Common Furnace Problems and Their Solutions

Stay Warm All Winter by Troubleshooting Furnace Issues

As temperatures drop, a properly functioning furnace is essential for keeping your home warm. If your heating system isn’t working as it should, you might be dealing with a common furnace problem. Here’s a guide to the most frequent furnace issues and how to fix them.

1. Furnace Won’t Turn On

Solution:  Check Your Thermostat and Power Supply

Ensure your thermostat is set to “heat” mode and the temperature is higher than the current room temperature. Also, inspect your circuit breaker to see if the furnace has tripped the power.

2. Weak or No Airflow

Solution: Replace Dirty Filters

Clogged air filters can restrict airflow, making it harder for your furnace to distribute warm air. Regularly replacing or cleaning filters can improve efficiency.

3. Strange Noises Coming from Furnace

Solution:  Identify and Address the Cause

Loud banging, rattling, or squealing noises can indicate issues like loose parts, a failing blower motor, or ignition problems. A professional HVAC inspection can pinpoint the exact cause.

4. Furnace Blows Cold Air

Solution: Check Pilot Light and Gas Supply

If your furnace is blowing cold air, it could be due to an extinguished pilot light, a gas valve issue, or a malfunctioning thermostat. Relighting the pilot light or checking your gas supply may resolve the issue.

5. Furnace Cycles On and Off Frequently

Solution: Inspect the Thermostat and Air Filter

Short cycling can be caused by an improperly set thermostat or restricted airflow due to a dirty filter. Adjusting the thermostat settings and replacing the filter can help maintain consistent heating.

Keep Your Furnace Running Smoothly This Winter

Don’t let furnace problems leave you in the cold!

Located in Chattanooga, Tennessee, we’re here to keep your home warm and comfortable all season long.

If you need expert furnace repair or maintenance, call AIR SOLUTIONS HVAC at 423-304-5898 or

Request A Free Quote today.