Yet another great post from the folks at Build It Solar: a simple and low tech solar heating system called a thermosyphon collector mounted in the wall of a garage. It uses the same principle as the solar dehydrator we have on our garage roof–basically it’s just some clear plastic and a heat collector made out of black window screen. If your climate is cold and sunny (think Colorado) this would work nicely.
Read the post to see a review of its performance over the past nine years here.
I thought that this was a Faces in Places post as it went past in my rss reader.
I’m dying to try the same technique for water heating as I’ll be moving to a more remote location soon.