If your furnace is blowing cold air, it could be a rather simple issue or it could be a problem that requires your St. Paul furnace repair service. There are reasons that your furnace is blowing cold air that are not cause for alarm. Here are a few scenarios that might be the cause of your problem.
Cold Air at Start-Up– It is normal for your furnace to blow cold air when you first start it up. When the fan engages, it blows the cold air from your ducts first, then heated air will follow.
Fan is On– Check your thermostat control, if it is in the fan on position, just the fan is running and not the furnace. Switch to the heat setting and see if that resolves the issue.
Pilot Light– One of the first things you want to check if your furnace is blowing cold air is the pilot light. If the pilot light is out, follow the instructions to relight it. If that doesn’t work or you do not wish to relight it yourself, then give us a call.
Flame Sensor– If your flame sensor is dirty, you will experience cold air from your furnace. You will want to give us a call to have the sensor properly cleaned.
Thermostat Problem– The reason your furnace is blowing cold air might not have anything to do with your actual furnace, it could be a problem with your thermostat.
If you have checked the items you can and still have a problem, then feel free to give us a call and we can help.