What is an ASHP and how does it work?
An air source heat pump (ASHP) is an energy-efficient alternative to a furnace and air conditioner, even in colder climates and in those with moderate cooling needs. It is an attractive option because it is capable of providing efficient cooling, along with heating in the spring and fall, with a single piece of equipment. ASHPs use electricity to transfer energy between indoor and outdoor air. Because they move heat, these systems typically consume less electricity than electric-resistance heating systems. In the cooling mode, the heat pump functions like an air conditioner, moving heat from inside to outside the home. In the heating mode, the refrigerant flow is reversed to extract low-temperature heat from outdoors and deliver concentrated high-temperature heat to the home.