Why Does My Ductless AC System Operate So Loudly?

If the ductless air conditioner in your Chatsworth, GA, home sounds more like a rock concert than gentle white noise, you definitely have an issue that demands your immediate attention. Several reasons can cause a ductless AC system to operate loudly. Consider these common culprits and get your quiet comfort back:

Dirty Air Filters

Just as a clogged air filter can restrict airflow in a central AC system, it can cause problems in your ductless mini-split. A dirty filter makes the ductless AC system work harder and leads to increased noise from the fan.

Clean or replace your air filters every 30 to 90 days. This can significantly reduce noise and improve ductless air conditioning efficiency.

Debris Buildup

Dust and other debris can build up around the indoor and outdoor units of your ductless AC system. This buildup can obstruct airflow and cause the mini-split system to work harder and operate loudly.

Regularly vacuum the intake and outlet grilles to the indoor units. Clean the condenser coils in the outdoor units with a soft brush to remove debris. Avoid using a garden hose, as the strong water pressure can damage the delicate fins.

Loose Parts

Over time, vibrations can cause some parts inside your ductless AC system to loosen. Loose screws or other components can rattle or bang during operation, creating unwanted noise.

If you suspect loose parts might be the culprit, consult a professional HVAC service technician for inspection and repair services. Don’t attempt to fix the system yourself, as tampering with internal components can void your warranty.

Refrigerant Issues

Low refrigerant levels can also cause a ductless air conditioner to operate loudly. Refrigerant is the coolant that absorbs heat indoors and releases it outdoors. When there’s not enough refrigerant, the mini-split system must work harder to cool your space, which causes increased noise from the compressor.

If you suspect low refrigerant, call our service technicians. They can safely check the refrigerant level and recharge the ductless AC system if necessary.

If you’ve tried these troubleshooting steps, but your ductless air conditioner is still loud, it’s time to call for help. Contact Dalton Heating & Air for AC repair services today.

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