Installing New Filter In Furnace

Why Doesn’t My Furnace Turn Off in Woodbine, GA?

January 23, 2024

A furnace cycle should be approximately 10 to 15 minutes unless it’s a particularly cold day in Woodbine, GA, which doesn’t occur often. If your furnace runs without stopping, you know something is probably wrong. Here are some possible reasons your home’s furnace won’t turn off:

Clogged Filter

The recommendation is that you change your filter about every two to three months to help sustain efficiency. A maintenance service technician can inspect it during tuneup appointments as well.

Replacing your filter is an important step because clogged filters reduce airflow. That means a longer run time for your furnace and perhaps a higher monthly bill since the system will use more energy to do its job.

Bad Limit Switch

Another possibility is that the limit switch has failed. This is the component that tells your furnace to shut down once it reaches the set point. If signals aren’t sent or they’re sent incorrectly, your furnace won’t know when to end its cycles.

Uncalibrated Thermostat

The limit switch can’t do its job without accurate input from the thermostat. Over time, the thermostat’s sensors lose their calibration. Your thermostat may not be sending the signal because it incorrectly senses the indoor temperature as being lower than the actual measurement.

Fan in “On” Mode

Lastly, it may be a simple matter of the fan being in “on” mode, in which case it’ll run even when the furnace has stopped heating. Switch the fan to either “off” or “auto,” as this lets it run only while the furnace is in operation.

Besides flexible scheduling, we offer 24/7 availability to respond to emergencies. We guarantee your 100% satisfaction with the work of our NATE-certified service technicians. Ed’s Comfort Solutions can send a service technician to your home in Woodbine, GA, to perform the necessary repairs, so call today if your furnace refuses to turn off.

Image provided by iStock

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