SEER2 Explained: What Rating Does a Florida Home Need?
SEER2 replaced SEER in 2023. Learn what the rating means, the 14.3 SEER2 minimum for Florida, and how to choose the right efficiency for your home.
SEER2 is the current efficiency rating for central air conditioners and heat pumps. The higher the number, the less electricity the system uses to cool your home. In Florida and the rest of the Southeast, new split-system central air conditioners must meet a federal minimum of 14.3 SEER2. Because Florida systems run nearly year-round, many homeowners find that going above the minimum pays off in lower power bills.
What does SEER2 mean?
SEER2 stands for Seasonal Energy Efficiency Ratio 2. It measures how much cooling a system delivers over a typical season compared to the electricity it uses. Think of it like miles per gallon for your air conditioner.
SEER2 replaced the older SEER rating on January 1, 2023. The new test uses conditions that better match how systems work in real homes, including more realistic ductwork resistance. Because the test is tougher, the same system scores a lower number under SEER2 than it did under SEER. That is why the numbers look different, even though the equipment is not less efficient.
SEER vs. SEER2: why the numbers changed
If you are comparing an older quote or an older system to a new one, keep in mind that a SEER2 number is typically lower than the equivalent SEER number for the same equipment. For example, the old Southeast minimum was 15 SEER, and the new minimum is 14.3 SEER2. Those represent roughly the same efficiency level measured two different ways.
When comparing systems, always compare SEER2 to SEER2.
What is the minimum SEER2 in Florida?
Florida is in the federal Southeast region. For new split-system central air conditioners under 45,000 Btu/h (most homes), the minimum is 14.3 SEER2. Larger systems have a slightly lower minimum. This applies to newly installed equipment, not to the system already in your home. Your existing AC is legal to keep running and repair.
Pick Your RatingWhat SEER2 rating should you choose?
The right rating depends on how long you plan to stay in the home, your budget, and how hard your system works. Here is how we explain it to homeowners:
14.3 to 15 SEER2: meets code and is the lowest upfront cost. A reasonable choice if you may sell the home in the next few years.
15.3 SEER2 and up: a common sweet spot for Florida homes. It is also the minimum for FPL’s residential AC rebate, which since September 2025 requires at least 15.3 SEER2 (one point above the federal minimum).
16 to 20+ SEER2: higher upfront cost, lower monthly bills. Often includes variable-speed technology that runs longer at lower speeds, which also removes more humidity. That matters a lot in South Florida.
Real SavingsDoes a higher SEER2 really save money in Florida?
In general, yes, more so here than in milder climates. Because South Florida systems run so many hours each year, each step up in efficiency adds up. The savings depend on your home’s size, insulation, ductwork and thermostat habits. During a free installation quote, we can walk you through the options for your specific home so you can weigh the upfront cost against the monthly savings.
Efficiency is only part of the story
A high SEER2 system that is the wrong size, or installed on leaky ducts, will not deliver its rated efficiency. That is why we size every system based on your home and inspect your ductwork before recommending equipment. An oversized system cools too fast and shuts off before it removes humidity, leaving your home cold but clammy.
Learn more about our AC installation process, or read about the refrigerant change affecting new systems.
Frequently Asked Questions
Is 14.3 SEER2 good for Florida?
It is the legal minimum for most new central AC systems in the Southeast. Many Florida homeowners choose a higher rating because their systems run so many hours each year.
Is SEER2 the same as SEER?
No. SEER2 uses a newer, tougher test, so the same system has a lower SEER2 number than its old SEER number.
Do I have to replace my AC because of SEER2?
No. The SEER2 minimum applies to new equipment. Your current system can stay in service and be repaired.
Where can I find my system’s SEER2 rating?
Check the yellow EnergyGuide label or the manufacturer’s rating sheet. You can also look up the model number in the AHRI directory.
What SEER2 do I need for an FPL rebate?
FPL’s residential AC rebate currently requires 15.3 SEER2 or higher and a full system replacement (outdoor unit, indoor air handler and coil), installed by an FPL Participating Independent Contractor. Program terms can change, so check with FPL before you buy.
Thinking About a New System?
Get a free in-home quote. Right now, take $150 off a new AC installation when you book through the TopTec app.
Book Service OnlineCall (954) 203-8426Keep Reading
Cooling On Demand Inc. is a Florida Certified Air Conditioning Contractor, license #CAC1822848. Read our customer reviews.