This is one of the most common myths you’re likely to hear about air source heat pumps.
Today’s heat pumps are no longer the big, bulky and noisy pieces of equipment they were when they first came onto the market. Modern heat pumps are compact, energy efficient and make about as much noise as your refrigerator.
The noise you hear is from the pump’s fan pulling air into the system – if yours is installed correctly by a certified installer, you shouldn’t be able to hear the sound indoors.