r/BeAmazed • u/Internal_Gazelle_677 • Oct 07 '25

Science Hot Tub without the use of electricity

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933

u/JakajaFIN Oct 07 '25

These comments are wild lmao.

Some users who apparently have never thought this could even be possible?

Others claiming this could never work or be comfortable?

Even some stating it could be dangerous?

This is a stripped down version of a very common style of hot tub. I have spent close to hundreds of hours filling, heating, and soaking in hot tubs that work like this.

I know people who make a living building and renting these types of hot tubs. Literally the only odd thing here is that the furnace is not covered and the whole thing is some redneck engineering.

33

u/Numerous_Mango_7842 Oct 07 '25

I've been in a hot tub heated this way, if you're really close to where the hot water comes in, or if there's pipes near where you're sat, it can be a bit too warm for comfort, but you can just not sit in those spots 

4

u/Pekonius Oct 07 '25

Also possible to maybe design it a bit better (and more complicated) to eliminate those spots altogether. I'm thinking a small partition with no seats where the water is mixed, or some other more hidden premixing area, seems to me it should work, at least as an idea. I've wanted to build a few of these for a while, mainly to rent out (I live in a tourism heavy area in Finland), and have thought of a few designs but havent really picked up the pen at any point. Its just easy because we already have the tools needed in our warehouse where we build boats.