DIY Solar Water Heaters! – All Easy DiY’s! (Copper/Pex/CPVC/Poly Tube) July 4, 2022 Geraldine DIY Solar Power Systems DIY Solar Water My 7 DIY Solar Water Heaters! I’ve built several types including… Copper Coil Units, Copper Pipe Units, PEX Tubing Units, C-PVC Pipe Units and Poly Tubing Units. all are easy DIY projects! Credit DIY Solar Please support our Sponsors here :