⚠️ Furnace Noisy? (416) 424-4328 — Same-Day Diagnosis Scarborough
Furnace Making Noise? Banging, Clicking, Squealing — What Each Sound Means
Furnace Noise Diagnosis Guide
- BANG when furnace starts — Delayed ignition (gas accumulates before igniting). Urgent — can crack heat exchanger. Call immediately.
- CLICKING repeatedly but furnace does not light — Failed igniter or bad flame sensor. Professional repair needed. $150–$280.
- SQUEALING or SCREECHING — Blower motor bearings failing. Catch it early: $250–$400 repair vs $600+ motor replacement if ignored.
- RUMBLING when running — Dirty burners or blower wheel. Usually resolved at annual tune-up.
- RATTLING — Loose access panel, loose ductwork connection, or debris in blower.
- HIGH-PITCHED WHISTLE — Air leak at filter, blocked return, or oversized furnace.
Why is my furnace making a banging noise in Scarborough?
A banging noise when your furnace starts in Scarborough is usually delayed ignition: gas builds up in the combustion chamber before igniting, causing a small explosion. This is urgent – it can crack the heat exchanger and allow carbon monoxide into your home. Call Madina Mechanical immediately at (416) 424-4328.
🔗 Furnace Repair Scarborough | Emergency Furnace Repair Scarborough
