AC compressor making weird sounds after servicing
Using coil spray and water to clean an outdoor unit can leave the compressor making strange buzzing sounds, particularly when temperatures climb above 85 degrees. This leaves homeowners anxious and unsure whether the post-maintenance noise is something they should actually worry about.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Turning off the unit
- 2Calling an HVAC technician
- 3Checking if the condenser coil is dirty
- 4Comparing the sound to other units heard in the neighborhood
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
Where this came up
People with this problem also raised
- 20Why does my car run terribly and stutter after a long drive?
- 5Why is my car suspension popping after replacing struts and springs?
- 3Is it safe to drive with a noisy AC compressor pulley?
- 2Loud howling and whistling noise from vents after replacing blower motor
- 3Manual transmission still making noise after fluid top off
- 16Grinding noise after installing new brake pads and rotors