Also on these boards
❧ A fast and relatively inexpensive solar heat box that attaches to the outside of a windowsill to harness the heating from the sun. Visit the website for more information.
Woodstove Heat Exchanger/ How to build your own
This could be the cleanest and most sustainable way to heat a conventional home. Some people have reported that they heat their home with nothing more than the dead branches that fall off the trees in their yard. And they burn so clean, that a lot of sneaky people are using them illegally, in cities, without detection.