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R-410A to R-454B: what the phase-down means in Casselberry
New residential AC and heat pump equipment has had to use a refrigerant under 700 GWP - in practice A2Ls such as R-454B - since 1 January 2025. Existing R-410A systems remain legal to repair and recharge. Pre-2025 R-410A equipment already in the channel can still be installed.
What the R-410A phase-down actually says
| Date | What it does |
|---|---|
| 1 January 2025 | Manufacture-and-import compliance date. New residential and light commercial AC and heat pump equipment must use a refrigerant under a 700 GWP limit. In practice that means A2L refrigerants such as R-454B. |
| 1 January 2025 (installation) | Installation compliance date — with the exception that there is no installation compliance date for systems where all specified components were manufactured or imported before that date. Pre-2025 R-410A equipment already in the channel can still be installed. |
| 1 January 2028 | Sale, distribution and export of these products prohibited, three years after the manufacture and import compliance date. |
EPA Technology Transitions HFC restrictions by sector, under the AIM Act. EPA page last updated 28 August 2026.
If you already own an R-410A system
Your existing R-410A system is not illegal and does not have to be replaced. It can still be legally repaired and recharged. Nobody is going to make you scrap a working system, and any contractor who tells you the refrigerant is banned and you must replace immediately is selling, not informing.
What genuinely changes is the arithmetic on an old system. R-410A is being phased down, which over time makes a large refrigerant repair on a fifteen-year-old system a worse bet than it used to be. That is a shift in the repair-versus-replace balance, not an emergency.
Which Casselberry houses this actually affects
Two Casselberry-specific consequences, both checkable against the parcel file.
- The 2000s subdivisions are hitting this now. Legacy Park (median 2007), Lost Lake Estates (2000), Vistas at Lake Howell (2004) and the Villas at Deer Run (all 25 built in 2006) were built with R-410A equipment. Those systems are around twenty years old, and any first replacement done before 2025 is itself R-410A. A whole pocket of the city reaches end of life together.
- The 1970s and 80s majority face a different question. 57.1% of the city was built 1970–89 and much of it is still on straight-cool plus electric strip heat. For those houses the refrigerant transition is a footnote next to the heat pump conversion — which is where the Duke rebate money is.
A2L refrigerants such as R-454B are mildly flammable, which changes handling, leak detection and some installation practice. It does not change what your house needs. Ask whether the contractor is trained and equipped for A2L; do not accept “we still fit R-410A” as a reassurance on a new system in 2026.
Seminole County Property Appraiser CAMA extract (Parcels.csv, dated 2026-09-05). Improved residential parcels — single-family, townhome and condominium — in city tax district C1, City of Casselberry. n = 8,563.
Quoted a big refrigerant repair?
Ask for the system's manufacture date and refrigerant type in writing before you authorise it. Those two facts decide whether the repair is worth making.
Phone: (689) 308-3675 · Monday-Friday, 8:00 AM - 5:00 PM
Where the facts on this page come from
Every figure above is either a primary-source document or a named third-party cost guide. 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.