Cansolair Solar Panels – FREE Heating without the Pollution

Cansolair Inc. has developed a forced convection solar heating unit called the Model RA 240 SOLAR MAX. A dwelling of 1000 square feet can have a complete air change in 1.5 hours. Working experience indicates that comfortable room temperature can be maintained in a 1000 square foot dwelling with 15 minutes of sunlight per hour.

don’t want to spend $2,700? you can buy this kit and do-it-yourself for $370.
or follow these instructions to build one from scrap. might want to include a temperature controlled switch or two, tho.