Why Is My Furnace Blowing Cold Air?
Check Your Thermostat
Be sure your thermostat is set on the correct setting. If it is set to “ON,” the blower will run constantly, even when the furnace isn’t heating any air. The air that comes through the vents will seem cool because it is room-temperature air. Turn your thermostat to “AUTO.” Now the fan will only run when the furnace is heating, and you won’t get tepid or room-temperature air.
Change the Air Filter
A dirty air filter will cause your furnace to overheat. It restricts the airflow in and out of your furnace, which can cause it to overheat. If it does overheat, the safety control will shut off the burners, causing the fan to blow cool air vs. heated air through the house.
Check the Pilot Light
Your furnace may be blowing cold air because the pilot light has gone out. It is a simple fix. Just relight the pilot. If it continues to go out after you relight it a few times, then you should call us at 469-275-9048 or request service online. This is indicative of a bigger problem requiring professional help.
Reboot Your System
If you have a modern furnace, you probably have one that is controlled by a computer. Sometimes there is simply a glitch in the system, and it needs a simple reset––the same way you would restart your computer or phone. If you turn off your furnace for 30 seconds and then turn it back on, it may reset itself and begin functioning correctly. If it doesn’t start working the way it should after you have restarted the computer, call us or request service online today.
The older your ductwork is, the more likely it is to be damaged or leaky. If you have damaged or leaky ductwork, air can be escaping before it gets to the desired living areas. Inspect the ductwork yourself, but it’s possible that you may not be able to visually detect the rips or tears causing your leak. It is best to call us or request service online for an in-depth ductwork inspection.
If none of these work, your furnace may have a bigger problem. Contact our professionals at SunDollar today to diagnose and fix any problem you might be having.
SunDollar A/C & Heat services Allen, Carrollton, Celina, Coppell, Frisco, Highland Village, Lewisville, Little Elm, McKinney, Plano, Prosper, Richardson, Savannah, The Colony and the surrounding communities with their heating and cooling needs. Visit our service area page for more coverage details, call us at 469-777-0247, or request service online today.