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

July 16, 2020

During the high temperatures, running your air conditioning can be your largest monthly electricity cost. So, it’s given that you’re looking for ways to save. That might entail using an energy-efficient AC setting or even making the switch to an ENERGY STAR®-rated system with air conditioner installation.

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

Your air conditioner relies on a fan to deliver the cool air it makes. You adjust this fan at your thermostat by setting it to “auto,” which means the fan will only run when the air conditioner is working. Or you can adjust it to “on,” which signifies it will operate constantly.

Does putting your AC on “fan” save energy in Auburn and Opelika? Not necessarily. Typically, running your air conditioner’s fan constantly is going to increase your energy bill slightly.

But it also offers a few pluses (and drawbacks) when it comes 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 equalize your home’s comfort. This is good if you live in a two-story residence, since spaces upstairs can be warmer. It’s also great if you struggle with inconsistent cooling because of hot and cold spaces.

It’s also good if one of your loved ones has been diagnosed with allergies, asthma or other respiratory symptoms. That’s because the air is consistently being distributed and filtrated. On the other hand, you may have to replace your air filters more regularly.

Having the fan on constantly can also increase your energy bills. It could also cause the fan to wear out sooner and need air conditioning repair.

Your home may also appear more moist. Air conditioning helps control humidity by clearing moisture from the air. But if the fan is constantly on, it’s more difficult for moisture to drain from the condenser externally.

Air Conditioner Fan Set to “Auto”

This is the best energy-efficient setting, because the fan will only work when your air conditioner does. It’s good if your house always appears comfortable, no matter what spot you’re in.

There are a few downsides to using the auto setting. You could experience hot and cold spots in your residence and decreased air quality. This is because air isn’t continuously moving or being repeatedly purified.

That said, you’ll consume less energy and won’t have to change your air filter as frequently. Both are savings that can add up during the year, so you’ll have to think about what’s best for your needs.

If you’re having home comfort difficulties during the summer, Farnell Mechanical, Inc. can help. We install a substantial range of energy-efficient air conditioners that can keep your home comfier while also helping you save more on energy bills. Many also work with the latest smart home technology, giving you the opportunity to monitor and adjust temperature settings while away.

To learn more about how we can make your house more comfortable, contact us at 334-524-2458 now.