Electric Furnace Blowing Cold Air No Heat

When overheating your furnace can trip a high limit switch causing the furnace burners to shut off so that the heat exchanger does not crack.

Electric furnace blowing cold air no heat.

Is your furnace not blowing hot air. A dirty air filter blocks airflow over the furnace s heat exchanger causing it to overheat. If not the compromised air flow can cause your furnace to overheat shutting down the burner. That may be a quick and easy fix.

You might be able to tell if your ducts have a leak but fixing them is another issue. Your furnace may be blowing cold air because the filter is too dirty. The blower motor itself does not create the heat. If your furnace fan is set to on the fan runs continuously whether or not your furnace is producing heat.

If your heater is blowing cold air and it s not one of the first two possible explanations on this list then you ll need a specialist to at least come and take a look. That s why the furnace is not blowing hot air. If you have a gas furnace that hasn t been cleaned in a long time a faulty valve could be the reason for the cold air blowing out of your furnace. Have you changed your air filter lately.

Rather it blows the heated air created by the furnace through the system s ductwork. This is another reason to have your system checked regularly. After ruling out all of the simple problems above the most likely cause of a furnace not blowing air is a problem with the blower fan itself which if you remember is the fan that circulates your house s air over the heated coils. If it s dirty change it.

And because your furnace is no longer heating the air being pushed into your home will be cold. In this video i go over a common furnace problem where the blower fan blows air but th. Again using occam s razor we can assume that the next likely culprit for your heater blowing cold air is your thermostat. Check the furnace s air filter.

Start with the simple causes before moving to the more complex. A furnace blowing cold air could be due to your thermostat. Maintenance issues again here. So once a heating cycle ends and the furnace burners cut off the fan continues to blow.

Ensure that your thermostat is set higher than the temperature in your home. Or the valve could simply be worn out. Try changing the air filter and restarting the furnace. Dirty furnace filters are one of the most common causes of furnace failure.

Otherwise your electric heater or gas furnace will not turn on. Dirt and debris can collect on the valve causing it to shut down.