5 HVAC System Sounds You Don’t Want to Hear

Most of the time, your heating and cooling system operates quietly. You might hear one click when it turns on or off. The motor and fan of the air blower make humming sounds during a heating or cooling cycle. A malfunction or problem with a part in your heating or cooling system could cause it to make unusual sounds. Be aware of these five sounds that signal problems with your heating and cooling system.

1. Squealing

Squealing sounds from your heating or cooling system are often related to a loose or worn belt. Squealing could also come from a loss of lubrication of the fan. A belt replacement is an affordable repair. During a maintenance visit, our technicians at Barker's Heating & Cooling will lubricate all of the system’s moving parts. If it’s been a while since your system had a tuneup, schedule one.

2. Rattling

Rattling sounds could either be from something that came loose inside of the unit or some debris that is caught in the system’s housing. If the rattling sound is coming from your air vents, they could be loose or have a piece of debris in them. Any rattling sounds need to be checked out by one of our service technicians.

3. Thumping

Thumping sounds are usually related to something coming into contact with the blower blades. Any type of object contacting the blower’s blades puts stress on the blower’s motor. The motor could overheat or prematurely fail. Check for sticks or animal debris on the outside unit’s housing. If you see something stuck on the blower, have a pro remove it.

4. Buzzing

Buzzing sounds could be caused by a wide variety of problems with a heating or cooling system. Something could be loose, worn or dirty. There may be a refrigerant leak or a loss of lubrication.

5. Repeated Clicking

Repeated clicking suggests an electrical problem with the heating or cooling system. This must be checked out by a professional.

Contact us at Barker's Heating & Cooling in College Station if you hear any of these noises coming from your heating or cooling system.