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

Feb 22, 2024


Jake Nielson


During the summer, running your air conditioning can be your largest monthly electrical expense. So, it’s normal that you’re looking for methods to save. That can entail using an energy-efficient AC setting or even upgrading to an ENERGY STAR®-rated unit with air conditioner installation. Changing your air conditioning’s fan setting is an additional way you can spend less money. Your air conditioner works with a fan to dispatch the chilled air it produces. You control this fan at your thermostat by setting it to “auto,” which signifies the fan will only run when the air conditioner is going. Or you can set it to “on,” which signifies it will run continuously. Does putting your AC on “fan” save energy in Warrenton? Not always. Typically, using your air conditioner’s fan all the time is going to make your energy bill slightly higher. But it also offers a few pluses (and disadvantages) in regard 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 balance your house’s comfort. This is ideal if you live in a two-story home, since areas upstairs can be more hot. It’s also ideal if you have issues with inconsistent cooling due to hot and cold spots. It’s also great if someone in your household has been diagnosed with allergies, asthma or other respiratory symptoms. That’s due to the fact the air is continuously being dispersed and filtrated. However, you may have to switch your air filters more often. Having the fan on all the time can also make your energy bills more expensive. It could also result in the fan wearing out faster and need air conditioning repair. Your house may also seem more humid. Air conditioning helps manage humidity by drawing water from the air. But if the fan is continuously running, 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 go when your air conditioner does. It’s great if your home always appears comfy, whichever room you’re in. There are a few disadvantages to using the auto setting. You might have hot and cold locations in your home and lower air quality. This is since air isn’t continuously being distributed or being constantly filtered. On the flip side, you’ll need reduced energy and won’t have to switch your air filter as frequently. Both are savings that can build up during the year, so you’ll have to think about what’s right for your household. If you’re having home comfort difficulties during warm weather, Schraer Heating & Air Conditioning can assist you. We offer a substantial range of energy-efficient air conditioners that can keep your home more pleasant while also helping you save more on electricity costs. Many can be partnered with the latest smart home technology, allowing you to check and regulate home comfort settings while away. To discover more about how we can make your residence more pleasant, contact us at 636-456-5041 today.