5 HVAC System Sounds You Don’t Want to Hear

June 7, 2019

Any heating and air conditioning unit makes noise. However, some sounds are more welcome than others. The following are five noises that no home or business owner wants to hear.

1. Rattling

Rattling noises can be due to a number of things. The ball bearings on the motor may be going bad, or a component may have come loose. Out-of-balance parts are more likely to create a clanking noise. If a part is disconnected entirely, it will make a banging noise, at which point one should turn the HVAC unit off immediately and call a technician.

2. Grinding

If you hear the sound of metal grinding on metal, it could be from the pistons of the compressor. A compressor replacement can be expensive, so at Mario’s Air Conditioning and Heating, we’ll be honest and tell you if that or a system replacement will be the more cost-effective route in the long run. In some cases, though, a grinding noise may simply be the result of a bad blower fan belt.

3. Squealing

Hudson residents should know that a squealing noise may signify a bad indoor blower motor or bad outdoor fan motor. In either case, they do not want to be left with a broken AC during the summer. Less severe problems may be behind the noise; for example, the blower motor unit may not be lubricated.

4. Persistent Hissing

Short periods of hissing are normal, but over long periods, it could be a sign of a refrigerant leak. It could also mean a leak in the ductwork.

5. Continual Clicking

If the unit clicks during operation (rather than when the system turns on and off), it could point to a defect in the thermostat or the relay.

Hiring the Professionals for Repairs

For a comprehensive inspection, look no further than Mario’s Air Conditioning and Heating in Hudson. Our technicians have NATE certifications, which means they can work on HVAC units of all sizes and all makes and models. We boast over 80 years of combined experience in HVAC, indoor air quality, and duct cleaning services. Give us a call for more information.

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