During the winter months, the last thing you would wish for is a faulty furnace and, worse still, one blowing cold air. However, if you encounter such an issue, you don’t need to panic. Some of the most common causes of this problem are simple to fix even without technical know-how. The list below highlights three common reasons why your furnace might be blowing cold air.
1. The Pilot Light Is Off
Most older versions of furnaces have a pilot light. This small light runs continuously and is responsible for lighting the furnace burners. Check to see that this light is on. If it’s off, light it, and that should fix the cold air problem. If switching the pilot light doesn’t fix the issue, or the light goes off again, you may need to have a specialist look into it.
2. Thermostat Settings
When the furnace is blowing cold air, the first place you need to check is the thermostat’s settings. When set to “on,” the unit fans will keep blowing even when the furnace is not heating the air. Ensure that the thermostat is set to “auto,” so the unit’s fan will run only if the furnace is heating the air.
3. Clogged Filters
Clogged air filters usually restrict the flow of heated air from the furnace and into your house. As a result, your furnace will have to overwork to heat your home adequately, causing it to overheat and consequently turn off the burners. When that happens, the fans will keep blowing while no air is being heated, which will blow cold air into your living space. To avoid that, you need to check and change your air filters regularly.
If your furnace is malfunctioning and you’re not sure what to do, don’t panic. Brian's Heating & Cooling, Inc. is here to solve all the heating and cooling problems in your home. You can also reach out to us for other specialized services like air quality assessment, home energy audits, duct cleaning, duct sealing, climate control products, mini-split services and ventilation services. If you reside in Madera, CA, and you have a faulty furnace, feel free to contact us. We’ll offer you a solution that will restore your home’s comfort.