If you have at least one unshaded, south-facing window, you can use a solar heat grabber to direct warm air into your home. Wouldn’t you love to heat your home with free energy from the sun? There are ...

Alas! The political campaign season came to an end right before the cold weather set in. Just when you could have used some of that free hot air generated by the candidates to warm your house, it ...

The sun’s energy can be captured by homemade solar hot-air collectors and thermosiphoning panels to provide free heat. The units direct air warmed by the sun through a window or wall opening into the ...