It’s normal for heat pumps to make a low humming sound when they’re on and running. However, you should be concerned if your unit is making loud, unfamiliar noises. You should contact a professional if you believe something is wrong with your heat pump, especially strange noises.
Learn what causes the various noises heat pumps make from a trusted HVAC contractor.
Turn off the unit immediately if you begin hearing a metallic banging or clanging noise. Check the fan if you hear this sound, as it could be coming from the blades hitting something inside the unit. There could be ice, debris or a loose component inside the unit.
Screw compressors usually make a squealing or screeching noise. You should contact an HVAC repair expert to get your unit checked if the noise began recently and you haven’t made any changes to your system. The compressor may be putting excessive pressure on the refrigerant, a problem that will increase your heat pump’s operating temperature while preventing the unit from heating and cooling properly.
A buzzing sound coming from your heat pump could be the reversing valve in winter. You may still hear this noise even when the unit is off because its valve’s solenoid coil always runs at low power. This noise could be due to a minor issue like a loose screw; however, there’s also a chance you’re facing serious problems like compressor failure, ice in your unit, motor malfunction, a refrigerant leak, or power issues.
There could be a loose component in your heat pump if it’s making rattling sounds. The screws on the unit’s cover may need tightening, or the piping for the refrigerant could be in the wrong position. Your ductwork could also have leaks, gaps or debris.
Get in touch with heating repair professionals if you’re hearing noises such as these noises coming from your unit. For quality heating and cooling services, you can count on Complete Comfort Plumbing Heating & Air. Call us at 949-426-7377 or fill out our contact form to request an appointment.