It’s normal for heat pumps to produce a humming or purring sound while in operation. However, if this sound turns into something more concerning such as a grinding, buzzing, banging or rattling noise, you might want to have a professional check if there’s a problem.
AAA Air Conditioning, Inc., a top-rated heating and air conditioning repair company, lists some common types of heat pump noises and what they could possibly mean.
Rattling or Vibrating Noises
There can be various reasons for vibrating noises coming from a heat pump. Fortunately, some of these are easy to fix. For instance, to help absorb the vibrations and reduce the noise, you can place rubber pads under the heat pump. You should also check the piping for the refrigerant and see if it’s strapped too tightly. For rattling sounds, which may be caused by cover panel screws that have become loose, simply tighten them if needed.
Loud Metal Sounds
If you hear a noise like that of metal hitting metal, turn off your heat pump immediately and check the fan. The fan blades may be hitting a foreign object that’s made its way inside the unit. Make sure to deal with this issue before any damage occurs. Otherwise, you may need to call a professional for heating repair.
Noise During Startup or Shutdown
Some heat pumps may make strange sounds when they start up or shut down. The key is to know what is and isn’t normal for your unit. If you’re hearing the typical noise it makes during startup or shutdown, there’s really nothing to worry about. But once you notice something that you haven’t heard before, it’s best to investigate.
Buzzing or Grinding Sounds
Buzzing sounds often come from internal components like contactors and coils. In some cases, this kind of noise is due to a problem with the compressor or fan motor. Call a professional to confirm the issue.
AAA Air Conditioning, Inc. has decades of experience in the HVAC industry. Our technicians work both as heating repairmen and commercial HVAC specialists. To learn more about our services, call us at (361) 578-3846 or fill out our contact form.