Why Does My Furnace Turn On But No Heat Comes Out?

Why Does My Furnace Turn On But No Heat Comes Out?

With only a few weeks until Spring officially begins, you might be thinking that this is an odd time to be concerned about your heater breaking down. If you’re like the majority of people, you’ll have to crank up the temperature a few more times before we can formally say goodbye to the cold.

That’s why, even at this time of year, a heater that blows out cold air can be a significant issue if you’ve turned on the heat only to be greeted by a brisk breeze inside your house. So to ensure this does not happen to you, it is better to get your heating unit inspected by a professional HVAC contractor.

Reasons your Furnace is not Blowing any Air

Here are some possible reasons your heating unit is not blowing out air.

Sometimes it’s not your furnace’s mistake that your furnace is sending an Arctic chill rather than the heat you want. It is a possibility that the problem got induced by the thermostat. Focus your initial troubleshooting efforts here, as you have the best chance of resolving the issue without involving a professional.

  • Issues with Air Filters 

Dirty air filters are another reason that could be causing your cold air problems. There’s one more “simple” remedy after you’ve inspected the batteries and done thermostat adjustment is clean or alter the filters in your heating system.

A clogged filter is dirty and old, and it can constrain airflow to your HVAC system. As a result, your furnace’s capacity to make and disseminate warm air throughout your home may be; hampered.

  • Problems with the High-Low Switch

A clogged filter can even affect components of your HVAC system to fail if left unattended. Your system can withstand a few cycles of overheating, but not indefinitely. Also, overheating your high push-button can cause it to fail as your HVAC system’s “brain” will believe the heater is overheating.

It will turn on the blower to cool everything down to solve the problem. However, all you see from your side is the furnace blower operating nonstop and blasting cold air, and you have no idea why.

The coolant is another part of your HVAC system that needs to be maintained regularly. When your HVAC system is running in hot weather, the condensing unit regularly drips water into a drip pan. That water gets removed through pipework that eventually leads around the outside of your home. Those lines have a predisposition to become clogged with dirt and grime, especially if you don’t maintain them regularly.

Additionally, your float switch will trip if they become clogged, causing your system to shut down. The accumulation of grime peaks at the end of the summer, just in time for your heater to succumb to the repercussions and begin blowing cold air.

Are you looking for a professional HVAC company to solve your heater-related problems? Get in touch with our experts at Air Doctorx Heating & Air Conditioning. To know more about our expert heating and cooling services, call us at 302-492-1333.