The cause of most heating system failures are thermostat malfunctions. Other things that can cause your furnace to not produce heat include a tripped circuit breaker, a blown fuse, or a pilot light that has gone out. If you are unable to diagnose the cause of your furnace issues, an experienced Aire-Flo technician would be happy to make a service call. Contact us today.

Dirty air filters are a common cause of many furnace problems. The build up of dust and dirt restricts airflow and if the filter gets too clogged, the heat exchanger can overheat and shut off, causing your house to not warm up enough. You’ll be able to tell if a dirty filter is the cause of your heating issues if the blower is running but no warm air is coming out. If replacing your filter doesn’t fix the issue, contact a professional HVAC expert.

When your thermostat is set to AUTO, your furnace fan should only blow when the system is in a heating cycle. It’s not normal for your furnace blower fan to constantly run, regardless of whether your furnace is heating. A shorted wire in the system may be the cause of your issues.