Why Is My Furnace Fan Always Running?


If you hear your furnace fan running all day everyday, it doesn't necessarily mean there is something wrong. Here are some reasons why:

Why It's Always Running Your furnace fan will continuously run usually due to your thermostat's setting which have two fan settings: "Auto" and "On". The auto setting will turn on the fan when heated air needs to be circulated. The On setting will keep your fan running non-stop.

A continuously running fan may also be due to a faulty fan limit switch or one that is set to manual override. For any technical problems, it's always best to call an HVAC professional.

Why Not to Worry Running the furnace fan all the time won't break it. It's actually designed to run continuously. It provides better air circulation throughout your entire home, which is good for larger houses. It eliminates cold spots and may be crucial for people with allergies or asthma.

Slight Drawback You'll be using more energy if you run the furnace fan continuously, meaning higher energy bills.

Be proactive with your home's furnace care and schedule regular maintenance with us! Call 72 Degrees Comfort Company at 515-965-7272 or email us at office@72degrees.com.


#furnacefan #furnacetips #72degrees

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