by Mark Hansberger on February 5, 2019January 25, 2019 Heat Pump Troubleshooting: Making Loud Noises Heat pumps cool by removing heat absorbed by refrigerant in the home and exhausting it outdoors; they heat by absorbing heat outdoors in refrigerant and then carrying it indoors. Heat pumps work especially well in […]Read More Filed Under: Heat Pumps Tagged With: heat pump– heat pump noises– hvac system– service and maintenance