solar air heater

The green trust has a great article about building your solar air heater the right way from the ground up. It has great info about sizing your solar air heater and how to store your solar energy.

For more solar heater info

http://www.green-trust.org/2000/solar/solair.htm

I was visiting builditsolar.com and I noticed a plan for a solar barn door and asked myself why it couldn't be modified to a residential application. A door integrated solar air heater would be easy to install and wouldn't require expensive holes made into the exterior of home.