Call Now (540) 685-4040

Back to Blog

Air Conditioner Making Noises? Here Are Some Possible Causes

Today’s air conditioners are designed to operate quietly and efficiently. When they start making unusual noises, it’s usually the result of a lack of maintenance or a sign that a part has worn out and is about to fail. Being aware of these noises you can address the little problems before they lead to a breakdown. 

When your air conditioner is working normally it will occasionally make noises. Subtle thumping and whirring sounds are normal. By becoming familiar with the normal operating sounds that an air conditioner makes, you will be able to more easily recognize unusual sounds that could be a cause for concern.

Malfunctioning Air Conditioner Noises

Air conditioners have many parts; there are fans, hoses, belts, compressor motors, coils and other components that work together to move cool air throughout your home. As air conditioners age belt often becomes loose, leading to thumping sounds. A clogged air filter reduces airflow and can cause the unit to whine as it cycles on or off. Loose hardware on compressor parts can lead to rattling sounds. 

Preventative maintenance is the best way to minimize the likelihood of air conditioner repairs. An AC tune-up includes the following steps that keep your air conditioner operating quietly and reliably: 

  • Inspection of electrical connections
  • Replacement of dirty air filters
  • Inspection and lubrication of all moving parts
  • Inspection and replacement of worn belts and hoses
  • Ensuring that the unit cycles on and off properly
  • Inspection of refrigerant levels

If you’re concerned about noises from your central air conditioner or heat pump, Call Ostrom Electrical, Plumbing, Heating, and Air, we can help.

Special Offers
Tax Credits
Save up to $3200 when making a qualifying energy-efficient purchase. Our System Replacement Expert will help you determine what qualifies for a tax credit.
Learn More
We Offer Flexible Financing with Synchrony Service Financial Company, LLC!
Learn More
Our Members Save More
15% discount (up to $300) on Service Work Performed, Reduced HVAC Diagnostic Fee, Annual Electrical & Plumbing System Inspection, & Biannual Heating & Cooling System Inspection
Learn More
Over 20 years of Experience Installing Whole-Home Generators
Learn More
Water Heaters
Install a High-Efficiency Water Heater and You May Be Eligible for Up To $2400 in Tax Credits & Rebates
Learn More
Free Second Opinion
On New HVAC, Electrical, and Water Heater Systems
  • Dollar Badge Financing
    Options Available
  • Contact Us

    Contact Us Today

    Trusted by
    2022 Best of Roanoke award
    BBB A+ accredited business
    Lead-safe certified firm by EPA
    nexstar network logo