Is your furnace blowing cold air? If so, you’ll want to find and eliminate the problem as quickly as possible to get back to warm comfort. Patterson Heating & Air Conditioning has identified six of the most common causes of a furnace blowing cold air.

Pilot light blown out

Some gas furnaces use pilot lights, and these can sometimes get blown out. This can cause the furnace to blow cold air. You can relight the pilot light yourself, but if you’re unsure how to do it, it’s best to call a professional HVAC technician.

Ductwork leaks in Charlotte

Small cracks and holes in the ductwork can affect your comfort as well. These leaks allow cold air from the attic and crawlspace to enter the ducts and flow through the vents. If you have damaged or leaking ductwork, call Patterson Heating & Air Conditioning.

Clogged HVAC air filter

Dirty air filters reduce airflow, and this can make your furnace overheat. Make sure to change or clean your air filter at least once a month during winter in Charlotte.

Dirty oil filter

If your furnace uses oil, it also has an oil filter that prevents dirt and debris from affecting the HVAC system. Unlike a typical air filter, oil filters require a little more elbow grease to clean. Fortunately, Patterson has you covered.

Thermostat set to ON

Avoid using the ON setting on your thermostat. ON tells the furnace fan to blow continuously, even when no heat is being generated. When the thermostat is set to ON, you’ll notice cold air coming from the vents. Set your thermostat to AUTO this winter.

Undersized furnace blowing cold air

Finally, your furnace may just be unable to effectively heat your entire home. No matter how efficient it is, an undersized furnace won’t be able to deliver warm air to the whole house. Patterson Heating & Air Conditioning can assess your heating system to determine whether you need a larger unit.

For all your heating needs this winter in Charlotte, call Patterson Heating & Air Conditioning or click here!