Handy? Understand the principles of "passive convection-based air-loop systems"? Then you, too, can build a solar chimney at home to cool your house in the muggy days of summer. (it's actually neither as geeky nor as difficult as it sounds, but rather a great example of the diffusion of practical DIY green building ideas through the Net).
I am interested in eco friendly air condition.
a safe air condition that is good for the environment.