If your furnace blows warm air, then blows cold air, and then stops blowing air completely, this could be the result of an overheated furnace. Furnaces have a safety control that will shut the burners off, however, the furnace fan will remain on to cool the furnace down to a safe level. Overheating furnaces can be caused by a dirty filter blocking the airflow, causing the furnace to run longer to heat your home until it overheats. It is important to replace your filter immediately, as constant overheating could cause damage to your furnace's heat exchanger.
2. Check The Thermostat
Are you setting your thermostat, but your home isn't staying warm? If your furnace is constantly running, but blowing cold air, you may have your thermostat on the wrong setting. Double check to make sure the thermostat is set to "auto" instead of "on." If the thermostat is set to on, the furnace fan will constantly run, even if the furnace isn't heating the air. When the thermostat is switched to auto, the furnace will only blow warm air.
If the furnace is blowing cold air, the pilot light may be out. Check out these three solutions:
1. Relight the pilot light. If it stays on, you're in the clear!
2. If the pilot light won't relight, ensure that gas is flowing into the furnace. Make sure that the gas valve is turned on. If it is, check to see if the pilot light is clean. If it is dirty, clean it to allow gas to come through.
3. If the pilot light comes on, but won't stay on, there may be an issue with the thermocouple. Royal Heating & Air can identify the issue and get it up and running again.
Don't Be Left In The Cold This Winter!
If your furnace is not blowing warm air, don't worry! Royal Heating & Air can check your furnace for any issues and get it resolved. If you have your HVAC unit maintained by Royal Heating & Air, a professional technician can identify any potential issues early, before they become a bigger problem. If you need service done on your system, contact Royal Heating & Air today at 573-480-4313.
Visit our website: www.RoyalHeatandAir.com