DIY Solar Water Heater! – Solar Thermal COPPER COIL Water Heater! – Easy DIY (Full instr.) 170F

Here is a simple to construct copper coil solar hot water heater. It is like an on-demand water heater, as there is no storage tank, but when the sun is shining, you can get hot water for cleaning. With a little ingenuity, a tank could be added.


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  1. WGP 17 February, 2017, 11:22

    Nice idea. Be sure to paint it all black and cover it with heat trapping tempered glass so it is easily cleaned and less affected by air temperature

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  2. WGP 17 February, 2017, 11:31

    Braided high pressure pop line painted black won’t break or split when frozen during cold nights and winter. Aslo a hell of a lot less expensive than copper. Consider black ABS in a larger box painted black tilted 90 degrees to the suns lowest sky path. Cover with tempered glass to trap heat and keep clean. Don’t forget a drain or other method to keep from freezing with ABS.

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  3. ZebBlanchard 18 February, 2017, 13:56

    Price out the cost of tempered glass and copper vs the amount of heater wood you will save in your outdoor hot water furnace. 🙂

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