Which Uses Less Energy? AC Fan On or in Auto?

During the hot weather, running your air conditioning can be your largest monthly electrical charge. So, it’s given that you’re seeking ways to use less energy. That may include finding an energy-efficient AC setting or even making the switch to an ENERGY STAR®-rated model through air conditioner installation.

Switching your air conditioning’s fan setting is a second way you can spend less money.

Your air conditioner works with a fan to distribute the cool air it makes. You manage this fan at your thermostat by changing it to “auto,” which signifies the fan will only run when the air conditioner is cooling. Or you can adjust it to “on,” which indicates it will operate all the time.

Does putting your AC on “fan” save energy in St. Louis? Not necessarily. Usually, operating your air conditioner’s fan constantly is going to increase your energy bill slightly.

But it also offers a few pluses (and downsides) in regard to your home’s comfort. Here’s why.

Air Conditioner Fan Set to “On”

Having your air conditioner’s fan run all the time can better balance your home’s comfort. This is ideal if you have a two-story home, since areas upstairs can be more hot. It’s also great if you have issues with inconsistent cooling on account of hot and cold areas.

It’s also beneficial if one of your loved ones has been diagnosed with allergies, asthma or other respiratory illnesses. That’s since the air is continuously being distributed and filtrated. On the other hand, you may have to switch your air filters more regularly.

Having the fan on all day can also make your energy bills more expensive. It could also cause the fan to wear out more quickly and need air conditioning repair.

Your residence may also appear muggier. Air conditioning helps control humidity by drawing water from the air. But if the fan is always running, it’s harder for moisture to drip from the condenser outside.

Air Conditioner Fan Set to “Auto”

This is the highest energy-efficient setting, since the fan will only run when your air conditioner does. It’s great if your house always appears cool, no matter what spot you’re in.

There are a few downsides to using the auto setting. You might experience hot and cold spots in your residence and lower air quality. This is since air isn’t continuously flowing or being constantly filtered.

That said, you’ll need a lower amount of energy and won’t need to switch you air filter as often. Both are savings that can build up over the year, so you’ll have to think about what’s best for your home.

If you’re experiencing home comfort problems during hot weather, Morgner Inc. Air Conditioning & Heating can support you. We install a large range of energy-efficient air conditioners that can keep your residence comfier while also helping you save more on cooling costs. Many can be partnered with the latest smart home technology, giving you the ability to monitor and adjust temperature settings while away.

To discover more about how we can make your home more comfortable, contact us at 314-262-4541 right away.

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