In the winter, people spend more time indoors, staying warm and comfortable. With all this time spent inside, it becomes apparent when strange noises are emitted from your home HVAC system. Here are some common heat pump noises, what causes them, and how to fix the problem:
Identifying Heat Pump Sounds
You may find that your heat pump makes one or more of the noises listed below. Knowing what causes these noises and how to fix them, you can keep your HVAC system running efficiently all winter. Here are some heat pump noises you may notice:
Humming: A humming noise may be heard coming from your heat pump if the equipment is worn out or not making the proper electrical connection. It could also be caused by a seized fan motor. Replacement of one or more electrical components may be necessary to fix the problem.- Buzzing: If you hear a buzzing noise, this may be the result of issues with the contactors or coils of the HVAC system. This may mean the motor may fail, and help from an HVAC professional is likely needed.
- Clicking: If your heat pump is clicking, this may be a temporary noise during startup and shutdown. This heat pump sound may not be cause for alarm and a usual noise with the system operation if you hear this all the time.
Gurgling: If you hear a gurgling noise, a low refrigerant charge may be the cause. Your HVAC professional should be notified to check out the issue.- Whooshing: A whooshing sound is a common one homeowners complain of with their HVAC system. The sound often occurs when the system enters defrost mode and will go away after the frost accumulation is removed from the evaporator coils.
- Rattling: A rattling noise may be caused by the mounting feet of the outdoor unit becoming loose or the heat pump unit becoming unlevel. Correcting these issues will help to get rid of the noise.
- Grinding: If you hear a grinding noise coming from the heat pump, it may be that the blower fan belt is loose or damaged. The blower fan belt should be tightened or replaced by a professional.
- Squealing/Screeching: A high-pitched squealing or screeching often means the heat pump motor needs to be cleaned. Routine HVAC maintenance visits can help with this issue.
Vibrating: If the heat pump is making a vibrating noise, it could be a failing motor or valve, and a visit from the HVAC professional may be required.- Banging or Clanging: A banging or clanging noise with your heat pump may be caused by a loose fan blade. When this occurs, turn off the HVAC system and contact an industry professional for help.
- Hissing: A hissing noise may result from a faulty reversal valve. An HVAC professional should resolve this type of issue.
- Popping: If you hear a popping noise from your heat pump, the compressor may have taken on water, especially after a heavy rainfall. This can cause damage to the unit, so it’s essential to contact an HVAC professional for help.
- Whistling: If you hear a whistling sound from your HVAC system, it could be a dirty filter or an obstructed vent. Clearing these areas may resolve the problem.
Importance of Regular Inspections
To help prevent these issues from occurring, it’s crucial to request regular inspections of the HVAC system. During these inspections, the HVAC professional can recommend upgrading the components or a new system. Regular inspections and maintenance will help keep your HVAC system running well year-round.
Don’t wait until you have a problem to tend to your HVAC system. Make sure you obtain regular maintenance and routine inspections from an HVAC professional.
