www.greenpowerscience.com This video show how a Fresnel Lens can be used to generate heat in water for a pool. It also illustrates the inability to heat water only. and the need for a dark target. The heat sink used in this video falls short of being a true dark object but the green color looked cool.

I am doing solar panels so I can have electric for the entire house. I would like to convert the gas heater for my pool to an electrical heater. But they don’t have it for residential. Will the heat pump work well here in Southern California?