You rely on your furnace to keep you and your family comfortable all season long, so if your system starts blowing cold air, it needs to be addressed immediately. The problem may require anything from a simple fix to professional service from a heating contractor, so you’ll need to do some troubleshooting. Use the guide below to check for a few of the most common reasons behind this issue.

Why Is Your Furnace Blowing Cold Air?

1. Thermostat Problems

Because the thermostat is responsible for controlling the temperature, this is one of the most common culprits behind a system blowing cold air. First, check that the temperature is set high enough and the fan switch is set to ”on,” rather than “off” or “auto.” If this looks good, try replacing the batteries, since dying batteries can impact function.

Finally, check the temperature around the thermostat — if it’s warmer than the rest of the house, you’ll want to move the thermostat to a location that better reflects the home’s temperature.

2. Tripped Breakers

If the breaker for your thermostat or heating unit was tripped, then your system may not turn on at all or may blow cold air. Check the appropriate electrical panel and reset any tripped breakers. If the breaker keeps tripping, it’s indicative of a more serious problem, so you should schedule an inspection with a heating contractor before trying to use your system.

If you need help with your furnace, turn to the experienced heating contractors at Concord Heating & Air Conditioning. They've been installing, maintaining, and repairing HVAC systems for residents throughout Concord, NC, and the surrounding area since 1977. Their licensed, bonded, and insured team is committed to customer satisfaction, whether you’re getting a heating installation or an emergency HVAC repair. If you can’t figure out the source of your furnace’s malfunction, contact them online or call (704) 786-6608 to schedule an appointment with a heating contractor today.