Why is My Furnace or AC Making Noise?

Woman Checking an Air Conditioner

If you hear any unusual noise coming from your HVAC unit, please turn it off and call us. Do not attempt any kind of repair without consulting an HVAC certified technician first. Call Four Seasons Heating & Cooling at 252-247-5500 or contact us online if you hear any of the following noises:


This can indicate that you need a new motor bearing or have a bad belt. Belts are a relatively cheap fix and often your motor just needs lubricating. This can be done at home or by a professional. Call our office at 252-247-5500 or contact us online for more information.

Rattling/Thumping/Banging/Clanking from the Inside

Usually this means a problem with the blower or the motor. This can indicate that a part inside your furnace or air conditioner has come loose. If the noise is louder than a rattling and more like a banging noise, you probably have a part that has broken or disconnected completely. At this point, turn your unit off and call our office.


If you hear a scraping noise, turn your unit off. This can indicate a dangerous situation. This sound usually means that something has broken completely and is moving around the inside of your unit.


If your unit is working the way it should, than this is probably just the transformer running loudly. If your unit isn’t working properly, this might be the motor fan or capacitor.

Get expert assistance on all of your HVAC service needs. Four Seasons offers residents of Beaufort and surrounding North Carolina areas experienced and professional service on your furnace, AC, heat pump, and more. Call us at 252-247-5500 or request service online for assistance.

Need HVAC Service?

Contact the experts at Four Seasons Heating & Cooling.

Call us at 252-247-5500!