Strange Noises from HVAC System
Your heating or cooling system is making unusual sounds that weren't there before
Signs You Have This Problem
What Causes This Problem
What You Can Check First
Before calling for service, try these simple troubleshooting steps:
Check for loose vent covers or panels
Look for debris around outdoor unit
Note when the sound occurs (startup, running, shutdown)
Identify where the sound is coming from (indoor unit, outdoor unit, vents)
When to Call a Professional
Most HVAC noises indicate mechanical problems that need professional attention. Grinding, screeching, and banging sounds especially warrant prompt service to prevent further damage.
Strange Noises from HVAC System FAQs
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