How To Tell If Your AC Unit Is Energy Efficient in 2023

by | Jul 19, 2023 | AC Maintenance

When buying an air conditioner, Texans must consider both cost and comfort. While it’s necessary to consider the upfront cost of your air conditioner, it’s also important to think about how much running your AC will cost you over time.

Energy-efficient air conditioners can provide both comfort and savings. Buying a high-efficiency air conditioner upfront can cost more than a regular efficiency unit—but you’ll save more on your monthly bills. Those savings can offset the extra cost of the unit—and sometimes, you’ll end up saving money altogether!

The more efficient your unit is, the more you’ll save on your monthly bills. How can you tell if you have an energy-efficient unit? Read this!

Know your numbers: SEER 

The most critical number to know when considering energy efficiency is the Seasonal Energy Efficiency Ratio (SEER)


SEER is a simple rating: It’s the ratio of how much cooling your unit outputs over the course of an average cooling season, divided by how much energy it uses up during that season. The higher your SEER rating, the more efficient your unit—a SEER rating of 20 or more means your unit is extraordinarily efficient. Most modern air conditioners have a SEER rating of 13 to 21.


Fortunately, SEER is an easy number to find. You can find your SEER number on a yellow sticker on the side of your unit—the EnergyGuide sticker! If something’s happened to the sticker, you might be able to find the number in the manual for your unit—or you can even try calling your installer!

SEER won’t tell you everything

Air conditioners aren’t perpetual motion machines. As your unit works, friction in the machinery will cause wear and tear. This wear and tear will make your unit less efficient.


This means that the SEER rating of your unit will become less accurate the older your AC gets. Fortunately, there are some methods you can use to check your unit’s overall efficiency.


The easiest is to use a smart thermostat. Your smart thermostat can tell you how much energy you’re using to cool your home over time—and you can use that to determine how much you’re spending on cooling every month. 


Using this information, you can see how efficiently your unit is cooling your home. You will, of course, have to compare like-to-like—periods where the temperature was around the same, and you were cooling your home for about the same amount of time.


You can, of course, try to calculate this without a smart thermostat—just by manually tracking your cooling periods and energy bills—but a smart thermostat makes it a lot easier.

Regular maintenance can help you maintain efficiency

While we can’t stop your air conditioner from losing efficiency, we can slow the rate at which wear and tear affects your unit. By taking advantage of our maintenance plans, you’ll get a tune-up of your unit once or twice a year. These tune-ups are pretty extensive—and they get you discounts on repairs. You’ll end up with a more efficient unit and fewer, less expensive repairs!


Looking for a high-efficiency unit? Call Classic!

Our team can improve the lifespan of your existing unit with regular maintenance—and if it’s time for a new AC unit, we can help with that too!

So give us a call! The Classic team is here for all of your HVAC needs.

About The Author

John Magninat

John Magninat

Owner John Magninat is a third generation air conditioning repair man. Classic Services Air Conditioning & Heating is a family company with family values and our customers are our top priority.

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