man inspecting furnace

Troubleshooting When Your Furnace Won’t Blow Hot Air

January 23, 2019

There’s nothing better than coming home after a long day at work and snuggling up on the couch. Whether you have a fireplace or central heat and air, a warm and cozy home is the perfect haven from the outside world. What happens, though, if you come home to a cold house? Do you know how to troubleshoot the furnace if it isn’t blowing warm air? Most times, it’s best to leave the troubleshooting in the hands of a professional. Keep reading to learn how a professional can troubleshoot furnace issues in your Brookville, Indiana, home.

Check the Air Filter

It’s generally best to change the filter once a month. A dirty filter makes it difficult for the furnace to push air into the ductwork. This will increase your heating expenses. It can also worsen your allergy symptoms. The dirtier the filter is, the more dust and dirt the furnace will blow into your home.

The Thermostat Settings Are Wrong

If the thermostat is set to "ON," this means the fan will constantly run. When the furnace isn’t heating your home, the fan will blow cold or cool air. The best setting to leave it on is "auto." Not only will this ensure that the furnace only blows hot air, but it will also save on energy expenses. A smart thermostat can save money, too.

The Pilot Light Is Out

Another important component to check is the pilot light. If the pilot light isn’t lit, the furnace can’t produce hot air. Something as simple as relighting the pilot light may fix your problem. If you light it and it won’t stay lit, this means there is something wrong with the thermocouple. A professional HVAC specialist will be needed to fix this problem. If it won’t light at all, the problem could be that the gas valve switch isn’t on the "on" position.

Western Hills Heating & Air Conditioning specializes in furnace repairs. Call us today at 812-227-3001.

Image provided by Shutterstock

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