Several years ago, I was on vacation in the Black Hills of South Dakota with my wife Kathy and two of our grandchildren. We had just passed the heads of the presidents on Mount Rushmore when a small ...

This is a 2017 test site installation performed in a wood frame house (including garage, workshop and upstairs apartment) located in Carlisle, MA. The system has been in operation for the past two ...

In a December 2014 Plumbing & Mechanical Hydronics Workshop column, we discussed the benefits of dual-fuel systems that combine a geothermal water-to-water heat pump with a mod/con boiler. The boiler ...

The popularity of geothermal heat pumps continues to grow. These days, you can read about them in just about every issue of every HVAC trade publication. They offer a way to provide low-cost heating ...