Buzz, Hum, Clank: A/C Noises And What They Mean

Buzz, Hum, Clank: A/C Noises And What They MeanIs your air conditioner trying to tell you there is a problem? Before the warm San Diego weather puts your home cooling system to the test it is time to give a listen to the A/C noises it is producing. If you hear a buzz, a hiss, a rattle or an out and out scream that could be a warning sign that major trouble is on the horizon.

  • Buzzing. A buzzing sound coming from your outside condenser unit is a likely clue that there is an electrical problem with the unit. Poor electric connections can produce the buzzing or it could be a sign of a failing motor.
  • Hissing. If you can hear a hissing sound coming from the unit that is a likely indicator that refrigerant is leaking from the system. This problem is something which can be easily detected with routine maintenance to the system.
  • Rattling. If the A/C noises you are hearing are more like a rattle or a bang, the problem could be with the motor mount. The rattling could signal that a bolt has broken or come loose. Banging can also signal a problem with the compressor kicking in
  • Screaming. The worst noise that you can hear when you turn on your A/C unit is a scream which is most likely a signal that the compressor has seized up and won’t run at all. If this happens turn off the unit immediately and call a professional.

The A/C noises that are coming from your system could be an indicator of a major problem or something that could require just a minor adjustment to your system. If you are not sure what is causing the strange sound coming from your air conditioner you can trust the professionals at Sherlock Heating & Air Conditioning, Inc. to solve the mystery. The company has an A+ BBB rating and is committed to providing outstanding, prompt and quality service across the San Diego region.

Our goal is to help educate our customers in the greater San Diego and San Marcos, California area about energy and home comfort issues (specific to HVAC systems).

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