An energy specialist tells what features to look for when selecting a setback thermostat. More
Early users of high-performance HVAC faced many disappointments. The latest generation of equipment works well — as long as it’s installed correctly. More
The stable temperature of the earth makes ground-coupled heat pumps a viable choice for cold climates. Here’s a look at cost-effective approaches. More
A veteran heating-system designer offers some pointers based on his experience in the field. More
Housing consultant Richard Karg takes a close look at the latest in ventilation technology: the Swedish exhaust-air heat pump. How does this system work, what are the pros and cons, and how much will it cost? More