Throughout the sizzling-hot summer months in Mountain City, GA, your air conditioning system will turn on and cycle countless times. While it’s running, your HVAC system shouldn’t make much noise. You should hear a click when the thermostat triggers the start of a cooling cycle, followed by the whirring of the outdoor fan and the air handler’s indoor fan. If you start to hear loud, unusual, or excessive noises, here are some of the reasons why and some tips on what you should do.

Clogged Air Filter

A clogged air filter is a common problem in air handlers. The filter traps dust, hair, and other debris. After a few weeks of nearly constant use during the peak of the summertime, the filter will fill up with particles. An obstructed filter may cause the air handler’s fan to work harder. As it tries to push air through the clogged filter, it may generate more noise. Check and replace the air filter monthly.

Loose or Broken Parts

As the air handler’s motor and fan age, they may lose lubrication. This could lead to more noise during each cooling cycle. If you suddenly start hearing a banging or clanking sound, a part may have come loose or broken. This situation requires professional HVAC repairs.

Dirty Evaporator Coil

The air handler can also be affected by the air conditioner’s evaporator coil. According to the Department of Energy, inadequate maintenance may cause debris to build up on the coil. Dirty coils are prone to freezing. The debris buildup can also impact the fan. The fan may squeal, whine and screech due to the excess wear and tear. Ice buildup disrupts the air current, so you may hear unusual whistling sounds as the air passes over it. Be sure to schedule an annual springtime tune-up of your air conditioning system.

To learn more about air handler noise, take a look at Radlee Heating and Cooling’s professional HVAC repairs, or get in touch with us today.

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