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What to Do if Furnace Stops Working in Winter

Published by Luke Weiden

A malfunctioning furnace during winter is a nightmare. Your heating system faces a lot of stress in harsh weather, working nonstop to keep you and your loved ones safe and warm. Read this guide if your furnace breaks or starts blowing cold air with ways to fix it!

Check the Thermostat

The first thing to inspect is your thermostat. Set the desired temperature in your home and ensure it functions correctly. Sometimes, simply adjusting the thermostat can kickstart your furnace back to life.

Inspect the Power Source

Verify that your furnace receives power. Check the circuit breaker to ensure it didn’t trip. If it has, reset it while monitoring the furnace to see if it blows warm air again.

Examine the Pilot Light

Working pilot lights are crucial. If it’s out, relight it according to your furnace’s manual. If the pilot light continues to go out, it might indicate a more significant issue requiring more comprehensive heating repair.

Replace the Air Filter

A clogged air filter can impede airflow, leading to furnace malfunctions. Regularly replace or clean your filter to maintain optimal performance. Dirty filters cause heating issues and affect indoor air quality.

Check the Gas Supply

Ensure there are no issues with the gas supply to your furnace. If you suspect a gas leak, turn off the supply immediately and contact a professional to fix the problem.

Gas valves inside a home furnace.


Call for Professional Help

Lastly, call the experts if the above steps don’t resolve the issue. Attempting advanced repairs without the necessary knowledge may worsen the problem. They can quickly diagnose and address problems, saving you time and money.

For professional furnace repair services, contact Deljo Heating and Cooling. We’re available 24 hours a day, seven days a week for emergency service. Our HVAC technicians will identify, fix, and maintain your furnace for optimal, energy-efficient performance all season.