Why is my air conditioner making a humming noise?

May 31, 2019

If your air conditioner is humming, it could mean there is an electrical or mechanical problem. Take steps now to determine the issue with your air conditioner.

 

Probable causes of your cooling system’s hum could include:

  • The condenser fan motor on the unit could be unable to spin but still have power reaching it, creating resistance that produces a pronounced, and often loud, humming sound.
  • There could be a mechanical or electrical malfunction with the contractor relay switch, which is responsible for turning on the outside unit when the indoor temperature rises to the level where cooling is needed. When the contractor fails, it can cause a humming sound.
 
A humming sound is a signal that something inside your air conditioner is off and needs examination. Contact the experts to inspect your system and identify the problem.
Contact Us

Our Health and Safety Commitment
At Service Experts, our top priority is always the health and safety of our customers and team. We are following all COVID-19 (Coronavirus) public safety guidelines and adjusting our business practices as needed to ensure customer and employee wellbeing. As a precautionary measure, anyone working on behalf of Service Experts – including our technicians – is being asked to stay home for the recommended 14 day quarantine period if they are returning from out-of-country, have been exposed to a presumptive or confirmed case, or are feeling unwell. We are providing our technicians and other field employees with additional health and safety guidance to assist in keeping our customers and employees safe. Please be prepared to answer brief health and safety questions with our representative. We will continue to monitor the situation and will adjust our business practices as required. We recognize that this may be a particularly stressful time and want you to know that, we are committed to serving you and making your experience as easy as possible.