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Understanding SEER Ratings: What Homeowners Need to Know

By Aztil –

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When it’s time to replace your climate control system, you get a lot of information thrown at you. The size of the unit in tonnage and the HVAC SEER rating. What does SEER even mean? Why should it matter to a homeowner? You feel like the HVAC company has its own language.

The SEER rating influences your energy bills, home comfort, and environmental footprint, so you need to consider the best rating for your needs. We want to help you understand this rating system, how it affects your HVAC system, and what to consider when choosing a new one.

What Is an HVAC SEER Rating?

The Seasonal Energy Efficiency Ratio (SEER) rating measures the efficiency of your air conditioner or heat pump over the cooling season. It’s a way for you to easily compare one unit’s efficiency over another. A higher SEER rating indicates a higher efficiency.

How SEER Is Calculated

To get the SEER, you divide the unit’s cooling output over a season by the total electricity it consumes. For example, if a unit has a SEER rating of 18, it puts off 18 BTUs for every watt-hour of electricity it uses.

Why Does SEER Matter?

Does the SEER really matter? Yes, and here’s why.

  • Energy efficiency and lower utility bills: With a higher HVAC SEER rating, it takes less energy to cool your home, lowering your utility bills. When you upgrade from a model with a 10 SEER to one with a 16 SEER, you can save between 30 and 40 percent of your cooling costs.
  • Improved home comfort: Units with higher SEER ratings feature variable-speed compressors and fans, helping maintain more consistent indoor temperatures while reducing humidity. It also avoids frequent on/ off cycles and runs more quietly.
  • Environmental benefits: You reduce your home’s carbon footprint with increased efficiency. Most units with a high SEER provide eco-friendly refrigerants that comply with AIM Act regulations.

What Is a Good SEER Rating for Florida Homes?

We all know that the roads in Florida shimmer in the summer because the heat is melting them, and this is why you rely on your air conditioner to be in top form and energy efficient. Choosing the proper rating can help save you money while increasing your comfort. Here’s what you need to know:

  • Minimum: 15 SEER, required by law
  • Better Efficiency: 16-18 SEER
  • Best Performance: 20+ SEER

The ideal balance between cost and energy efficiency typically falls between 16 and 18 SEER.

SEER Rating vs. Real-World Savings

With a higher SEER and better energy efficiency, factors still affect your actual savings, such as home insulation, ductwork condition, and thermostat settings.

HVAC SEER Rating Savings Comparison

Here’s a look at the savings you can expect:

  • Upgrading from 10 SEER to 15 SEER saves around 33 percent
  • Upgrading from 10 SEER to 18 SEER saves around 44 percent
  • Upgrading from 10 SEER to 20+ SEER saves around 50 percent

A unit with a higher SEER does cost more upfront, but in the long run, it saves you money.

Choosing the Right SEER for Your Home

The SEER rating isn’t the only factor you should consider when it’s time to buy a new cooling unit for your home. Here are a few other factors to consider:

  • Size and layout of the home: You need a professional load calculation to ensure that you get the correct unit size for maximum efficiency.
  • Smart thermostat: This thermostat can help improve efficiency even more.
  • Condition of the ductwork: Leaking or uninsulated ductwork lowers efficiency even with a higher SEER-rated unit.
  • Budget and return on investment (ROI): You should consider your overall savings throughout the life of the unit.

Is a Higher SEER Always Better?

No, it isn’t. Even though a unit with a higher HVAC SEER rating offers better energy efficiency, it costs more upfront. To determine the best SEER for your home, consider:

  • How often do you run the air conditioning
  • How long do you plan to stay where you live
  • Your budget for a new system
  • Your home’s level of insulation and energy efficiency

If your home has an outdated HVAC system, an upgraded SEER rating can save you a lot of money.

Upgrade to a High-SEER HVAC System With Aztil Air

When it’s time to upgrade your HVAC system, Aztil Air is the company you can trust. We offer a selection of high SEER-rated air conditioners to help keep your home cool, comfortable, and cost-effective year-round. Contact us today to explore your options and find the perfect unit for your home.

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Today the technician Dana Dussualt came over to replace an old dirty, moldy fiberglass in our air intake. It was a yucky job and he did the service so professionally. We were so happy with the finish product. I would definitely recommend him and Aztil.
I had guest coming into town and Alex saved the day! My 1st floor AC unit suddenly stopped working. Aztil squeezed me in right away and Alex fixed the problem in no time. He was also super nice - a pleasure to work with!
Michael King did a great job with my maintenance today! He always communicates when he’s on his way, and always has a smile to offer.
Niko was here this morning, on time, and is polite, courteous and professional!! He completed the maintenance and reviewed my ultra violet and changed my filter - just a pleasant experience - !!
Response from the owner:Hi Susan Diamond, thank you for sharing your positive experience with Dana. We're glad to hear that he was punctual, polite, and professional during the thermostat installation. It's great to know that he took the time to explain the operating instructions to you in detail. We appreciate your feedback and hope you enjoy using your new thermostat.
Cody was amazing. He was knowledgeable, personable, and thourow. Aztil is very lucky to have such capable hand working for them.
Response from the owner:Hi Ana, thank you for your kind words! We're so glad to hear that Antonio did an excellent job and that you were pleased with the outcome. Thank you for being a valued customer.
Michael King. Was very easy to work with and he is focused on providing a good client experience. He is an asset to your company
Niko was great , polite and thorugh highly recommend
Our tech, Elder, provided great service along with good information on how to maintain my HVAC system since we’re not here full time.
He resolved the error I was receiving which shut my system down and explained how to prevent it. Thanks Elder!
We have a service contract and when I called Aztil on a Saturday morning because my AC was not working, they came out that day. Dana was the technician. He was thorough, patient, and explained the situation. He quoted me a price for the remediation job needed, had me e-sign the contract. He contacted me for scheduled date which was 3 days later. He came when he said, and did the job .
Niko was friendly and efficient.
Told me how he thought my system was and performing and made recommendations for the future.
He took good care of us.
Niko was very polite and cleaned up after him self highly recommend him
Response from the owner:Hi Kenneth, thank you for your kind words! We're so glad to hear that Marco did an excellent job and that you were pleased with the outcome. Thank you for being a valued customer.
Rafael Carchi was an excellent hard worker. He had a huge job cleaning the coils in our AC and proceeded without hesitation after helping us with the financial side! I would highly recommend him!
Dana was Excellent, extremely Personable, and followed up on my part and and was on top of our problem. My air went off last night. Dana came and was able to figure out the problem. He returned at 9:30 the next morning with the part and it was fixed by the next morning.
Thanks Dana!!
Response from the owner:Thank you so much for the wonderful review, Cheryl Abrams! We are so glad that Ricardo was able to exceed your expectations and that you would recommend AZTIL. We always strive to provide excellent service to our customers.
Niko was the technician
Got my air conditioner humming like new. Prior to the service it was running well, but I did hear a noise which is now gone. He was professional in his service.
Michael was the technician that came out to my house to take care of the regular maintenance check on my AC. He was polite, professional, knowledgeable and right on time! I would recommend Michael and I will be requesting him for future AC service.
William was the technician that came out to service my AC. He was right on time, professional, courteous and knowledgeable. Highly recommend!
Miko is an excellent technician he arrived early and took good care of the air conditioning system
Response from the owner:Hi Dr. Joy, thank you for your kind words! We're so glad to hear that Aztil did an excellent job and that you were pleased with the outcome. Thank you for being a valued customer.
I had bad experience with multiple AC companies in the past. First time i'm dealing with the company who's having technicians fully quipped and knowledgeable. They measured every room, twice checked the attic before they start the work. Replacing the unit, doing insulation on the attic, partial replacing and sealing docks. Everything is going very professionally.
Technician Niko was very professional, prompt and informative. Appreciate his service . Thank you
Many thanks to Juan Ortega for his hard work and extensive knowledge. He is truly an expert in his field
I have the highest praises for Rafael Carchi & Elder Zavala who did an amazing job, way beyond my expectations!
They were able to repair my drain issue in a way that was creative in a very challenging situation. They explained everything & were very patient & understanding with all my concerns. They were a fabulous team! I would gladly work with them again in the future.
Aztil customer service sent a technician almost immediately when my air conditioner stopped working. Elder Zavala was the technician that came to my home. He is smart, patient and very good at explaining what he was doing. Elder diagnosed my problem quickly and had the issue resolved in a timely manner. Elder is a wonderful representative for the company and excellent at what he does. I highly recommend Elder Zavala.
Michael King was great, very professional and thorough.
I was impressed with how hard the gentlemen worked to get my new ac unit in
They were kind and respectful. Can't say much about prices because everything is crazy but im glad I had them do it.
Michael did a great job.
Dana was amazing, friendly and efficient!!!
Michael did a great job. Will always request him
Niko Garza was punctual, efficient, and communicated in a way easy to understand.
Wow, thank goodness for Aztil !!!!
The AC went down yesterday evening 7pm, and Niko G & Elder Z (with Aztil) was here by 11 am this morning and had everything up and running in less than an hour. He was very professional and accommodating. He took the time to explain what was the issues were and the repairs that were done.
Thanks Juan for coming out and saving us from the relentless Florida, summertime heat 😊👍😊

up and run
Response from the owner:Carol Haber, thank you for your review! We are glad to hear that Juan was able to get your AC up and running quickly. We appreciate your kind words and thank you for choosing Aztil.
Michael was teriffic. Great technician and very pleasant
Response from the owner:Hi Mel, thank you for your kind words! We're so glad to hear that Dana did an excellent job and that you were pleased with the outcome. Thank you for being a valued customer.
Dana is the technician. He is very professional and thorough, I will make every effort to utilize his service at my home whenever possible.
Aztil has always been a very reliable and professional company, and Nico was a terrific and professional technician who was able to diagnose our problem. We were just surprised that our out-of-pocket was almost $2000 even with a maintenance contract and a warranty on the compressor.
George (Jorge) is excellent and very professional. Very please with quality of his work and taking time to explain and get me up and running w/new WiFi system. Definitely would recommend him!!
AZTIL sent a Tech named Michael King and he was awesome and respectful. He exerted due diligence to perform the maintenance right the first time. He was detail oriented , courteous and knowledgeable. He made the right decision to ensure our safety. He briefed after his work.

Thank you Michael for great job!!!

My rating is 5.0 which you deserve!

Dr Benjamin US Army MSG Retired PSL
Tech Nico very helpful did a great job will request him again. Thanks.
Ramon was punctual, friendly, knowledgeable and quick. He explained everything he was doing even showing me the old part he replaced. Great Job as always!
Niko was our technician and did a great job. He explained everything very clearly and was professional the entire time he was here. I highly recommend Aztil and Niko for your AC service and maintenance needs.
Very Prompt, technician Alex was professional and explained everything he was doing. We have been with Aztil for over 15years. They have been recently taken over by a larger firm but still keeping the name Aztil . So far so good .
Dan ,
10/13-25
He was a great technician!
Nico was great! He went above and beyond for us!
Excellent customer service. My technician, Niko, was very knowledgeable and walked me through all of my AC issues.
Antonio was awesome, got their membership deal, worth it for AC repair and maintenance. He fixed the problem quick and was efficient. Great experience, thank you
niko is so great and professional!
Nicholas Garza was pronto didn’t even have to wait!!!! Took care of business and cooling off🥰😎😊😉
Niko was fabulous as usual. He took a good amount of time to talk with us about our AC
There are some problems to be resolved and Niko explained the options
We appreciate his time and efficiency

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