Drill and Fill: Installers thread pipe into a hole a few inches wide and over 100 feet deep. As wind and solar hog the alt-energy spotlight, this technology has remained underground. "You're not ...

While geothermal heat pumps may initially seem complicated to service or troubleshoot for some technicians, with the right training, they will find that these systems are similar to conventional ...

Illustration by Sarah Cheney. Imagine a home in which the temperature is always comfortable, yet the heating and cooling system is out of sight. That system performs efficiently but doesn’t require ...

As you watch your energy bills skyrocket, you might find yourself wondering if there's a better option to heat and cool your house than your forced-air HVAC unit. Depending on your circumstances, a ...