Using A Hot Water Bottle To Stay Warm

[Vanhalo]

Do you call them My Preciousessss? LOL

Sometimes.

I also yell at the cold air......"You....... SHALL NOT PASS!!!!!!"

[Stlouisbilly]

Awesome tip...I can't believe I never thought of it..rei nalgene w tube sock is warm still in the morning...can't believe the thick Nalgene bottles retain heat so well

[Just joe]

This is interesting and I will have to try it this weekend


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[OneClick]

Still loving this trick. This past weekend I woke up around 5am to wet some bark. After standing in -1° half naked for 20 seconds, I needed a quick boost of heat. I had my MSR reactor, so re-warming my 32oz Nalgene literally took 20 seconds. I poured that back into the bottle, into the neoprene sleeve, and it was back to sleep for me.

I wasn't cold at all on top, but I could tell I was starting to push my 0° UQ at this temp (legs started getting cool towards daybreak). I'm pretty sure this hot water bottle made all the difference.

[curlymaple42]

So you just toss it between thy legs to warm the femoral arteries then? We might have to try this...

[OneClick]

So you just toss it between thy legs to warm the femoral arteries then? We might have to try this...

I like to keep it by my feet, at least to start and warm them up. After I fall asleep it usually works its way down but at that point I'm fine no matter where it is. Just be sure to cover bottle with something for a nice slow-release of heat.

[Hochram]

I generally carry stainless steel bottles. Is there any reason I shouldn't use one of them for this trick?

[TxAggie]

I wasn’t quite sure if this, especially when many have said it tend to cool off right about the time the coldest part of the morning comes in.

Well, I tried it a few weeks ago on a Hang where the thermometer was calling to drop just below 0*F. I was sure my 0* Incubator would be fine, but it would push my 0* TQ.
I had already made a double layer insulator from reflectix for a 1.5L Nalgene, and I noticed some heat still radiated when wrapped.
So I boiled some water, filled the Nalgene to about 3/4 full, packed on the reflectix, and crawled into my hammock at about 7:30 pm.

2:30: I’m HOT and have to vent my TQ a little, outside air temp around 5*.

6:30: still very warm in my hammock, and the water was still warm enough to make oatmeal if I wanted, instead I threw it over my stove and had hot water in a matter of less than a minute.

So now I’m sold on both a reflectix jacket for Nalgene bottles (in tests I did on my deck, room temp water stayed liquid for over 18 hours outside in sub 20* temps, and for a hammock warmer.

Great tip, that doesn’t add any weight.


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[cougarmeat]

Hochram - remember, this isn't a Thermos. We WANT the heat to ooze out. So if you had hot water one side of the stainless steel and unprotected flesh on the other - there could be some burning. Now if you put the bottle in some sleeve - like a felt bag/sock (or actual sock), that barrier would soften the steel/heat directly against skin. So I'm guessing your Stainless would work as long as it is not a thermos and if you put in a softer sleeve.

[curlymaple42]

Used this technique at the NEHHA winter hang and it worked great! Had instructions from folks there and good thing because you NEED to fill hot water RIGHT up to the top of the bottle!!! If you don't, when the water cools it creates a vacuum and the cover is close to impossible to remove without warming the bottle back up. Just ask Laticia! Lol!!

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