Why Is My Furnace Not Working? Common Issues & What to Do
There’s nothing worse than coming home on a chilly day and realizing your furnace isn’t working. Whether it’s blowing cold air or not turning on at all, it’s important to know what’s going wrong—and how to fix it. In this article, we’ll walk you through the most common furnace problems, simple troubleshooting tips, and when to call a professional HVAC technician.
1. Thermostat Issues
Before anything else, check your thermostat. Sometimes the issue is as simple as incorrect settings or dead batteries. Make sure: The thermostat is set to “heat” mode The temperature is set higher than the current room temperature The batteries are fresh (if it’s battery-powered)
2. Dirty or Clogged Air Filter
A clogged air filter restricts airflow, causing the furnace to overheat and shut down as a safety measure. Replace or clean your furnace filter regularly—ideally every 1- 3 months.
3. Pilot Light or Ignition Problems
If you have an older furnace, a blown-out pilot light might be the issue. For newer units, ignition problems (like a faulty ignitor) are common. If you’re not comfortable checking this yourself, it’s best to call a licensed technician
4. Tripped Circuit Breaker or Blown Fuse
Your furnace needs electricity to run. If it suddenly stops working, check your breaker panel to see if a circuit has tripped. Reset it if needed and monitor if the problem happens again.
5. Blocked Vents or Duct Issues
If some rooms are warm and others are freezing, you might have blocked vents, dirty ducts, or airflow restrictions. Make sure your vents are open and unblocked by furniture or curtains.
6. Blower Motor Malfunction
The blower motor is responsible for distributing warm air throughout your home. If you hear strange noises or no air is coming out, the motor might need repair or replacement.
7. Gas Supply Problems
If your furnace runs on gas and won’t ignite, the issue could be a disrupted gas supply. Check if other gas appliances are working. If none are, contact your utility provider immediately.
8. Furnace Is Too Old
Most furnaces last around 15–20 years. If your unit is aging and frequently breaking down, it may be time to consider a furnace replacement for improved reliability and energy efficiency.
When to Call a Professional HVAC Technician
If your furnace still isn’t working after these basic checks, it’s best to call in a professional. At Belcarra Mechanical, we offer fast, reliable furnace repair services in Burnaby, Coquitlam, Port Coquitlam, and nearby areas. Our certified technicians are trained to handle all major brands, including: American Standard, Lennox, Ducane, Carrier, Daikin, Goodman, Amana, Armstrong, Napoleon, York, Trane, Ruud, Bryant, Rheem, Bosch, Tosot, Keeprite, Concord, Aire-Flo, Continental
Get a Free Quote Today
Don’t let the cold take over your home. Contact us today to schedule a furnace repair or maintenance service. Belcarra Mechanical is here to keep your home safe and warm.
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