Outdoor pools are great on hot summer days — the kids are occupied and the water is refreshing. And as the summer progresses, the water heats up to a comfortable level. But on chilly spring and fall days the cool water in that pool amounts to nothing more than a 30,000 gallon decoration in your back yard. Plus you still may need to run the electric pool pumps to keep the water clean.
via Renewable Energy News – RenewableEnergyWorld.com http://ift.tt/1plmDYu