Equipment and refrigerant
R-410A to A2L refrigerant: what it means in Longwood, FL
Your existing R-410A system can still legally be repaired and recharged — the EPA rule restricts new equipment, not servicing. What changed is that new equipment now uses A2L refrigerants such as R-454B and R-32, so replacement R-410A condensers and coils come only from remaining pre-2025 inventory.
What the rule actually says
A 700 GWP limit, and a 2,088 GWP refrigerant
Under the AIM Act, the EPA's Technology Transitions rule sets a 700 GWP limit for residential and light commercial air conditioning and heat pumps. R-410A has a GWP of 2,088, so it is above the limit. The compliance dates: 1 January 2025 for manufacture and import of self-contained products, and 1 January 2025 as an installation compliance date for field-assembled systems — mini-splits and unitary systems — with an explicit exception where all specified components were manufactured or imported before 1 January 2025.
Read plainly: the rule is about what may be made and installed, not about what may be serviced. Nobody is coming for the working R-410A system in your side yard.
Where it bites
Matching a coil to a condenser that is no longer made
The practical constraint is component matching. When one half of an R-410A split system fails — usually the condenser or the evaporator coil — the replacement has to match the refrigerant and the metering of the half that stays. A2L equipment is not a drop-in for an R-410A coil. So the question on an older Longwood system is not “can this be repaired” but “can a matching part still be sourced, and at what price.” That gets harder every season as pre-2025 inventory thins.
Longwood's stock makes this a live question rather than an academic one. Of 4,962 improved residential parcels, 66.5% were built between 1970 and 1989 and the median build year is 1979 — houses that are typically on their third or fourth system, which puts a great many of them on an R-410A system installed somewhere between about 2005 and 2024. Those are the systems where a leak or a compressor failure now tips the decision toward replacement. Working through that decision.
What A2L equipment is
Mildly flammable, engineered for, and permitted the same
A2L refrigerants are mildly flammable, which is what the class designation means, and equipment designed for them includes leak detection and mitigation as part of the product. That is a manufacturer and code matter rather than something a homeowner configures — the relevant point when buying is simply that A2L equipment is a different product line, not a relabelled one, and that it is what new systems are now.
New installations are permitted and inspected the same way regardless of refrigerant. In Longwood that means a City mechanical permit at $246.61, no plans examination for equipment replacement, and a mechanical final. The permit guide.
Sources
- U.S. EPA, HFC restrictions by sector (AIM Act Technology Transitions rule). https://www.epa.gov/climate-hfcs-reduction/hfc-restrictions-sector
- U.S. DOE, 2023 Central Air Conditioner Standards FAQ. https://www1.eere.energy.gov/buildings/appliance_standards/pdfs/2023_CAC_Standards_FAQ_10-5-2022_Final.pdf
- Seminole County Property Appraiser CAMA extract (Parcels.csv, dated 5 September 2026), tax district L1 — Longwood; improved residential parcels, DOR codes 01 and 04. https://www.scpafl.org/
- City of Longwood, 2020 FBC Chapter 1 Administrative Amendments (Exhibit A to Ordinance No. 21-2196), Sections 105.2, 105.2.1 and 107.3. https://www.longwoodfl.org/DocumentCenter/View/4736/2020-FBC-Londwood-Administrative-Amendments-PDF-
- City of Longwood Fee Schedule (Resolution 26-1724, effective 1 July 2026). https://www.longwoodfl.org/702/Fee-Schedule
- This Old House, AC compressor cost (third-party pricing guide). https://www.thisoldhouse.com/heating-cooling/ac-compressor-cost
Figures are dated. Permit fees, rebate amounts and code cycles change — re-check the primary source before you rely on a number here.
Ask what refrigerant your system uses
It is on the data plate. If it says R-410A and the system is over ten years old, that changes how a large repair should be priced against a changeout.