This book offers a technique for building homes that heat and cool themselves in a wide range of different climates, using ordinary building materials available anywhere and with methods familiar to all building contractors and many do-it-yourselfers. A formerly patented design for author James Kachadorian"s Solar Slab heat exchanger is now available for the use of anyone motivated by the desire to build a house that needs a backup furnace or air conditioner rarely if ever. This is a building book for the next century. Applicable to a diversity of regions, climates, budgets, and styles of architecture, Kachadorian"s techniques translate the essentials of timeless solar design (siting a home in harmony with nature, using windows as solar collectors, achieving year-round comfort by balancing good insulation with healthy supplies of fresh air) into practical wisdom for today"s new generation of solar builders.