Why Your Furnace Could be Blowing Cold Air Published on October 21, 2016 You notice your heating system start up and you’re expecting a comfy blast of warm air, but instead all you feel is cool air blowing. That’s no good in freezing temperatures! There are a couple reasons why your furnace could be blowing cold air. Service Experts Heating & Air Conditioning is here with some of them to help you detect the culprit. Thermostat It could sound silly, but the thermostat is the first thing you want to look at. It’s the starting place for any furnace technician, too. Verify the system is set to “auto as opposed to “on.” If the thermostat is set to “on” then your HVAC system will blow continuously, even when it isn’t heating the air coming out, thus putting off cold air. Turning it to “auto” will make sure the heating system only blows when it’s really heating the air to keep your home warm and comfortable. Air Filter The majority of air filters need to be changed every month to prevent them from becoming dirty and clogged. If air filters aren’t replaced often enough, the soiled air filter may impede airflow into your heating equipment. If this happens, it can overheat your system, causing the furnace to stop heating as a safeguard. Duct Work If your duct work includes leaks, connection issues, or was designed incorrectly, it could let warm air from the furnace to seep out. This would not only cause your heating system to blow cold air, it could actually run up your utility bills since your furnace is heating non-living space, and will have to work more to keep your home comfortable. There are many other reasons that your furnace could produce cold air. Call Service Experts Heating & Air Conditioning today and we’ll send a professional to diagnose your problem and get your home warm and comfy again in no time. If you have not turned on your heating system yet but don’t want to get left in the cold, call about our fall promotion and find out how you can save money on a Precision tune-up.