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What is in the system changes the repair-or-replace answer more than almost anything else about it — and the rules moved twice in eighteen months. Here is where they actually stand today.
In systems installed roughly up to 2010. Production and import into the United States ended on 1 January 2020. Servicing depends entirely on recovered and reclaimed stock, which is why the price per pound is what it is.
The standard from the mid-2000s to 2024. Equipment manufactured before 1 January 2025 can still be installed under the current federal position, and existing systems are unaffected.
What new equipment uses. Mildly flammable, which changes how a system is handled, and why leak detection is now part of the equipment rather than part of the service call.
EPA is explicit that “EPA does not require homeowners to replace their existing equipment.” An R-22 system that works can keep working indefinitely, and there is no deadline coming for it.
What changes the answer is a refrigerant-circuit failure. A leak, a compressor, an evaporator coil — anything that means putting refrigerant back into the system means buying reclaimed R-22 at reclaimed-R-22 prices, on a system that is by definition at least fifteen years old and whose other components are the same age. That is why a circuit failure on R-22 equipment is a replacement decision in all but name, while a capacitor on the same system is a $200 repair worth making.
EPA also advises against simply topping off a leaking system rather than finding and fixing the leak, which is worth knowing when a quote offers exactly that as the cheap option.
The sequence matters, because a lot of content published in 2024 and 2025 is still live and is now wrong.
Under the AIM Act, EPA’s Technology Transitions rule set a 700 GWP limit for residential and light commercial air conditioning and heat pumps, with a compliance date of 1 January 2025 for manufacture or import. R-410A is above that limit; R-454B (around 466) and R-32 (around 675) are below it, which is how the industry converged on those two. That part has not changed and is still in force.
The original rule also barred installing pre-2025 R-410A stock after 1 January 2026. EPA reversed that. A final rule published 26 May 2026 and effective 27 July 2026 — 91 FR 31284, docket EPA-HQ-OAR-2025-0005 — removes the installation deadline for systems whose specified components were manufactured or imported before 1 January 2025. EPA’s own sector page now reads: “No installation compliance date for systems where all specified components were manufactured or imported prior to January 1, 2025.”
Two caveats worth stating rather than hiding. First, this is a live dispute: a coalition of state attorneys general and the Natural Resources Defense Council filed challenges to the reconsideration rule in the D.C. Circuit in late July 2026. No injunction has issued and the rule remains in effect, but “settled” would be the wrong word for it. Second, the reversal is federal. New York’s own regulation (6 NYCRR Part 494) still applies a 1 January 2026 date to both manufacture and installation, and New York does not automatically adopt federal changes. Texas has no state refrigerant rule at all, so the federal position governs here without qualification.
The practical consequence for a Fort Bend County homeowner: R-410A equipment is not stranded, and a quote implying a legal obligation to replace a working R-410A system is out of date. Availability and price are a real constraint, since nothing new is being made. A legal obligation is not.
R-454B and R-32 carry the ASHRAE safety classification A2L: lower toxicity, lower flammability, with a burning velocity below 10 cm per second. They are not propane and they are not inert. In practice A2L sits close to the safest end of the refrigerant range, but it is a genuine change in handling, and the standards followed.
Equipment is certified to UL 60335-2-40, which ties allowable charge to the conditioned floor area served and the height at which air discharges. Where the served space is small relative to the charge, the system must carry a refrigerant detection system: a factory-calibrated sensor that detects the rated concentration within about 30 seconds and then shuts off the compressor, de-energizes ignition sources such as electric heat strips, and runs the supply fan to dilute the leak, continuing for around five minutes after the concentration falls back below the alarm level. The A2L provisions entered the model codes with the 2024 IMC, IBC and IFC.
Two reasons this is a Fort Bend County paragraph rather than a general one. The equipment is in the attic, above the living space, in almost every house here. And in unincorporated county there is no mechanical permit and no inspection on the installation — so whether the detection system was installed, wired and left enabled is between you and the contractor. That is a straightforward, specific reason to insist on a properly licensed contractor rather than a generic one.
The data plate on the outdoor unit names the refrigerant, usually as R-22, R-410A or R-454B / R-32, alongside the model and serial number. If the plate is sun-bleached past reading, which is common on a west-facing pad after fifteen Fort Bend summers, the model number alone is usually enough for a contractor to identify it.
Rule of thumb from the build year, which for a never-re-equipped house is the year on the appraisal district record: before about 2010, likely R-22. Roughly 2010 to 2024, R-410A. 2025 onward, an A2L. Original equipment in the county’s big 2010–2019 cohort is R-410A, which is precisely the equipment the reversal above protects.
No. EPA published a final rule on 26 May 2026, effective 27 July 2026, removing the installation deadline for systems whose specified components were manufactured or imported before 1 January 2025 — so even installing pre-2025 R-410A equipment remains permitted, let alone keeping a working one. The 700 GWP limit and the 1 January 2025 manufacturing cutoff both remain in force. Note that the reconsideration rule was challenged in the D.C. Circuit in late July 2026; it is in effect while that is pending.
It was right when it was written and it is out of date now, which is why so much published content still says it. The original rule did bar installing pre-2025 R-410A stock after 1 January 2026. EPA reconsidered and removed that installation deadline in a final rule effective 27 July 2026. New York is the exception that proves the point: its own regulation still applies the original date, because New York does not automatically adopt federal changes. Texas has no state refrigerant rule, so the federal position governs here.
Owning and running an R-22 system is not illegal and never became so. Production and import into the United States ended on 1 January 2020, so servicing depends on recovered and reclaimed stock, and EPA says plainly that it does not require homeowners to replace existing equipment. What changes the economics is a refrigerant-circuit failure — a leak, a compressor, a coil — because that means buying reclaimed R-22 for a system that is already at least fifteen years old.
They are classified A2L — lower toxicity, lower flammability, burning velocity under 10 cm/s — which places them near the safe end of the range rather than at the hazardous end. The response is engineered rather than incidental: equipment is certified to UL 60335-2-40, charge is limited by the conditioned area served, and where required a refrigerant detection system shuts down the compressor, de-energizes ignition sources and runs the supply fan to dilute a leak. It is a legitimate reason to use a properly licensed contractor, particularly where no permit or inspection applies.
The data plate on the outdoor unit names it, next to the model and serial number. If it has faded past reading — common on a west-facing pad — the model number alone is usually enough. As a rough guide from the build year: before about 2010 is likely R-22, roughly 2010 to 2024 is R-410A, and 2025 onward is an A2L such as R-454B or R-32.
The refrigerant on the data plate changes the repair-or-replace answer more than almost anything else. Get connected with an independent, TDLR-licensed Fort Bend County contractor.
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