Heather McDiarmid, Ph.D.

Windows can be both the best part and the worst part of a home. 

Heat pumps have been around for a long time. I mean a really long time. The first heat pump was reportedly built in 1856 to dry salt in salt marshes. Today’s heat pumps, however, are far more useful. In fact, they are one of the most important technologies we have for slashing greenhouse gas emissions from buildings.