UK-based researchers have developed a novel method to estimate the amount of defrost cycles a heat pump will experience in the winter and how much energy it would require to implement the cycles. The ...

First introduced in the 1950s, heat pump installations have increased in North America, in both residential and commercial projects. In fact, the U.S. Climate Alliance, a coalition of 25 states, ...

Heat pumps have carried a stubborn reputation as fair-weather technology, supposedly unable to keep up when temperatures plunge or when installed in drafty older homes. Federal field data and ...