My Heil furnace blowing cold air
This is what you need to do if your Heil Furnace is freezing air.
I’m not an expert in furnaces operation, but I know that the furnace gets very hot to provide heat for your home. During this process, it will also vent some cold air outside, making it seem as if the furnace is blowing cold air.
The first thing you should do is check your filter and replace or clean it. This filter can become clogged with dirt and dust over time, affecting how effectively the furnace can heat your home and vent out the cold air.
If the filter is not a problem, then you might have a problem with the thermostat or switch that regulates the temperature in your home.
What may seem like a minor issue can be a major problem. It might be time for a service call if you’re too cold or the furnace is blowing cold air.
You can identify the problem with your furnace by following some guidelines.
Step 1. Check weather and thermostat settings:
If you have set the thermostat below 55 degrees Fahrenheit, your unit will not work as efficiently. Although this is not a common symptom, if you notice that it has been on for a day without any heating, check to ensure that the thermostat is set to the correct temperature. If not, turn it up to see if there is any difference in airflow.
If you cannot find any problems with your thermostat or energy efficiency settings and think the furnace may need repair, call an HVAC specialist for assistance.