Electric air-source heat pumps (ASHPs/heat pumps) are an increasingly popular mode of delivering heating and cooling to buildings. Heat pumps are typically much more energy-efficient than older technologies such as hydronic boilers or resistance heating. They give users a great deal of control over their indoor comfort with zoned heating and cooling and have none of the health and safety concerns of combustion sources such as heating oil, propane and natural gas.
In the distance, there is a soft humming of a compressor, the ticking of its meter, and the whirring of the fan. The warm blanket of air envelopes the room. The small metallic grating in the wall glints with polished cleanliness. The faint scent, the very aroma, of money saved in your wallet perfumes the room.