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

July 16, 2020

During the high temperatures, running your air conditioning can be your largest monthly electrical expense. So, it’s given that you’re seeking ways to consume less energy. That might involve finding an energy-efficient AC setting or even stepping up to an ENERGY STAR®-rated model during air conditioner installation.

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

Your air conditioner uses a fan to deliver the cold air it creates. You control this fan at your thermostat by changing it to “auto,” which indicates the fan will only be on when the air conditioner is operating. Or you can switch it to “on,” which indicates it will operate continuously.

Does putting your AC on “fan” save energy in Des Moines? Not always. Generally, using your air conditioner’s fan all day is going to make your energy bill slightly higher.

But it also provides a few perks (and downsides) in relation to your home’s comfort. Here’s why.

Air Conditioner Fan Set to “On”

Having your air conditioner’s fan go all day can better equalize your family’s comfort. This is great if you own a two-story residence, since areas upstairs can be more hot. It’s also ideal if you have problems with inconsistent cooling due to hot and cold spaces.

It’s also good if someone in your household has allergies, asthma or other respiratory problems. That’s since the air is constantly being distributed and filtrated. However, you may have to install new air filters more often.

Having the fan on constantly can also drive up your energy bills. It could also make the fan wear out prematurely and need air conditioning repair.

Your house may also seem more humid. Air conditioning helps balance humidity by drawing water from the air. But if the fan is continuously running, it’s challenging 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 operate when your air conditioner does. It’s ideal if your home always feels pleasant, whichever room you’re in.

There are a few disadvantages to using the auto setting. You could run into hot and cold locations in your residence and reduced air quality. This is because air isn’t constantly moving or being constantly filtrated.

On the flip side, you’ll require a lower amount of energy and won’t be required to get a new air filter as frequently. Both are savings that can build up over 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, Kohles & Bach Heating & Cooling can assist you. We sell a wide range of energy-efficient air conditioners that can keep your home more pleasant while also helping you save more on electrical bills. Many also work with the latest smart home technology, giving you the ability to oversee and adjust temperature settings while on the go.

To learn more about how we can make your home more comfy, contact us at 515-207-6569 today.