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Solar heating hack for an Intex SPA hot tub.

rin67630

Solar Enthusiast
Joined
Apr 29, 2020
Messages
1,066
Location
Nort-Rhine-Westphlia Germany
Here is an easy heck to add solar heating to an Intex SPA.
It does not need any pump, but just derives a part of the filter water stream into a loop of electrical corrugated conduit that runs through a greenhouse box.
(n.b. the photographs are old ones of the first version using an irrigation hose)
Solar heating hack
Enjoy!
 
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