a hot water bottle is cheap and easy.
 
    | masklinn wrote:
    | Also heating up one's entire dwelling to comfortable-enough
    | temperatures could be much more expensive than dressing up a
    | bit and using that sort of accessories.
 
  | wolverine876 wrote:
  | Why write a few lines of code when you can use an entire
  | framework? Why walk two blocks or ride a bike when you can
  | drive?
  | 
  | > regressive
  | 
  | That depends on your definition of regressive. If you designate
  | it as regressive, you create a circular argument: it must be
  | worse, somehow.
  | 
  | IMHO, there's nothing inherently better about tech that is
  | newer - why do I care if it's newer? - and many see complexity
  | as the enemy of good engineering. Technology is tools and the
  | only question is, how well do they deliver on the needs and
  | specifications (which include efficiency and cost)?
  | 
  | > Why enjoy whole home climate control ...
  | 
  | Whole home climate control has more whole world climate impact,
  | so it doesn't deliver well on many people's specifications.
 
  | unbalancedevh wrote:
  | That was my first thought as well, but the article is pretty
  | thorough about the relative benefits of using a hot water
  | bottle, also asserting that the intent isn't to replace central
  | heating.
  | 
  | It's an option with some cultural history behind it, and might
  | be just the right solution for some use cases.
 
| tupac_speedrap wrote:
| They are good but make sure that the bottle is sealed properly
| and you don't have the bottle over your body while you sleep
| because people getting burned by these things is surprisingly
| common.
 
| Cerium wrote:
| In China there are hot water bags with integrated heating
| elements and thermostatic cutoff. I'm sure they are a single
| failure away from a steam explosion, but very convenient. I used
| some while visiting family in the winter.
 
| ColinWright wrote:
| Also discussed here:
| 
| https://news.ycombinator.com/item?id=30024127
| 
| We now use "Wheat Bags" ... cloth bags, usually cylindrical,
| filled with wheat. Heat in a microwave and use where one would
| use a hot-water bottle, but without the danger of a leak.
 
  | drewzero1 wrote:
  | They can certainly still leak, but the consequences are
  | different. Instead of getting wet and risking water damage you
  | have to sweep and vacuum wheat (or in my case rice) out of
  | everything. Still, much less harmful to electronics and wood
  | floors.
 
    | hammock wrote:
    | How about a big slug of cast iron? :)
 
      | voltagedivider wrote:
      | It wouldn't play nice with water and microwave ovens. I
      | guess you could heat it on the stove or in a regular oven
      | instead.
 
        | hammock wrote:
        | Yes that's the idea
 
        | masklinn wrote:
        | There used to be such device you'd heat up in boiling
        | water.
 
  | NikolaeVarius wrote:
  | Why wheat? The point of using water is that it can store alot
  | of heat.
 
    | ip26 wrote:
    | I think they are usually husks of some type. Cheap, smell
    | nice, conform to body, doesn't transfer heat fast enough to
    | hurt you, and for some reason heats up in microwaves.
 
      | QuercusMax wrote:
      | Not husks - those don't have enough heat capacity. I've
      | used ones made of corn and rice too. It's heating up the
      | actual grain seeds, which I guess have a fair amount of
      | water locked in the starch matrix. It always is a little
      | steamy coming out of the microwave.
 
      | GordonS wrote:
      | You can get ones with some lavender inside too - my kids
      | love them!
 
    | PeterisP wrote:
    | If it's not dry husks but full grain, they're mostly water by
    | weight anyway, so you get almost the same heat storage but
    | different other properties (no leaks, slower dispersal of
    | heat).
 
    | jonnycomputer wrote:
    | Rice works. Can just put in a sock and heat in microwave.
 
      | tempest_ wrote:
      | We made these as gifts for our parents when I was in
      | elementary school.
      | 
      | You can pop a clove or two in as well to mask the rice
      | scent.
 
        | jonnycomputer wrote:
        | nice idea!
 
  | brummm wrote:
  | They are very traditional and common in Germany. I remember
  | making them in primary school and selling at something like a
  | "bake sale".
 
  | mikro2nd wrote:
  | And they're not ice-cold sometime around 3 in the morning! They
  | stay at around body heat, so still give the feeling of being
  | warm.
 
    | teachrdan wrote:
    | If you want to really spoil yourself or your partner, place
    | the hot water bottle in bed about an hour early -- and then,
    | just before going to sleep, refill it with fresh hot water.
    | 
    | I find that between the bottle itself and the surrounding
    | sheets and mattress, a lot of heat is absorbed in that first
    | hour. Pre-heating everything should keep the hot water bottle
    | warm until morning. I find this to be an unreasonably
    | effective life hack.
 
    | themodelplumber wrote:
    | Yep, this is a huge benefit over water bottles. I tested out
    | both and it's nice to have water as a backup but the residual
    | heat effect has a longer tail-off.
 
    | yakshaving_jgt wrote:
    | I wasn't aware that this was a thing that happened. I use a
    | hot water bottle now -- the typical flexible rubber one,
    | encased in a little wooly jumper. I typically go to bed
    | around 01:30 with the hot water bottle under the covers near
    | my feet, and it's still warm around noon. I'm getting at
    | _least_ 12 hours of warmth from mine each night.
 
    | SamBam wrote:
    | Huh? Water has a significantly-higher specific heat capacity
    | than these dry powders, so will definitely stay warm many,
    | many hours longer. I can say this with experience: the hot
    | water bottle I put in my bed at midnight last night was still
    | warm at 7:30am, while the buckwheat cushions I got my kids
    | stay warm 15 minutes tops, no matter how hot I make them in
    | the microwave.
    | 
    | Even with the very best dry microwavable pillows, there will
    | be at least a 20x difference in heat capacity.
    | 
    | And your premise doesn't make sense. A hot water bottle under
    | the blankets will _also_ be at body temperature after (many)
    | hours. There 's no reason for it to get colder than the wheat
    | pillows. And the fabric covering feels just as warm.
 
      | masklinn wrote:
      | IME they're not necessarily wrong, HWBs without fabric
      | covering (which used to be relatively frequent a few
      | decades back for some reason) would feel really rather cold
      | in the morning, the rubber feels clammy. And because they'd
      | be way too warm early on, you'd push them to one side and
      | get close but not too close. So body heat wouldn't really
      | keep them warm once their eat is expended.
      | 
      | With a woolen cover or padded cotton, the heat release is
      | much slower and more uniform, so the HWB is more
      | comfortable, last a lot longer, and because you only touch
      | (relatively insulating / insulated) fabric it never feels
      | really cold.
 
      | zokier wrote:
      | I think the effect is more related to that water conducts
      | heat well, while cereal pillow will function as insulator.
 
  | kayodelycaon wrote:
  | I've done this with rice. :)
 
  | 2Gkashmiri wrote:
  | wait what? you mean dry bags.... ooooo
 
    | ColinWright wrote:
    | Yes ... more discussion here:
    | 
    | https://news.ycombinator.com/item?id=30025026
 
  | germinalphrase wrote:
  | We use rice, but same idea.
 
  | themodelplumber wrote:
  | I use these too, though ours are made with corn for some
  | reason. I guess the friends who gifted them were hanging with
  | the corn crowd on craft-Pinterest or something. They smell like
  | sweet Corn Nuts when heated, which is a pretty pleasant effect.
  | 
  | We do have a cylindrical one but the two biggest are shaped
  | like mini pillows, more rectangular patterned.
  | 
  | Combine them with a lap blanket, hot tea, brand new thick
  | winter socks, insulated slippers, a hoodie, 50 push-ups before
  | work and a 400W zone heater, and you will be able to survive my
  | office in the winter :D
 
    | rambambram wrote:
    | Exactly this haha. Even a relatively mild workout keeps my
    | body warm for hours. For cycling in the winter (which feels
    | especially cold after a warm bed) I used to take cold showers
    | before going outside. I can really recommend this, as the
    | outside temperature feels way more pleasant this way. Instead
    | of shivering the whole trip, I actually enjoyed going
    | outside. Besides, it mentally wakes you up like nothing else.
    | 
    | Edit: and indeed, don't forget the winter socks! I prefer
    | them in wool. Also a baggy fleece sweater/vest made of polar
    | fleece (which I can't find anywhere anymore) with the
    | thickest and highest collar possible.
 
  | fredley wrote:
  | I find they don't keep their heat nearly as long as hot water
  | bottles.
 
  | boringg wrote:
  | Also known as "magic bags" if you want to buy a premade one to
  | put around your neck!
 
  | phreeza wrote:
  | One of those (or similar, I think cherry seeds) caught fire in
  | my microwave once.
 
    | monkeybutton wrote:
    | Never had one catch fired but definitely overdone it before
    | and had it forever smell vaguely like burnt popcorn.
 
    | drewzero1 wrote:
    | I tried to heat two rice bags at the same time once and they
    | melted together. I didn't think about the fact that they had
    | used synthetic fabric! I'm so used to doubling the cooking
    | time because our microwave is only 600 watts (compared to the
    | usual 1000-1200 watts).
 
    | ColinWright wrote:
    | Indeed. It needs to be heated for 30 seconds, then "stirred",
    | heating again, _etc.,_ and the temperature needs to be
    | limited. We had one catch fire, but we patched it and it 's
    | good to go again.
    | 
    | I still prefer them over hot water containers. We have some
    | that are floppy and flexible, ideal for wrapping around the
    | back of the neck and over the shoulders.
 
      | jgrahamc wrote:
      | I have one of these that has cherry stones in it. I much
      | prefer the hot water bottle for two reasons. Firstly, I
      | fully understand the failure mode of the hot water bottle
      | and have rarely seen one fail; on the other hand the "cloth
      | thing that catches fire inside the microwave" is not a
      | failure mode I really want.
      | 
      | But most importantly, hot water bottles are really hot and
      | much better at keeping me warm.
 
        | ColinWright wrote:
        | We've had more than one hot water bottle fail and it's
        | resulted in one case in a soaked bed, which was
        | unpleasant and difficult to deal with. I _much_ prefer
        | the failure mode of  "catches fire in the microwave". The
        | fire is small (and mostly just a smouldering edge of
        | fabric), easily contained, easily put out, and the
        | failure is easily avoided.
        | 
        | We've used both and settled on the wheat bag, but I
        | recognise that other people will make other choices, and
        | that's fine.
 
  | joncp wrote:
  | You can just fill a sock with dry rice and tie it off. It's
  | cheap and easy and the hot rice smells good too.
 
  | hilbert42 wrote:
  | _"...use where one would use a hot-water bottle, but without
  | the danger of a leak. "_
  | 
  | Very interesting. Did you find any noticeable difference
  | between the longevity of its heating as compared with water?
  | The reason I ask is that the specific heat of water is higher
  | than that of wheat so water should retain the heat longer.
  | 
  | BTW, I'm familiar with hot water bottles, they were all the
  | rage when I was a kid before electric blankets became
  | commonplace.
  | 
  |  _P.S.: I can 't say I ever had one leak but I reckon I'd have
  | come close. After some use, they'd start to perish around the
  | filling point/screw stopper. The idea was to always keep an eye
  | on it and once one noticed the first signs of perishing then
  | not to gamble too long before replacing it._
 
    | ColinWright wrote:
    | My impression is that they don't last as long, but definitely
    | for long enough. People think that if you need to heat them
    | more often then it's less efficient, but if the heat doesn't
    | last as long then almost certainly they take less energy to
    | heat up in the first place.
    | 
    | It's all about transferring energy/heat from one place to
    | another.
 
    | Cass wrote:
    | I've used a bunch of different pillows (cherry stone, wheat,
    | etc) and found that, while the initial heat is great and
    | feels better than a hot water bottle, they only stay properly
    | hot for about five to seven minutes. Once when I had a bad
    | back pain day, I put the microwave next to the bed so I could
    | keep a constant reheating cycle going.
 
      | SamBam wrote:
      | I agree. The buckwheat-filled pillows I got my kid stay
      | warm about 10-15 minutes tops, no matter how hot I get them
      | in the microwave.
 
  | groby_b wrote:
  | Bonus points, they're shaped like cute animals and super-fuzzy.
  | Harder to do with a water bottle. (There are covers, but who
  | wants a soppy teddy bear?)
 
    | AndrewOMartin wrote:
    | Negative points. I come home and think my flatmate has put a
    | puppy in the microwave.
 
  | Sparkle-san wrote:
  | I recently discovered Warmies[1] which is essentially this but
  | inside a stuffed animal and scented with lavender and I'm not
  | ashamed to admit that I'm low-key obsessed with them.
  | 
  | [1]https://warmies.com/
 
| [deleted]
 
| goda90 wrote:
| My wife and I enjoy a rice filled sock. It has the added benefit
| of being able to wrap around our shoulder/neck when needed. Might
| be a bit harder to heat in a low-tech way than water though.
 
| newsbinator wrote:
| > The first "hot water bottles" - quite literally - were other
| people and animals. Since time immemorial, people have warmed
| themselves by huddling together.
| 
| Ha I never thought of it this way.
 
  | mc32 wrote:
  | 3-dog night. An expression inherited from shepherds and their
  | sheepdogs.
 
    | jstx1 wrote:
    | In case it's not clear - it means a night so cold that you
    | need 3 dogs in bed with you.
 
    | dreamcompiler wrote:
    | https://en.wikipedia.org/wiki/Three_Dog_Night#Name_origin
 
| frankus wrote:
| Water is a pretty amazing heat carrier. I did a bit of poking
| around for a project idea and couldn't really find anything with
| a higher heat capacity, at least for things that don't undergo a
| phase change.
| 
| I wonder if there's a semi-low-tech way of taking advantage of a
| phase change for extra capacity in something like a hot water
| bottle.
 
  | masklinn wrote:
  | > Water is a pretty amazing heat carrier. I did a bit of poking
  | around for a project idea and couldn't really find anything
  | with a higher heat capacity, at least for things that don't
  | undergo a phase change.
  | 
  | Pretty much the only thing better would be ammonia, and it's
  | not necessarily as good for water bottles: it has a higher mass
  | heat capacity, but a lower volume heat capacity.
  | 
  | And of course you're dealing with a large volume of ammonia,
  | which is not exactly innocuous.
  | 
  | > I wonder if there's a semi-low-tech way of taking advantage
  | of a phase change for extra capacity in something like a hot
  | water bottle.
  | 
  | There are reusable handwarmers which do that, you heat them to
  | liquid, then phase-change them to solid. The advantage is
  | mostly that you can _trigger_ the release though, their heat
  | capacity is not amazing.
 
  | smeyer wrote:
  | People take advantage of phase changes as a way to store
  | thermal capacity frequently. Here[0] is one designed to keep
  | your coffee hot by using a material with a phase change
  | temperature similar to a temperature folks like to drink
  | coffee.
  | 
  | [0] https://www.joulies.com/
 
    | calvinmorrison wrote:
    | Tangentially related are "Boveda" packets which are the
    | opposite of silica packets for keeping food dry, they keep
    | your box perfectly humidified. For optimal cigar storage or
    | consumption - the humidity is a huge factor. Boveda packs are
    | sold by target humidity and are pretty awesome
    | 
    | (protip: you can reuse them by soaking them in distilled
    | water for a while after they dry up0
 
  | falcolas wrote:
  | People were recommending wax elsewhere, since its phase change
  | is above 20degC.
 
| cheschire wrote:
| We bought some after some of the recent winter related power
| outages. Being able to capture gas-sourced heat (cooking water on
| the stove) and then being able to transfer it somewhere else in
| the house directly where we need it (under a blanket) is a killer
| app.
 
| madeofpalk wrote:
| fyi, you can see the article also at
| https://www.lowtechmagazine.com/2022/01/the-revenge-of-the-h...
| which lacks the distracting background
 
| fbanon wrote:
| The high-tech equivalent is an Intel MacBook Pro in your lap,
| running a clean build.
 
  | I_complete_me wrote:
  | Our main heat source as students was a HP 33S Scientific
  | Calculator; on really cold nights we input sqrt(-1).
 
  | meepmorp wrote:
  | Back in the day, I had a dual proc Athlon XP workstation that
  | also functioned as the main heating system for my apartment.
 
    | masklinn wrote:
    | With a P4 it'd have been a sauna instead.
    | 
    | In reality you'd need pretty low heating needs for that to
    | work, the bigger rigs would have a hard time reaching 1kW,
    | which is not even a portable heater.
 
| gumby wrote:
| For winter camping I use a Nalgene bottle full of boiling water,
| which I toss into my sleeping bag to pre warm it.
| 
| Before sleeping I pull it out and give it to the dog who knows to
| curl around it.
 
  | anon776 wrote:
  | I've read about a few cases where the nalgene pops/breaks and
  | leaves you with a wet sleeping bag. Which is one of my greatest
  | camping fears.
 
    | gumby wrote:
    | It's a legitimate fear as a wet sleeping bag could kill you
    | in the snow, but I've ever seen an actual Nalgene bottle fail
    | even when we tried driving a forklift and a bobcat over one.
    | I did crack one with liquid nitrogen but I don't camp at
    | those temperatures :-).
    | 
    | I've been given bottles made from other plastics but I've
    | always been dubious about them.
    | 
    | I have cracked the lids, but that takes a lot of work and an
    | aged lid. The lids are made of a different, softer material
    | which is more compliant to make a good seal. I do replace the
    | lids every few years.
    | 
    | Speaking of getting your gear soaked (not): a good habit in
    | the snow is to put a nalgene of water upside down into the
    | leg of each boot overnight to keep them from freezing. I
    | guess you'd be concerned about that too.
 
    | mleonhard wrote:
    | This happens when the air in the bottle warms up and
    | increases pressure which tries to expand the bottle. To
    | prevent this, fill the bottle with hot water, close it, shake
    | it for a moment to let the air mix with the hot water and
    | warm up, then open it just enough to equalize the air
    | pressure, and close it tightly. As the bottle cools, its
    | internal pressure goes down. External air pressure will try
    | to crush the bottle. External pressure is less likely to
    | damage the bottle than internal pressure.
 
| draw_down wrote:
 
| danw1979 wrote:
| Even more efficient, but not portable, are electric heat mats.
| I've had one under my desk this winter and between that and a
| couple of jumpers, I've not felt the need to have the heating on
| in my northern UK based home office.
 
  | skyfaller wrote:
  | Low-tech Mag wrote a little about heated clothes:
  | https://solar.lowtechmagazine.com/2013/11/heat-your-clothes-...
  | 
  | That article is a little silly because it's talking about
  | heated clothes only making sense indoors (from an energy saving
  | perspective), since it can allow you to use less energy heating
  | your home. If you are sitting around in your house, electric
  | heating pads or blankets probably make more sense than plugging
  | your clothing into the wall, especially since plug-in clothes
  | don't really exist, but heating pads / blankets do.
 
  | germinalphrase wrote:
  | An electric mattress pad is a definite modern luxury up here in
  | Minnesota. Snap it on an hour or two before bed. Toasty warm
  | sheets and blankets.
 
  | zemvpferreira wrote:
  | An electric blanket in every bed has been my only winter must-
  | have since I turned 30. I never turn on heat and I walk around
  | in shirt sleeves all winter, but getting into a cold bed is
  | torture (especially since I sleep naked with only one blanket).
  | 
  | It's the most comfortable thing I've ever experienced and I've
  | converted 10s of people to my religion. Electric blankets in
  | every bed!
 
    | DenisM wrote:
    | Are you not worried about electric shock? Blankets get worn
    | out over time, and then there is possible liquid damage...
    | 
    | I'd love me a <36v blanket but 110v or even 220v gives me the
    | willies.
 
    | dsr_ wrote:
    | Your profile says that you live in Lisbon.
    | 
    | Lisbon's average January low: 47F = 8.3C
    | 
    | Boston's average January low: 23F = -5C
 
      | mcguire wrote:
      | From the article:
      | 
      | " _Because I don't have the time nor the budget to send hot
      | water bottles to everyone, I have written this article.
      | It's largely based on my personal experience - I have been
      | using hot water bottles for many years and they are the
      | only heat source in my apartment._ "
      | 
      | But then, " _Low-tech Magazine is written by Kris De Decker
      | (Barcelona, Spain)._ "
      | 
      | Barcelona's average low in February is 47F, too.
      | 
      | It's currently 32F (0C) here in lovely northern Alabama.
 
      | soperj wrote:
      | Edmonton average January low: -15C
      | 
      | And there are people that go around in shorts in the winter
      | there too. What's the point of this?
 
        | zemvpferreira wrote:
        | I'm not sure either. To clarify I was merely trying to
        | illustrate that I am not a cold person and I still love
        | love love my electric bed warmers. There's something
        | magical about going from a cold room into a really warm
        | bed and I'll never sleep another winter without one if I
        | can help it.
 
        | dsr_ wrote:
        | The point is that in Lisbon, perhaps it's reasonable to
        | shut off your heating and use hot water bottles. That's a
        | route to suicide in Boston or Edmonton.
 
        | soperj wrote:
        | If you didn't freeze to death, your pipes would
        | definitely freeze without any heat whatsoever.
 
  | GordonS wrote:
  | My home office here in NE Scotland is a converted garage, which
  | despite being converted "properly" and having a radiator, is
  | always cold (as low as 14C). The heat mat sounds interesting,
  | but I when I googled only underfloor heating stuff came up -
  | any chance you could point me towards a link please?
 
    | ianmcgowan wrote:
    | At least in the US, a google/amazon search for
    | electric+foot+warmer comes up with some good options. My feet
    | are in one right now!
    | 
    | https://www.google.com/search?q=electric+foot+warmer
 
    | tonyedgecombe wrote:
    | Perhaps something like this under your feet:
    | 
    | https://www.amazon.co.uk/Waterproof-Electric-Temperature-
    | Adj...
 
    | post_break wrote:
    | Maybe he's talking about an electric blanket. Or you can use
    | an electric heat pad for sore muscles. Just turn it on and
    | put your feet on it.
 
| parenthesis wrote:
| As a child, we had an electric kettle on the upstairs landing
| specifically for hot water bottles. Not being next to a sink,
| we'd simply empty the water from the cold hot water bottle back
| into the kettle.
 
| elric wrote:
| I use my laptop's power brick as a foot warmer. Works remarkably
| well in winter, and it's a great use for what is otherwise waste
| heat.
 
| Pompidou wrote:
| Hot water bottle. In french we have a specific name for this tool
| : "bouillotte", from verb "bouillir" (boiling) and sufix "otte"
| (diminutive). Everybody in my familly use it. My ex wife was
| litteraly addicted to it.
 
| djhworld wrote:
| Really appreciate my hot water bottle in the winter, pop it in
| the bed 5-10 minutes before climbing in and it's wonderful.
| 
| Oddly I also like a really cold bedroom, I have the window open a
| bit mostly all year round.
 
| throwaway946513 wrote:
| While the submitted link is wholly appropriate and I take no
| issues with it - I much prefer and enjoy reading Low Tech
| Magazine from their solar subdomain.
| https://solar.lowtechmagazine.com/2022/01/the-revenge-of-the...
 
| leecarraher wrote:
| was kind of hoping for a more analytical take, comparing their
| efficiency to the newish slate of battery powered personal
| heaters, or older iron-oxide single use heaters. My guess is the
| newer electronic devices allow for more consistent heat, but at a
| much higher entry cost, and less flexible charging. I wonder if
| an mechanically adjustable thermal barrier could be employed in a
| hot water device, that could provide a more consistent heating
| experience.
 
| rdtwo wrote:
| Anyone use an inconspicuous one to keep warm in the office while
| working? What does it look like?
 
  | fredley wrote:
  | If I'm cold at work I just zip one up inside my hoodie.
 
| kipchak wrote:
| Hot water bottles or heat bags are nice for keeping limbs warm
| also, especially if you don't have great circulation. heavyweight
| base Layers and hot tea do a great job keeping your core
| temperature up, but you have to get creative keeping uncovered
| fingers warm while typing.
 
| shimonabi wrote:
| I just remembered I inherited a "termofor" from my grandmother.
| 
| It's filled now with hot water after 7 years.
 
| infologics wrote:
 
| danka wrote:
| Mobile-friendly URL - https://outline.com/XFtrM5
 
| stakkur wrote:
| Last year, when we were without electricity for a week, we used
| hot water bottles to heat the beds and generally for warmth and
| comfort. They're cheap, stay warm for _hours_ , and have many
| uses. I recommend getting several for your home 'emergency' kit.
 
| 2Gkashmiri wrote:
| i use it daily. heck, for a family of 3 we have 5 in circulation
| for today. i find hat a tad bit excessive but coughing in the
| home has caught up so its fine. we usually buy every year for
| winter for like inr ~160-300 or $ 3-4. lasts the winter season
| and shitty products leak in the bed, either causing you a burnt
| leg in the morning or a dripping bed. all in all, a good thing.
 
| pierrebai wrote:
| I personally use a bean bag. I put it 2 minutes in the microwave.
| Seems simpler than heating water.
 
| bradly wrote:
| dang: can you close/merge this with
| https://news.ycombinator.com/item?id=30024127 ? They are both on
| the home page currently
 
| tppiotrowski wrote:
| I remember a story from college in early 2000's. The university
| was trying to cut energy use by 20% by 2020. The professor asked
| how much power would be saved if we turned off every light,
| computer and unplugged all other electronics: 12%.
| 
| This was an eye opening moment. LED's are great but if you really
| want to make a dent in energy usage of buildings it's heating and
| ventilation. Why can't we live in a world where everyone wears
| heated clothes and we just leave the windows open (even in
| winter)?
| 
| Seems like heating a person is much more efficient than heating
| an entire house, in which we never occupy more than 1% of the
| available floor space at any one time...
 
  | qwertox wrote:
  | > ventilation. Why can't we live in a world where everyone
  | wears heated clothes and we just leave the windows open (even
  | in winter)?
  | 
  | Sounds pretty radical, but if you think about it, it sounds
  | interesting. Specially now with the pandemic. In the first
  | months our schools in Germany were forced to leave their
  | windows open, even in the winter. I don't know how long they
  | did this, but it must have been hard for them.
  | 
  | If everybody had such heated clothing, this sounds like an
  | interesting idea, including in the context you're putting it
  | in.
  | 
  | Then again, buildings need to be kept warm so that the humidity
  | doesn't cause mold.
 
  | jimmaswell wrote:
  | Because the tradeoff of energy usage is worth the improvement
  | to quality of life.
 
    | tppiotrowski wrote:
    | Anecdotally, I hear at least a few friends each year
    | complaining about the cost of heat during winter.
 
      | mcguire wrote:
      | Complaining, but not doing anything about it?
 
  | inglor_cz wrote:
  | I knew a family that struggled to pay their bills and in
  | attempt to get even they reduced their inner home temperature
  | to 13 degrees Celsius (about 55 F).
  | 
  | They were constantly miserable, because their hands, nose etc.
  | were cold. You cannot really perform most of your home
  | activities with gloves on.
  | 
  | Plus, the lady suffered from incessant UTIs.
 
    | qwertox wrote:
    | This winter I waited a lot with starting to heat, so I kept
    | the place at around 16degC. Then when the first sub-zero days
    | came I put it on, but I lowered the temperature of the
    | thermostats by 1 degree compared to last year. It's
    | absolutely ok. Maybe it's good to do such a test for a while
    | to see how you can adapt to it.
 
    | masklinn wrote:
    | I've got friends who live at 15C or so in winter.
    | 
    | You need good clothing, but also a certain constitution which
    | does not eagerly pull blood from your extremities. A beard
    | probably helps as well.
 
  | whtrbt wrote:
  | We use a kotatsu [0] for this - a table with a heating element
  | underneath and a thick quilted 'tablecloth'. I'm in Melbourne,
  | so the lowest it gets is a few degrees above 0C, but we _never_
  | use air con/heating. Summer we close the blinds in the day,
  | open blinds and windows up at night.
  | 
  | It's not fair to expect that approach to work for everyone
  | everywhere, but there are plenty that could do this instead of
  | wasting so much energy on creating a homogenous environment
  | year round.
  | 
  | [0] https://en.wikipedia.org/wiki/Kotatsu
 
    | baud147258 wrote:
    | > that could do this instead of wasting so much energy on
    | creating a homogenous environment year round.
    | 
    | The worse is when the office aircons are set so low that you
    | catch a cold in the middle of the summer heatwave...
 
      | ryanianian wrote:
      | Cold temperatures do not make infectious diseases like
      | colds more transmissible.
 
    | almog wrote:
    | I've been thinking about converting my work desk to a Kotatsu
    | in the winter based on an Arduino project I've found sometime
    | ago. At the moment though I'm using an infrared incandescent
    | bulb mounted just above my keyboard + a floor heating sheet
    | mounted to a piece of plywood for my feet.
    | 
    | btw, the Arduino project is this one:
    | https://create.arduino.cc/projecthub/simp-team/how-to-
    | make-a...
 
      | ryanianian wrote:
      | I keep my wfh office around 70f but my desk is right by a
      | huge window, so my hands get very cold when it's freezing
      | outside, making typing and desk-work annoying.
      | 
      | I got a little heated desk/writing pad online, and it is
      | amazing.
      | 
      | With it turned to high it becomes almost too warm to touch.
      | The mouse and keyboard heat comfortably. After a couple
      | hours I can reduce the room temp a few degrees and still
      | feel rather comfortable.
 
  | decafninja wrote:
  | My wife and I live in the same condo I used to live in as a
  | bachelor. My frugal single self saw the electric bill for
  | heating and AC around $50/month. I would only use the heating
  | or AC for an hour or two when I got back from work, which would
  | be enough to heat or cool the apartment until morning.
  | 
  | After we got married and my wife moved in, we use the heat a
  | lot, lot more since she can't stand the cold (she's fine
  | without the AC - even more so than me). The electric bill
  | during the peak winter months easily balloons to $300-400 now.
 
    | Tronno wrote:
    | $300-400 could be the electric bill for a large house (in
    | winter). If this is what you're spending to heat a small
    | apartment, something may be wrong with your building.
 
  | 99_00 wrote:
  | >Seems like heating a person is much more efficient than
  | heating an entire house
  | 
  | Frozen pipes, and possibly other issues I'm not thinking of.
  | 
  | No need to go to extremes. Turn down the heat during the day
  | and wear a sweater. People have to spend time outside anyway so
  | they should already dress warm.
  | 
  | At night turn off the heat or down significantly more. Have
  | warm comforter. Set the timer to turn the heat on before you
  | wake up.
 
  | falcolas wrote:
  | > just leave the windows open (even in winter)?
  | 
  | Because even with heated clothes, you can get frostbite on
  | exposed skin. Not to mention frozen water pipes, the effective
  | inability to remove clothes to clean yourself, and technology
  | stops working when it gets too cold.
  | 
  | Even igloos are at or above freezing on the inside.
 
    | fulafel wrote:
    | You don't get frostbite sleeping in tent in the winter with
    | suitable bedding or sleeping bag, so it shouldn't be a
    | problem in a building. Changing clothes and cleaning in
    | winter camping works out as well.
 
      | GavinMcG wrote:
      | The response was about leaving the windows open. Do you
      | leave the door of your tent open when you winter camp?
 
| giantg2 wrote:
| Hot snapz makes hand warmers and larger sizes that are
| rechargeable by boiling in water. Interesting stuff.
 
| Accacin wrote:
| Didn't realise they weren't so popular, I know a lot of people
| who use them here. Lovely in bed!
 
| [deleted]
 
| vardagsnytt wrote:
 
| ricardobayes wrote:
| Hah, so nice. It was just earlier today we discussed our newfound
| love for this little device in my family.
 
| lowbloodsugar wrote:
| in Scotland, it's not a "foot warmer". it's a piggy.
 
| zwieback wrote:
| We have four of them at our house and one at our weekend place.
| And this is in Western Oregon where it doesn't really get cold.
 
| kbos87 wrote:
| It's a pretty common winter camping trick to fill a water bottle
| with boiling water, put a sock over it, and put in your sleeping
| bag while you sleep. Works extremely well!
 
  | Lio wrote:
  | I just replied the same thing. It's an excellent hack.
  | 
  | Was going to add a warning not to drink the water from plastic
  | bottles though due to plasticisers.
  | 
  | Unlined Ti metal bottles should be fine though.
 
    | mprovost wrote:
    | Modern Nalgenes are BPA free and don't contain plasticisers.
 
    | blacksmith_tb wrote:
    | I'd say that argues for using the ol' Nalgene etc. only as a
    | foot-warmer, and drinking out of the metal bottle?
 
      | Lio wrote:
      | Ideally yes but it's really hard to find fully metal
      | driking bottles.
      | 
      | If you buy something like a Sigg aluminium bottle or no-
      | name copy it will be lined with some kind of plastic.
      | 
      | If you use a light weight drinking bladder that will be
      | plastic too. I've read that risk is much higher if you
      | apply heat to a plastic container. This is why you should
      | avoid microwaving in plastic containers.
      | 
      | So that leaves you either only using a cold liquids in
      | plastic and accepting some risk or buying expensive (and
      | relatively heavy) titanium drinking bottles.
 
        | rkk3 wrote:
        | > Ideally yes but it's really hard to find fully metal
        | driking bottles.
        | 
        | Klean Kanteen?
 
        | mprovost wrote:
        | Using an insulated bottle kind of defeats the purpose
        | which is to transfer heat from the water to yourself.
        | You'll wake up in the morning with a bottle full of hot
        | water but you'll still be cold.
 
        | Lio wrote:
        | Just looked them up. Looks really nice.
        | 
        | Maybe a bit heavy for me when hiking but really nice for
        | day to day stuff.
        | 
        | I like the Vargo stuff. Also the new Keego flexible
        | bottles look really interesting.
 
| bitxbitxbitcoin wrote:
| Spent the summer with the Nevada Conservation Corp doing trail
| and restoration work a week at a time.
| 
| Hot Nalgenes are indeed still all the rage for keeping warm in
| your sleeping bag at night.
 
  | anarazel wrote:
  | Just don't forget to budget for the increased fuel consumption
  | for heating that water :). No experience around that,
  | personally, ahem.
 
| jgrahamc wrote:
| Maybe it's because I am British but hot water bottles have been
| something I've owned and used forever. They just exist as a thing
| you use. To warm the bed, or your feet, or your back. Given that
| the British also have electric kettles for warming water they are
| simple to use.
| 
| I did try to buy one here in Portugal and I was sent to the
| pharmacy where they had a tiny little one that you might use for
| pain relief.
 
  | kranner wrote:
  | They're common in India as well. My dad uses one every day in
  | the (North Indian) winters.
 
  | chrisseaton wrote:
  | In my British household we call the cylinder foot warmer ones
  | 'mother cats'.
 
    | masklinn wrote:
    | What is the "proper" name for these? Last time I looked for
    | foot warmers all I got was electric bootstie things, or
    | hotplates for foot. So I got a small radiant heater instead.
    | 
    | Though I guess a microwavable grain bag on a normal footrest
    | would also work.
 
      | Someone wrote:
      | Wikipedia (https://en.wikipedia.org/wiki/Foot_stove) says
      | its restricted to wooden ones with hot charcoal, but I
      | would call them "Foot Stove" regardless of construction
      | material or heat source.
 
        | thom wrote:
        | Never seen one of these, but my dad used to have charcoal
        | hand warmers similar to this:
        | 
        | https://www.amazon.co.uk/Pocket-Hand-warmer-charcoal-
        | includi...
        | 
        | We used to take them to football matches but eventually
        | they became the sort of thing they'd confiscate cos fire
        | and idiots don't mix.
 
  | mattl wrote:
  | Yeah, British expat now American here... I buy people kettles
  | and hot water bottles if I'm going to be at their home for any
  | extended amount of time. Also a toaster.
 
    | Turing_Machine wrote:
    | As I understand it, electric kettles never became as popular
    | in the United States (though of course they do exist) because
    | the electrical standards here mean that it's infeasible to
    | make one that works really well -- a British electric kettle
    | might be rated at 3,000 W (about 13 A at 230 V), but a
    | standard U.S. convenience outlet can only provide about 1,800
    | W (15 A, 120 V). Even the higher-rated 20 amp outlets are
    | only going to get you 2,400 watts. To get 3,000 watts, you'd
    | either need a special circuit (like the ones for RV hookups),
    | or plug it into a dryer or electric range outlet.
 
      | lewsid wrote:
      | I live in the US and have an electric kettle. I was made
      | aware of their existence in my travels abroad. It was a
      | game-changer. Even with our electrical standards my kettle
      | can get to boiling in a mere minute or two.
 
      | ssully wrote:
      | I just assumed they never took off here because tea isn't
      | as popular in America. The only people I know who own
      | kettles in America are people who regularly drink tea,
      | including myself.
 
        | txg wrote:
        | I drink both, but now use my kettle almost exclusively
        | for the awful indulgence of pre-mug warming before
        | dropping in the espresso from my stove-top pot.
 
        | [deleted]
 
        | wtetzner wrote:
        | I also use mine to make coffee (via a French press).
 
        | time_to_smile wrote:
        | Or pourover coffee which, at least anecdotally, I've seen
        | become much more popular over the years.
 
      | vel0city wrote:
      | I dunno, tons of people I know in the US have electric
      | kettles. Its not like its incredibly painful to use them,
      | and they'll still usually beat out using the microwave to
      | heat water quickly, but only slightly. While it is about
      | half as much power than most of Europe, its still only a
      | few minutes to go from tap water to boiling. It is not like
      | we're talking hours to get it to boil.
      | 
      | From my experience one of the biggest reasons why people
      | don't have an electric kettle is because they often don't
      | think they have a use for them. Tons of people in the US
      | would really only use it for making coffee, of which drip
      | coffee makers were incredibly popular for a long time. So
      | needing fast hot water is somewhat rare, and usually when
      | its needed in regards to cooking you can just measure your
      | water in a measuring cup and microwave it for a couple of
      | minutes which is just about as fast.
      | 
      | The people I know who actually use electric kettles in the
      | US are:
      | 
      | * Those who brew a lot of tea (far less common in US than
      | globally)
      | 
      | * Those who often do alternative coffee brewing methods
      | (pour over, french press, aeropress, etc)
      | 
      | * Those who make a lot of ramen or other instant noodles
      | and have limited kitchen spaces (college students)
 
      | 0xbadcafebee wrote:
      | Our electric kettles work just fine on 110VAC. We're just
      | isolated from the rest of the world so external cultural
      | changes don't take hold. We still use Imperial measurements
      | and serve half-pints of beer. Same reason Japan has an
      | "old" World Wide Web; it works fine for them, and their
      | culture doesn't change easily.
 
        | Turing_Machine wrote:
        | It depends on whether taking more than twice as long to
        | heat the water is "just fine" for your use case.
        | 
        | Me, I use the high output burner on the gas range and a
        | traditional kettle.
        | 
        | Note that other European and Asian kitchen gadgets have
        | had no trouble making inroads in the United States. While
        | some people obviously do have electric kettles here,
        | they're far, far from being the ubiquitous thing they are
        | in British kitchens.
 
      | js2 wrote:
      | I bought an electric kettle[1] a decade ago shortly after I
      | switched to an Aeropress for coffee. I now drink green tea
      | a couple times a day in addition to my morning coffee. I
      | think most Americans just don't have much cause to heat
      | water for anything except coffee, and they use a coffee
      | maker for that.
      | 
      | My kettle is 1500 watts and I just timed it. Heating a bit
      | over 1L (~36 oz) of water from 68degF (20degC) to 200degF
      | (93degC) took 4:20.
      | 
      | It's one of those things where the first time you use it,
      | you can't imagine ever not having one, assuming you have
      | cause to heat water on a regular basis.
      | 
      | Still don't own a toaster though. A toaster oven does fine
      | with toast and can be used for a lot more besides.
      | 
      | Don't own a rice maker either. That's been an ongoing
      | negotiation with my wife for 25 years now. :-)
      | 
      | [1] https://www.amazon.com/Cuisinart-
      | CPK-17-PerfecTemp-1-7-Liter...
 
        | vel0city wrote:
        | I have a basic rice cooker and I absolutely love it.
        | Perfect rice every time without having to think too hard
        | about measurements or the time, as the measurements are
        | stamped on the bowl (fill rice here, fill water here) and
        | it will always switch to warming mode at exactly the
        | right time. I wouldn't bother getting a fancy
        | computerized model, the old thermostatic ones are pretty
        | much perfect.
        | 
        | Technology Connections video on old-style rice cookers:
        | https://www.youtube.com/watch?v=RSTNhvDGbYI
        | 
        | We have that exact same kettle, its wonderful.
 
        | greenonions wrote:
        | My wife convinced me to buy what I would consider an
        | expensive rice cooker, computerized. Now the rice is
        | fantastic, I'll admit. However, I'm not really convinced
        | that it's worth 6x a basic rice cooker.
 
      | etblg wrote:
      | Electric kettles are very common in Canada and we have the
      | same power systems as the USA. I've never found that the
      | electric kettles here are painfully slow or anything, it's
      | just a culture thing on who wants boiling water on demand
      | more I guess.
 
        | ska wrote:
        | > I've never found that the electric kettles here are
        | painfully slow or anything,
        | 
        | You probably would if you were used to UK kettles...
 
        | etblg wrote:
        | I guess, but my kettle finishes boiling right as I finish
        | hand-grinding my coffee beans, so I can't say it's been a
        | big issue in my life.
 
      | hadlock wrote:
      | Electric kettles are finally starting to get traction here,
      | we use ours for tea and instant coffee, and pre-boiling
      | water for making noodles on the stove since it's so much
      | more efficient.
 
      | txg wrote:
      | On my twelfth year of North-American kettle operation I've
      | gotten past the tedium of waiting extra minutes for the
      | water to boil.
      | 
      | Visiting my family, however, I now have to flick the switch
      | on twice - autopilot usually means the water has cooled
      | below the supposed optimal infusion temperature by the time
      | I return to the kitchen.
 
      | extrapickles wrote:
      | Unless you are in an apartment/condo in the US (which can
      | have 208V), you likely have 240V power in your house. I
      | have a 240V 15A outlet in my kitchen so I can use a British
      | kettle with a swapped plug. It would be nice if it was
      | standard to have 240V outlets in US kitchens.
      | 
      | Note: If you are wanting to do this yourself, if you get
      | one with any electronics in it (even an led power light),
      | you should modify the capacitive dropper power supply for
      | the electronics to operate on 60hz. For a well designed
      | circuit, forgetting to do so means a resistor/zenier will
      | be running hotter, for a very cheap circuit it can let
      | magic smoke out.
 
      | bryanlarsen wrote:
      | 15A outlets are only rated that for instantaneous current.
      | For continuous current, appliances are only allowed to pull
      | 80%. So kettles in the US are 1400W, half that of British
      | kettles.
      | 
      | Like many modern kitchens, I have 20A outlets. Current code
      | says that you either have to have 20A circuits in the
      | kitchen or split 15A circuits. What the electrician chooses
      | to install depends on whether 14/3 or 12/2 wire is cheaper
      | that day.
      | 
      | One of my pet peeves is that I can't buy a 20A 1900W
      | kettle. There has to be enough market demand for one? Put a
      | big picture of a NEMA 5-20 outlet on the front so that
      | fewer people get confused.
 
        | nums wrote:
        | 14/2 or 12/2 :-)
 
        | bhandziuk wrote:
        | 14/3 was right. They were trying to describe a MWBC.
        | Though you can have 20 A MWBCs too (12/3)
 
      | elliottkember wrote:
      | I recently bought a Zojirushi water boiler. Instant hot
      | water all day. Never going back to a kettle.
 
    | 7thaccount wrote:
    | I normally just throw on a blanket or turn up the thermostat,
    | but I know you normally don't adjust the thermostat at
    | someone else's house.
 
      | Jill_the_Pill wrote:
      | I think the idea of the article is, in part, that heating
      | people is more efficient/economical than heating space.
 
        | 7thaccount wrote:
        | Fair enough. I mean I guess these methods were pretty
        | effective for centuries where people somehow didn't
        | freeze to death.
 
    | djrogers wrote:
    | > Also a toaster
    | 
    | Err, wha? I don't know anyone here without a toaster - or
    | 2...
 
      | _jal wrote:
      | I've never owned one. I very occasionally toast bread in
      | the broiler.
 
      | mattl wrote:
      | A lot of people use a toaster oven to make toast, it seems.
 
        | Cupertino95014 wrote:
        | Indeed, and you can toast odd-shaped "breads" that won't
        | go down a toaster slot.
 
        | function_seven wrote:
        | What's the difference between a pop up slice toaster (I
        | assume that's what you're talking about) versus a toaster
        | oven?
        | 
        | I grew up with the first kind, but now only use the
        | second kind to reduce clutter on my countertop. I never
        | detected a difference in the two methods, but I'm also
        | not very observant!
 
        | mattl wrote:
        | It might be a cultural thing but a slice toaster is way
        | more of a set and forget operation, which I like... also,
        | a toaster gets based used for one thing and a toaster
        | oven is used for a lot of other foods, and I have to
        | worry about cross contamination.
 
        | function_seven wrote:
        | Oh that makes sense. I use mine 80% for toast and the
        | remaining use is usually bread-adjacent things.
        | 
        | If I was also using it to heat up chicken tikka masala or
        | something, then that would probably not be good.
 
        | jayd16 wrote:
        | I can melt cheese over bread or bagel in a toaster oven.
 
        | function_seven wrote:
        | Yeah, that's one thing I discovered when I stopped using
        | a slice toaster. I can put a cold pat of butter on the
        | bread about halfway through the toasting process, and
        | avoid the trauma of trying to spread cold butter on the
        | toast.
 
        | burkaman wrote:
        | Toaster oven should be a lot less efficient and slower
        | because it's heating up a larger space, but the result
        | should be the same.
 
        | r00fus wrote:
        | I do this mostly because I buy loafs of ciabatta or
        | baguette, cut and freeze them.
        | 
        | Trying to get those odd/thick shapes after freezing into
        | a slice toaster was challenging, and we already had a
        | toaster oven so I never replaced my slice toaster when it
        | died.
 
      | jimmaswell wrote:
      | Highly recommended toaster:
      | http://automaticbeyondbelief.org/
 
        | lolinder wrote:
        | Seconded on the Sunbeam! We inherited my father-in-law's
        | when he moved across the country. He inherited it from
        | _his_ parents.
        | 
        | It's been in constant use for at least 60 years (I'm not
        | sure when his parents got it), and is now making perfect
        | toast for a fourth generation.
 
        | javajosh wrote:
        | I prefer toaster ovens because _cookies_. You can make
        | cookie dough and make one or two cookies at a time,
        | ensuring they are always fresh out of the oven.
 
        | rurp wrote:
        | Wow that's a great idea! It's one of the pieces of advice
        | that seems obvious once I hear it but I never would have
        | thought of it myself.
 
      | chrisseaton wrote:
      | People tell Americans rarely put butter on bread in
      | sandwiches, so what do you put on your toast?
 
        | jayd16 wrote:
        | We put mayonnaise on sandwiches instead but we use butter
        | for toast.
 
        | wtetzner wrote:
        | Interesting. I always butter my bread. Sometimes I'll
        | also put other stuff on it, but always butter first.
 
        | Turing_Machine wrote:
        | Toast is usually buttered, but it's not considered to be
        | a sandwich in and of itself in the United States.
        | 
        | Now, a sandwich can be made with toasted bread,
        | certainly, but in that role it's normally slathered with
        | mayonnaise, mustard, or something of that nature rather
        | than being buttered.
        | 
        | Exception: grilled cheese sandwiches are often buttered,
        | though with those they typically have the butter on the
        | outside. On the inside is either nothing or (my
        | preference) mayonnaise.
 
        | derefr wrote:
        | One of those "chef lifehacks" that stuck with me is that
        | you can use mayo in place of butter on the outside of a
        | grilled cheese. Easier to spread, browns perfectly, and
        | turns out to taste exactly the same. (Which is
        | surprising, given that every time I've made a grilled
        | cheese with any kind of oil in place of the butter, it's
        | turned out disgusting. Emulsifying the oil fixes the
        | problem somehow.)
 
        | lief79 wrote:
        | Hmmm, I've made a great one with olive oil and sun dried
        | tomato bread.
        | 
        | I suspect it depends on the ingredients ... you need a
        | bread that goes well with the oil and have to be very
        | careful on not oversoaking it.
 
        | ketzo wrote:
        | Was just about to comment the same thing. Massive upgrade
        | in grilled cheese quality.
        | 
        | If you can get it, Duke's Mayo is just absolutely
        | bonkers. I also really like the Trader Joe's organic
        | mayo.
        | 
        | Also, since I'm deeply invested in grilled cheeses, more
        | recommendations:
        | 
        | I use a ratio of 1 part gruyere, 1 part sharp or extra-
        | sharp cheddar. I also really like a little parmesan or
        | pecorino, but it tastes less "classic grilled cheese," so
        | might not be for everyone.
        | 
        | Cooking method:
        | 
        | - heat pan to medium
        | 
        | - put mayo on one side of two pieces of bread
        | 
        | - put the first piece of bread into the pan, mayo side
        | down (it should sizzle lightly)
        | 
        | - heap your cheese on top of this piece, and press it
        | down onto the bread a little
        | 
        | - after 2 minutes, take the other piece of bread and put
        | it mayo side _up_ onto the top of the cheese. flip the
        | sandwich (so that the fresh mayo is now down).
        | 
        | - 2 more minutes and you're good to go. serve with tomato
        | soup (naturally) and a little ranch if you're a
        | degenerate like me.
 
        | Kluny wrote:
        | When I moved in with my partner, she came with a small
        | George Foreman grill. She used it occasionally for
        | reheating burritos, but together we found out that it
        | makes grilled cheese so quickly and easily, that grilled
        | cheese went from being an occasional treat to a weekly
        | staple. I highly recommend it over the pan option.
 
        | Turing_Machine wrote:
        | In my opinion, the Foreman grill is one of the rare
        | massively-hyped kitchen gadgets that's actually useful
        | enough to be worth the cabinet space in the long term.
 
        | satsuma wrote:
        | i should really bust mine out more. i've had one for ages
        | and used it a bunch in college then just... stopped.
 
        | _whiteCaps_ wrote:
        | Have you tried making garlic bread with mayo? Yum!
 
        | ska wrote:
        | if you are going that direction, why not garlic aoli?
 
        | panzagl wrote:
        | I'm just here to make sure no one accidentally confuses a
        | grilled cheese with a melt.
 
        | js2 wrote:
        | Behold, the field guide to the American Sandwich:
        | 
        | https://www.nytimes.com/interactive/2015/04/14/dining/fie
        | ld-...
        | 
        | If there's one food America knows how to do in many
        | variations, all delicious to varying degrees, it's the
        | sandwich.
 
        | learc83 wrote:
        | Butter or jam/jelly.
 
        | samwillis wrote:
        | Maybe not what you put on the toast but where you put it.
        | What about a Toast Sandwich, a slice of toast between two
        | slices of bread...
        | 
        | https://en.m.wikipedia.org/wiki/Toast_sandwich
 
    | sockpuppet69 wrote:
 
  | time_to_smile wrote:
  | As an American I've been shocked how they've basically
  | disappeared. Hot water bottles used to be a staple of American
  | household. While they are easy to find on Amazon, they don't
  | seem to be as ubiquitous as they once were.
 
  | hotpotamus wrote:
  | I've never put much thought into this but my mother who spent
  | some of her teenage years in the UK in the 70's used to use a
  | hot water bottle. Here in the US, we had a mid-century ideal of
  | "energy too cheap to meter" that would have been provided by
  | the burgeoning nuclear industry. It never really panned out,
  | but a lot of houses had things like radiant heaters in floors
  | and room wrapping baseboard heaters installed for comfort which
  | is nicer than having to deal with a fluid filled bladder, but
  | obviously much more costly.
 
  | soperj wrote:
  | I didn't think you were supposed to put boiling water in a hot
  | water bottle? at least the rubber ones...
 
    | [deleted]
 
    | blacksmith_tb wrote:
    | I do see that there are silicone ones available, those should
    | take boiling water in stride (though you'd need to wrap them
    | in a thicker cover to avoid boiling yourself...)
 
    | thrwy_ywrht wrote:
    | Every hot water bottle tells you not to use boiling water in
    | it, but at the same time everyone I know who regularly uses
    | hot water bottles uses boiling water from an electric kettle.
 
    | jimnotgym wrote:
    | ...but everyone does. I just let it go off the boil and then
    | use it.
 
  | vanderZwan wrote:
  | > _Maybe it 's because I am British_
  | 
  | Nah, they're also not uncommon in the Netherlands, where I'm
  | from, and Germany, where my partner's from (don't know if I'd
  | call them "common" though).
  | 
  | What I found truly surprising is that they're impossible to
  | find in Sweden, where we live. You'd think that hot water
  | bottles would become more common the further up north you go.
 
  | tsupiroti wrote:
  | Hot water bottles are quite common in Portugal. You should be
  | able to find one at any large supermarket (e.g. Continente).
 
    | juanuicich wrote:
    | I can confirm Continente stocks them in all branches I've
    | been to, but only at the beginning of winter. By late January
    | they're hard to find already.
 
| JoeAltmaier wrote:
| Scouts used to heat a rock in the fire, put it in a bag and take
| it to their tent.
 
  | downrightmike wrote:
  | not too hot, nor wet rocks, those explode
 
| danans wrote:
| Who remembers waterbeds from the 1980s? Basically a big water
| bottle (some had heaters too). I assume they were uncomfortable
| as heck to sleep on, but as a kid they were sure fun to play on
| until you got reprimanded.
 
  | aidenn0 wrote:
  | The ones with internal baffles to prevent sea-sickness are
  | still generally liked by people who try them. However, they are
  | extremely heavy and if they leak are a potential source of
  | significant damage (many apartment and condo complexes have a
  | "no water bed" policy for this reason).
  | 
  | I'm not sure, but I think that most (if not all) of them had
  | heaters because water can pull an awful lot of heat from your
  | body over the course of 8 hours even if it's quite warm (if
  | it's under 95F or so, you can cool off quite fast by sleeping
  | on a bare waterbed mattress; a bare waterbed mattress under 80F
  | can put you at risk of hypothermia).
  | 
  | That being said, the mattresses had insulating covers so it's
  | possible there were some where heaters were not needed.
 
  | mikecoles wrote:
  | I bought one in the late 1990s. I needed a bed and found
  | waterbed mattresses were cheap, actually they were all the same
  | cost from single to CA king. I ordered the king size because
  | why not and went to building the frame while waiting for the
  | mattress arrival. I only had 1' left around two sides of the
  | bed in my bedroom after setting it up, but it was the most
  | comfortable sleep. I think the "waveless" feature was a big
  | benefit. It did take a few days to get used. I now sleep on a
  | high end pillow top bed. It's nice, but is second to the
  | waterbed.
 
  | kwhitefoot wrote:
  | I've only tied a water bed once; it was very comfortable.
  | 
  | It had damping inside so it didn't slosh around all that much.
 
  | Tagbert wrote:
  | They were very comfortable in many cases. The water container
  | conformed to your body and provided very evenly distributed
  | pressure. Having a heated bed was very nice in the winter. You
  | usually had an extra pad on top to reduce contact with the
  | vinyl container. It was hard to sleep with someone else though
  | as their movements tended to cause you to bounce around. Later
  | versions had baffles that reduced the motion of the ocean.
  | 
  | They were very heavy. I had to get rid of mine when the
  | downstairs neighbor could no longer open her door due to
  | warping of the doorframe in a very old house.
 
| ExtraE wrote:
| Dang, can you merge this with the other link to the same article
| that's also on the front page?
 
| mcv wrote:
| When I was a kid, I remember my grandmother used metal hot water
| bottles with a crocheted cover. My wife has recently started
| taking a cola bottle with hot water (not boiling, or the plastic
| will melt) to bed. Perhaps I should give her one of these fancy
| rubber ones.
 
  | LeanderK wrote:
  | here in germany you can buy the rubber ones with cloth over it.
  | They are way more comfy and don't get super hot. Regardless of
  | the temperature in my room, my girlfriend is always cold, so
  | every night I fill it up to warm the bed
 
    | masklinn wrote:
    | > here in germany you can buy the rubber ones with cloth over
    | it.
    | 
    | There are even different thicknesses of cover, depending
    | whether you want lots of heat (thin cover so you don't get
    | that rubber feel) or more of a lower temp and slow release
    | (thicker padded cover).
 
  | arethuza wrote:
  | When I was a kid (I'm in my 50s) my parents had _ceramic_ hot
  | water bottles that had knitted covers.
 
  | downrightmike wrote:
  | as long there is water at the level the flames touch, you can
  | boil water in a plastic bottle, it will deform though.
  | https://www.youtube.com/watch?v=zzKN0n0WB6Q
 
| sneak wrote:
| The only reason this is a thing is because of our habit of
| building cheap buildings that aren't insulated well.
| 
| In modern times it is more than possible to build well-insulated
| buildings that can be heated affordably to reasonable indoor
| temperatures everywhere in the living space.
| 
| Almost nobody does this.
 
| baud147258 wrote:
| Since there's a few people here using hot water bottles and I
| didn't found the information in the article, how long does a hot
| water bottle stays hot? (starting from hot tape water or boiling
| water from a kettle)
 
  | jkubicek wrote:
  | I have a hot water bottle that I use occasionally in the winter
  | months. Filled with boiling water it'll be too warm to handle
  | for about 45 minutes, then comfy for hours. Tucked under the
  | comforter it's frequently still a little warm in the morning.
 
  | qwertox wrote:
  | If you use it to warm your feet by putting it on the floor and
  | having socks on, resting your feet on it but changing position
  | because of the heat, around one hour, a bit more.
  | 
  | If you use it to have something warm in your bed, if you leave
  | it below the blanket it will still be warm in the morning. But
  | putting it with boiling water in the bed means that you just
  | can't touch it because it's really hot. You may put your feet
  | on it for 10 to 20 seconds or put it on your stomach for the
  | same amount of time, to heat up quick, but then you need to
  | place it somewhere where it has no direct contact with you.
  | 
  | I just love mine, which is one made of flexible rubber (or
  | pvc). When I get up I start making my coffee and in parallel I
  | heat up a kettle of water until it boils, then i use that one
  | under the desktop for my feet. Sometimes I put it on my lap or
  | hug it for a while. It's worth it, but only during the winter.
 
___________________________________________________________________
(page generated 2022-01-21 23:00 UTC)