Incredibly detailed information on how to make any type of solar air heater. It covers all of the rules of thumb, the materials, where to get them and much more. Whether you?re a homeowner or a contractor, this book has everything that you need to know about the construction and operation of all types of solar air heaters for space and domestic water heating. If you?re looking for one book that will get you into ?hot air,? this is the one!