Rules
SEER2 explained for Winter Springs, Florida homeowners
SEER2 is the efficiency test in force since 1 January 2023, run at a higher static pressure than old SEER. Split-system air conditioners installed in Florida must meet 14.3 SEER2 under 45,000 Btu/h, and in the Southeast the standard is enforced at installation, not at manufacture — so old stock legal elsewhere cannot be fitted in Winter Springs.
The floors
Minimum SEER2 for a Winter Springs installation
| Equipment | Minimum | Where it applies |
|---|---|---|
| Split-system AC, under 45,000 Btu/h | 14.3 SEER2 | Southeast region — Florida. Enforced at installation. |
| Split-system heat pump | 14.3 SEER2 / 7.5 HSPF2 | National |
DOE’s guidance pairs the regional standard with an 11.7 EER2 in its worked examples; we do not state a separate EER2 floor for Florida beyond that.
Florida specifically
Why a bargain unit may not be legal to fit here
The bit that catches people out
In Florida the standard is enforced at installation, not at manufacture. DOE is explicit: beginning 1 January 2023, only basic models that meet the amended regional standards may be installed in the Southeast or Southwest region. Units that meet the base national standard but not the regional one can still be built — they just cannot legally be installed in Winter Springs. If a quote is notably cheap and the model number is old, that is the question to ask.
The honest limit
SEER2 rates the box, not your house
SEER2 is a rating of the box. It is not a rating of your house. The test is run at a defined external static pressure; a 1983 Wildwood or 1977 Winter Springs Unit 4 attic duct system may be running well above it, in which case the equipment cannot move its rated airflow and will not deliver its rated efficiency. This is the single most common reason a homeowner pays for a high-SEER2 system and does not see the bill move. Test the ducts before you buy efficiency: what duct work costs here.
The efficiency tier has one direct financial consequence: Duke’s largest rebate tiers are gated on it. The $1,000 strip-heat-to-heat-pump tier as published requires 16.8 SEER / 9.0 HSPF, or 16 SEER2 / 7.5 HSPF2. The rebate tiers, with their caveats.
The City’s own permit application asks for tons and SEER on its mechanical line, so the rating you buy goes on the public record in Winter Springs.
Efficiency
Comparing two quotes with different SEER2 numbers?
Ask for the AHRI matched-system rating, not the condenser’s number on its own. A mismatched coil changes the answer.
Sources
Where the facts on this page come from
Every figure above is either a primary-source document or a named third-party cost guide, and all of it was checked in September 2026. Fee schedules, rebate amounts and market prices change without notice — if you are about to spend money on one of these numbers, open the source and check it.