I am trying to figure out why my central air unit makes humming/vibrating sound when it's on. The strange thing is that when I open the door to where the HVAC unit is located, the sound completely stops. When it's closed, the sounds return (I had my wife tell me whether there was noise or not as I opened and closed the door). Right on point, opened door equaled no noise and closed equaled noise returning.
What is causing this issue? At first, I thought it was the filter (correct size, I confirmed), but it's not.
Any advice would be greatly appreciated!
What is causing this issue? At first, I thought it was the filter (correct size, I confirmed), but it's not.
Any advice would be greatly appreciated!
Hvac humming/vibrating sound
