Originally published in the Association Energy Services Professionals’ (AESP) Energy Intel Magazine (https://pubhtml5.com/sicr/vayi), June 2022 — Air-source heat pumps (ASHPs) are an increasingly important tool in energy efficiency programs, as they can be several times more efficient than conventional systems for space heating and cooling such as furnaces, boilers, and central air conditioners. Heat pumps aren’t new; the technology has …