Why is my Furnace Blowing Cold Air?

Don’t wait for freezing temperatures to roll through Colorado to check if your furnace is operating smoothly. If you notice your furnace blasting cold air, start troubleshooting now. To determine if the issue is something you can fix yourself or if it’s time to get your furnace serviced, here’s a quick checklist to determine the problem.

Check your Filter

A clogged air filter blocks airflow through your furnace, raising the temperature inside of it. This blockage can cause your furnace to overheat and the furnace burner to shut off. If the furnace needs to be replaced, insert a new filter that matches the size of your unit. Position it in the right direction according to your filter frame. This should always be done at least twice per winter.

Check your Thermostat

Your thermostat tells your furnace what temperature to reach. So, if your thermostat isn’t working accurately, it can’t communicate the right instructions to your furnace. Make sure your thermostat is receiving power and has the correct settings. If everything looks good and your furnace is still blowing cold air, you may need to call an HVAC technician.

Look for Leaking Ducts

It may be time to check for leaking ducks if you have a furnace blowing cold air when the heat is on. Leaks in your furnace ducts cause heat energy to escape, so when the heated air reaches your living areas, it becomes cold. You will need to call an HVAC technician to assess and repair this problem.

Check your Pilot Light

If you have an older furnace that’s blowing cold air, your pilot light may have gone out. If you feel comfortable taking steps to relight your pilot light, you may be able to fix this one on your own. Also check the color of your pilot light. If it is discolored, call an HVAC technician as soon as possible.

Whether you need to know how to troubleshoot your furnace, you would like a tune-up before the season or you need a furnace repair, CT Heating & Air in Aurora is here to help. We service furnaces throughout the Denver Metro Area. Call us or contact us online to get started!