HVAC Fan Continuously Running | Homesense Heating Cooling

 HVAC Fan Continuously Running | Homesense Heating Cooling

By: Brian Schutt  |  April 21, 2021

“Should I set my HVAC fan to auto or on” is a question we commonly receive from Homesense customers — along with “does running the fan on my air conditioner use a lot of electricity?” It’s a debated topic throughout the industry, so we’re going to give you the pros, the cons, and our recommendation.

Setting Your HVAC Fan to “ON”

When you set your fan to “ON,” you’re telling it to keep running 24 hours a day, 7 days a week, regardless of the heating or cooling setting. There are a few positives to this feature.

Pros to Running Fan on Air Conditioner Continuously:

  1. Keeping the fan on creates a more even distribution of heating and cooling, circulating the air if you have cold or hot spots in your house, like a bedroom above a garage.
  2. Less frequent starts and stops of the fan can reduce the stress from startup, and potentially help extend it’s lifespan.
  3. Leaving the fan on 24/7 ensures cleaner air, as the air is pulled through the filtration or UV light system. This can be better for people with allergies.

While keeping your fan on 24/7 may be more energy efficient, there are a few downsides to leaving your fan on all of the time:

Cons to Keeping Fan Continuously Running:

  1. It could cost you hundreds of dollars a year. The average unit has a 500 watt fan, which uses almost as much energy over the course of the year as a refrigerator, resulting in a $50/month bill.
  2. During the summer…

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