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

July 16, 2020

During the hot weather, running your air conditioning can be your highest monthly utility expense. So, it’s given that you’re seeking approaches to use less energy. That could include using an energy-efficient AC setting or even making the switch to an ENERGY STAR®-rated system through air conditioner installation.

Switching your air conditioning’s fan setting is an additional way you can save money.

Your air conditioner works with a fan to deliver the chilled air it makes. You control this fan at your thermostat by changing it to “auto,” which means the fan will only work when the air conditioner is working. Or you can switch it to “on,” which means it will be on constantly.

Does putting your AC on “fan” save energy in Ellsworth? Not always. Typically, running your air conditioner’s fan all the time is going to drive up your energy bill slightly.

But it also offers a few pluses (and drawbacks) when it comes to your residence’s comfort. Here’s why.

Air Conditioner Fan Set to “On”

Having your air conditioner’s fan operate all the time can better balance your family’s comfort. This is good if you live in a two-story house, since rooms upstairs can be hotter. It’s also ideal if you struggle with uneven cooling because of hot and cold spots.

It’s also advantageous if someone in your household suffers from allergies, asthma or other respiratory illnesses. That’s since the air is constantly being circulated and filtrated. On the flip side, you may have to switch your air filters more regularly.

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

Your house may also feel muggier. Air conditioning helps balance humidity by removing wetness from the air. But if the fan is constantly going, it’s harder for moisture to drip from the condenser outdoors.

Air Conditioner Fan Set to “Auto”

This is the best energy-efficient setting, because the fan will only go when your air conditioner does. It’s great if your home always feels pleasant, no matter what area you’re in.

There are a few downsides to using the auto setting. You may have hot and cold locations in your house and decreased air quality. This is due to the fact air isn’t always flowing or being constantly filtered.

On the other hand, you’ll use less energy and won’t have to get a new 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 warm weather, Walter's-Eaton's Electric, Plumbing, Heating & AC can support you. We sell a large range of energy-efficient air conditioners that can keep your residence more pleasant while also helping you save more on electricity costs. Many also work with the latest smart home technology, giving you the opportunity to monitor and change temp settings while on the go.

To learn more about how we can make your home more comfortable, contact us at 715-318-6728 now.