High-Efficiency AC in Florida: What the Ratings Show and Miss

The legal floor in Florida, and what sits above it

Federal rules sort central air conditioners into regions, and the table counts Florida in the Southeast. For a split-system air conditioner under 45,000 Btu per hour, installed on or after January 1, 2023, the Southeast minimum is 14.3 SEER2. At 45,000 Btu per hour or more, the Southeast minimum is 13.8 SEER2. Btu per hour is a measure of cooling capacity: the heat a unit can remove in an hour. In a split system, refrigerant piping, the tubing that carries the cooling fluid, joins the outdoor and indoor units. The regulation adds that an outdoor unit whose certified combination rates below the standard for a region cannot be installed in that region. Our reading: in Florida, 14.3 SEER2 is the legal minimum for those units, so it marks the start of the choice, not a high-efficiency rating. Packaged units keep every part in one cabinet. They have their own line in the regulation, so ask which rule applies to your quote.

ENERGY STAR still labels air-source heat pumps. It says a ducted one can be thought of as a central air conditioner that also works in reverse to heat a house. The federal minimum for a split-system heat pump is 14.3 SEER2, and ENERGY STAR begins at 15.2 SEER2. Its Most Efficient 2025 recognition asks for 16.0 SEER2 in a split-system heat pump. That recognition ran from January 1, 2025, through December 31, 2025. A recognized model may keep the designation for as long as it stays on the market. ENERGY STAR's heat pump page, read on November 4, 2026, still promotes Most Efficient 2025, so check the year on any such claim. Heat pumps in Florida covers what the ENERGY STAR heat pump levels include, and heat pump vs straight-cool air conditioner covers the choice between the two kinds.

EPA's letter on the sunset says commenters named two other resources for telling efficient models apart. They are Consortium for Energy Efficiency performance tiers and the EnergyGuide label. Our reading: if a quote cites a tier or a label, ask to see the document. Then compare the rated SEER2 and EER2, the hot-day rating, yourself.

SEER2 and EER2: two numbers, and what EPA says about variable speed

EER2 is the second number on the rating. ENERGY STAR defines EER2 as the average rate of cooling delivered divided by the average rate of electricity consumed. A note in the federal table says EER is rated at an outdoor temperature of 95 °F dry bulb. Dry bulb temperature is the ordinary air temperature a thermometer reads. The National Weather Service Tampa Bay Area office says rainy-season high temperatures run from the upper 80s to the middle 90s, along with rising humidity. Our reading: a Tampa Bay summer afternoon sits close to the 95 °F test point. So EER2 is worth asking for next to SEER2, which averages a whole season.

A variable-speed, or inverter, compressor can run at many speeds instead of only on or off. Single-stage, two-stage and variable-speed compressors explains the stages, and variable-speed air handlers covers the indoor blower. In its letter on the heat pump specification, EPA said it lowered the EER2 requirement to accommodate variable speed units. EPA says those units have excellent seasonal performance and, on average, do not run at full capacity during peak cooling. Our reading: a variable-speed model can show a strong SEER2 beside a lower EER2. Read the two together, and ask the contractor to explain any wide gap.

What the rating leaves out: installation and humidity

ENERGY STAR's required wording for manufacturers says proper sizing and installation of equipment is critical to achieve optimal performance. Its installation-manual text adds that proper refrigerant charge and proper air flow are critical to achieve rated capacity and efficiency. Refrigerant charge is the amount of refrigerant in the system, and setting it is work for licensed contractors.

UF/IFAS Extension, the University of Florida's extension service, says a system's operating efficiency relies on proper installation to achieve its performance rating. It says that even with a high SEER, an inefficient system, for example one with leaky ductwork, will not deliver the full value of the efficiency. The reason it gives is that the air distribution system is not used to determine the SEER rating. Ductwork in Florida covers leaks and airflow.

ENERGY STAR ended its installation-verification program, the ENERGY STAR Verified HVAC Installation program, on August 31, 2025. EPA says it believes in quality installation of HVAC equipment and will keep promoting its value on the ENERGY STAR website. Our reading: a SEER2 or ENERGY STAR figure rates the equipment, not the installer, so the installation has to be checked on its own.

UF/IFAS Extension asks whether a high SEER system will also take care of the humidity in a house, and answers: not necessarily. It says to consider the sensible heat ratio, or SHR. The SHR shows how a unit's load splits between cooling the air and removing moisture. It adds that many high-SEER units have poorer humidity removal capacity, so the contractor should verify that the unit can remove the calculated moisture load. A Manual J load calculation, the standard home load calculation, yields both the latent (moisture) load and the temperature load, according to UF/IFAS. Our reading: that makes the load calculation, not the SEER2 number, the document that shows whether a unit can handle a humid day. Lab-home tests of variable-capacity units in Florida are summarized in heat pumps in Florida, and why a house feels humid with the AC running covers the causes.

Credit pages and payback: what is out of date, and what is not stated

The federal 25C home-improvement credit does not cover equipment placed in service after December 31, 2025. The IRS instructions for its residential energy credits form say the same, as of their April 30, 2026 review date. ENERGY STAR's heat pump page, read on November 4, 2026, still describes a federal credit period that runs to December 31, 2032. Our reading: the two federal pages disagree, so check any quoted credit against the IRS page and ask a tax professional before counting on it. ENERGY STAR's page also says many utilities offer incentives for certified heat pumps and tells readers to check with their local utility. This page does not know which programs apply in your part of Tampa Bay.

EPA lists a principle for setting ENERGY STAR levels. If a certified product costs more, buyers should recover the extra cost through utility bill savings within a reasonable period. Our reading: that is a rule for setting the label, not a result for any one home. No document used for this page states a payback period for a Tampa Bay house. UF/IFAS Extension advises asking your contractor to calculate your utility-bill savings and total lifetime costs. Our reading: ask for that calculation in writing. It should show the electricity rate, run hours and equipment ratings it assumes, so two quotes can be compared on the same inputs.

What to ask for in writing before you pick a rating

These questions come from the documents above. Get each answer in writing.

1. Which outdoor unit, and which indoor coil or air handler, is the rating for? A rated combination of indoor and outdoor units is described in heat pumps in Florida.
2. What are its SEER2 and EER2, and how do they compare with the 14.3 SEER2 floor?
3. Is it single-stage, two-stage or variable-speed, and what will it do about humidity on a humid day?
4. What did the load calculation show for the moisture load and the temperature load? UF/IFAS Extension says not to use a contractor who wants to size your system solely on the square footage of your house. For the sizing method, read what size AC you need in Florida.
5. How will the ducts be inspected before the unit is connected to them? UF/IFAS Extension advises asking your contractor to inspect your ducts for leaks, incomplete connections, and compatibility with the rest of your system.
6. Which label or tier does the quote rely on, and where is the document? A cooling-only unit showing the ENERGY STAR mark needs an explanation. EPA's letter ties the end of the mark to units made on or after February 1, 2026.
7. Which savings calculation and which incentives are you counting, and who confirms them? UF/IFAS Extension says to request a calculation of your savings.

Sizing, refrigerant charge and duct work are for licensed contractors, so leave them to the contractor.