Medium Urgency
HVAC Making Strange Noises
Grinding, squealing, rattling, or banging sounds coming from your HVAC system. Some noises are normal on startup, but persistent or loud sounds indicate a problem.
What Could Be Wrong
01
Loose or worn blower motor bearings
02
Debris in the outdoor unit (leaves, twigs)
03
Failing compressor (humming or buzzing)
04
Ductwork rattling from loose connections
Typical Repairs & Costs
Blower motor repair or replacement
$300 – $700
estimated range
Outdoor unit cleaning and inspection
$89 – $200
estimated range
Ductwork sealing or repair
$200 – $600
estimated range
Costs vary by ZIP code. Check your local pricing →
DIY or Call a Pro?
🔩 Call a Pro
This should be handled by a licensed HVAC technician. Attempting DIY could void warranties or create safety hazards.
Related Symptoms
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