Problem Center · Any System
Why Is My HVAC System Making Strange Noises?
Buzzing, rattling, squealing, banging or grinding.
What could cause this?
- Motor bearings or blower wheels
- Loose panels or components
- Electrical components buzzing or failing
- Delayed ignition
- Duct expansion or airflow noise
What you can safely check
- Note when and where the noise happens
- Record a short video with sound
Don't open electrical panels or equipment cabinets, handle refrigerant, work on gas or combustion components, or bypass safety controls.
When it requires a professional
Grinding, loud banging, burning smells or electrical buzzing — turn the system off and request service.
How Air Mechanical diagnoses it
We identify the source and whether it signals a developing failure.
Every diagnosis starts with the system as it actually exists — equipment, controls, wiring and installation. The equipment has a brand. The problem has a solution.