A heat pump often makes a soft and continuous humming sound when in operation. This is normal for the most part, but there may be times when the noise may seem louder than usual. When this happens, it may indicate internal damage and, therefore, shouldn’t be ignored. If you hear any of the sounds listed below, be sure to call in a trusted heating and air conditioning repair technician to check it out.

Grinding Noise

Grinding or metal-on-metal noises are hardly a good sign for your heat pump. This sound usually means an issue with your heat pump’s motor. They’re usually the result of a lack of routine heat pump maintenance that keeps the system clean and lubricated. Some components will need lubrication when they get grubby and make loud grinding noises. We recommend switching off your system and getting it checked to avoid more damage.

Loud Noises

If your heat pump makes loud noises in cold weather, it could be running in defrost mode. In this case, you might also hear a whooshing noise as your system works to melt the frost off its coils. This can build up due to the low temperature and humidity levels. This mode is entirely normal for your unit, but if it’s icing up frequently or frozen solid, it might need to be checked by a professional HVAC technician. Depending on what they find, the fix may be as simple as replacing the air filter or as serious as needing extra refrigerant.

Clicking Noises

Normally, your heat pump clicks once it turns on. But there could be an issue with the pump’s capacitor if your heat pump is making a clicking noise throughout the entire length of its heating or cooling cycle. The capacitor is meant to turn on the motor without any noise, so you need to get it checked as soon as possible. It shouldn’t be ignored as it can affect overall performance, leading to further damage and costly repairs.

When you hear any of these noises coming out of your heat pump, don’t delay — get in touch with the team at AC & Refrigeration Works. We provide high-quality HVAC and  indoor air quality services to homeowners in McAllen, TX, and the surrounding communities. Call (956) 255-7227 or fill out our online request form for more information.