Instructables: exploring - workshop - solar - heater - spa http://www.instructables.com Sat, 30 Aug 2014 07:29:56 PDT BLOX v1.01 Solar Spa Heater http://www.instructables.com/id/Overview-2/
Solar Spa Heater - More DIY How To Projects]]> http://cdn.instructables.com/FSO/D663/H19RHGMH/FSOD663H19RHGMH.SQUARE2.jpg http://cdn.instructables.com/FSO/D663/H19RHGMH/FSOD663H19RHGMH.SQUARE.jpg http://cdn.instructables.com/FSO/D663/H19RHGMH/FSOD663H19RHGMH.SMALL.jpg petastream Well it's that time of the year again here in Southern California time to fill up the spa and break out the BBQs. This has become a yearly ritual as well as a scathing reminder that electricity is not free. Any how my wife has been wanting to move in a greener direction and has been rather matter a...
By: petastream

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Sat, 21 Apr 2012 22:59:19 PDT
Cheap solar hot tub/spa/pool water heater http://www.instructables.com/id/Cheap-solar-hot-tubspapool-heater/
Cheap solar hot tub/spa/pool water heater - More DIY How To Projects]]> http://cdn.instructables.com/FMM/RN6K/GR88L98C/FMMRN6KGR88L98C.SQUARE2.jpg http://cdn.instructables.com/FMM/RN6K/GR88L98C/FMMRN6KGR88L98C.SQUARE.jpg http://cdn.instructables.com/FMM/RN6K/GR88L98C/FMMRN6KGR88L98C.SMALL.jpg tmack0 This instructable covers the solar heater I made from parts available at the local hardware store (or salvage) for cheap. I have yet to do true empirical measurements on its output/efficiency, but it will raise the temp of my hot tub (~460gal) from 70 to 80 in two sunny days, and keeps it in the 90...
By: tmack0

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Thu, 11 Aug 2011 20:12:00 PDT