Do Heat Pumps Smell

The bacteria or odor collects and grows on the coil during this heating time and is released all at once when the indoor coil gets cool and damp. Heat pump owners notice the odor when the system goes into defrost, usually when the outdoor temperature dips below 40 degrees.

Why does my heat pump smell?

Heat Pump Smells Musty If your heat pump smells musty, there’s probably mold growing on wet evaporator coils or in the ductwork. This heat pump odor is often referred to as dirty sock syndrome. You can avoid this by scheduling regular heat pump maintenance and air duct cleaning.

How do I get rid of the smell in my heat pump?

This musty odor can be eliminated by cleaning the inside of your heat pump or air conditioning system wherever moisture builds up. Mold requires moisture to grow. Cleaning ductwork, evaporator coils and condensate drain pans is best done using an approved fungicide or mold-cleaning solution.