I have watched an ABC News Report on Tampa Bay 10 on August 1st 2007 about a pool heater that utilizes hot attic air to heat swimming pools. As it utilized the hot attic air it helped cool down the guys home saving him lots of money. You can go tho Tampa Bay 10 website and type in Attic Heats Pool and it will upload for you to watch. I find this amazing and wonder how many other alternative technologies are we missing out on due to the lack of knowledge. I recommend anyone with a alternative energy product that is not well known to share it with us.