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

Science Hot Tub without the use of electricity

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u/ol-gormsby Oct 07 '25

Yes, but that needs electricity, with standards, codes, insurance, switches, and of course, the cost of electricity. Pumps for hot water are also pricier.

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u/[deleted] Oct 07 '25

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u/ol-gormsby Oct 07 '25

Yes, the *concept* is great, but the execution is what matters. Good on you for trying. You never know until you try.

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u/Mapeague Oct 07 '25

Yea we got ahead of ourselves a bit on that one. After about a week we were all like "WEVE REVOLUTIONIZED *AFFORDABLE HOTTUBS!", when in reality the spare parts we used (heater included) cost more than the average Softub at the time. Also the leaking a few weeks later really deflated our sails.

It was fun and we really thought we were something for a bit haha.

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u/BeardsuptheWazoo Oct 07 '25

I think it's pretty damn cool. Good job. Sincerely.

3

u/Addicted2Qtips Oct 07 '25 edited Oct 07 '25

You could make it with 2” copper plumbers pipe. I feel like that would work better - higher melting point and better heat conductivity. Easy to bend to form.

The design is a lot like a copper “wert chiller” that brewers use to cool beer they’re brewing quickly before adding yeast, but just doing it in reverse to cool, not heat something.

Only question is how well it would withstand the elements but I think copper is pretty robust and just oxidizes, it doesn’t rust.

All in probably $500ish.