man listening to furnace noises

Reasons Why Your Furnace Is Running Constantly in Opelika, AL

October 25, 2022

The furnace is a piece of must-have equipment when living in Opelika, AL. Whereas the furnace is a life-saver during winter, it becomes problematic if it fails to shut down. In this post, we’ll review common scenarios that make your furnace run continuously and the issues that result.

Dirty Air Filters

The air filters help to trap contaminants and particulates from your indoor air. Consequently, they become filthy, restricting airflow within your HVAC system. As a result, the heat exchanger overheats, signaling the furnace to activate the “cooling mode,” making the fan run unceasingly.

The best solution is to change your air filters at least once every 90 days. However, if you have pets or are a heavy smoker, you should check them every 30 days and change them as needed.

Your Fan Switch Is Set On

The fan switch has three settings, “ON,” “OFF,” and “AUTO.” When the setting is manually set to ON, your fan will run continuously, regardless of your home’s temperature.

You can change that by locating the switch at the upper right corner of your furnace cover. Then, change the settings from “ON” to “AUTO” to allow fan operations only when necessary. If this diagnosis doesn’t help, it’s time to contact your HVAC expert.

The Temperature Setting Is Too High

Check your temperature settings when you have the correct fan settings and a clean air filter. High-temperature settings can cause your furnace to run continuously, particularly when you have cold weather outside.

Faulty Motor

An obstruction, break or fault in your fan can make your furnace operate for longer to attain set temperatures. You can easily detect this issue if you hear unusual noises from your furnace.

Thermostat Problems

A malfunctioning thermostat relays the wrong signals making the furnace operate continuously. Contact us for a professional inspection and proper diagnosis of your thermostat.

To restore your furnace’s optimal functioning, contact Indoor Solutions, professionals in air conditioning, heating and maintenance of residential and commercial HVAC systems. We also provide ductless and indoor air quality services.

Image provided by iStock

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