Federal incentives for heat pump installations expire this year. Homeowners can choose between air-source and ground-source systems. Heat pumps cut energy use and emissions more efficiently than ...

Ground-source heat pumps, which tap into the stable temperatures found hundreds of feet beneath the Earth’s surface, are a super-efficient way to heat and cool homes. They’re also quite expensive to ...

With a little guidance on ground-source heat pump design temperatures and a few rules of thumb for ground loop flow rates, most engineers are pretty comfortable designing the building side of a ground ...

When ASHRAE’s original book on ground source heat pumps was published 17 years ago, such systems were used mainly in residential settings and, according to the association, the designers who used them ...

Researchers at the Technical University of Munich in Germany have evaluated the environmental, economic, and eco-efficiency performance of 13 different heating systems for a typical German two-story ...