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Why Is My Furnace Running Without Heat?

Have you ever experienced turning on your furnace only to find out that it's running but not producing any heat? This can be a frustrating problem, especially during the colder months.

Fortunately, there are several reasons why this might be happening to your heating system, and some of them can be easily fixed—we’ll get into them below.

Dirty Air Filters

Dirty air filters are one of the most common reasons why your furnace is not producing heat. When air filters become clogged with dirt and debris, they restrict airflow, which can cause your furnace to overheat and shut off the burners. To prevent this from happening, make sure to replace your air filters regularly.

Malfunctioning Thermostat

If your thermostat is not functioning correctly, it can cause your furnace to run without producing heat. This can happen if the thermostat is not calibrated correctly or if it's not receiving power. Try replacing the batteries or calling an HVAC technician to help you diagnose the issue.

Ignition Problems

If your furnace is not igniting, it will not produce heat. This can be caused by a faulty ignition system, a dirty pilot light, or a gas supply issue. Make sure to call a professional to inspect your furnace and diagnose the problem.

Faulty Flame Sensor

The flame sensor is responsible for detecting whether the burners are lit or not. If it's not working correctly, your furnace may not produce heat. This is a common problem that can be fixed by cleaning or replacing the sensor.

Blocked Vents

Blocked vents can restrict airflow, which can cause your furnace to overheat and shut off the burners. Make sure to check your vents regularly and clear any debris or obstructions.

Contact an Expert for Help

By understanding the common causes behind a furnace not producing heat, you can take the necessary steps to prevent it from happening. If you're experiencing problems with your furnace, don't hesitate to call a professional HVAC technician for help.

At Meyer's Companies, Inc., we offer a range of furnace repair services to help you stay warm and comfortable all winter long.

Contact us today to schedule an appointment.