• AC makes buzzing sound

    Aug.23.2010

    My air conditioning unit started making this buzzing noise around the contactor and the capacitor. The motor turns, but after about 30 minutes it stops and the buzzing starts. Should I replace the capacitor? It's 100 degrees down here and it seems like the unit is overheating.

    John, Stafford, TX

     Often a buzzing sound indicates a problem in the contactor. The issue may be with the contactor itself, or it could be the result of a low voltage problem elsewhere. A service technician would need to isolate the issue. I suggest you contact the ARS/Rescue Rooter branch in Houston, TX at (713/281/832) 777-7777 to help identify the source of the buzzing noise.

Comments

POST A COMMENT