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

July 16, 2020

During the summer, operating your air conditioning can be your largest monthly utility expense. So, it’s normal that you’re checking for approaches to consume less energy. That might include using an energy-efficient AC setting or even upgrading to an ENERGY STAR®-rated unit during air conditioner installation.

Changing your air conditioning’s fan setting is another way you can spend less money.

Your air conditioner relies on a fan to distribute the chilled air it makes. You manage this fan at your thermostat by switching it to “auto,” which means the fan will only be on when the air conditioner is cooling. Or you can adjust it to “on,” which means it will run constantly.

Does putting your AC on “fan” save energy in San Jose? Not necessarily. Typically, running your air conditioner’s fan all day is going to make your energy bill slightly higher.

But it also offers a few advantages (and disadvantages) when it comes to your family’s comfort. Here’s why.

Air Conditioner Fan Set to “On”

Having your air conditioner’s fan operate all the time can better equalize your house’s comfort. This is good if you live in a two-story house, since spaces upstairs can be more hot. It’s also good if you have issues with inconsistent cooling because of hot and cold spots.

It’s also advantageous if one of your family members deals with allergies, asthma or other respiratory problems. That’s because the air is constantly being dispersed and purified. However, you may have to change your air filters more often.

Having the fan on constantly can also increase your energy bills. It could also result in the fan wearing out prematurely and need air conditioning repair.

Your house may also feel more humid. Air conditioning helps balance humidity by clearing water from the air. But if the fan is always on, it’s harder for moisture to flow from the condenser outdoors.

Air Conditioner Fan Set to “Auto”

This is the best energy-efficient setting, since the fan will only operate when your air conditioner does. It’s good if your home always appears comfortable, regardless of which area you’re in.

There are a few downsides to using the auto setting. You could run into hot and cold areas in your house and reduced air quality. This is due to the fact air isn’t continuously being distributed or being constantly purified.

That said, you’ll consume reduced energy and won’t need to get a new air filter as regularly. Both are savings that can tally up during the year, so you’ll have to consider what’s ideal for your household.

If you’re running into home comfort issues during the summer, American HVAC Inc can help. We sell a wide range of energy-efficient air conditioners that can keep your house more pleasant while also helping you save more on electricity expenses. Many also work with the latest smart home technology, giving you the ability to monitor and adjust temperature settings while on the go.

To find out more about how we can make your family more comfortable, contact us at 408-215-1018 now.