Can You Still Get R-410A Refrigerant for Your AC?

Yes. Federal rules do not stop technicians from servicing or recharging an existing R-410A air conditioner or heat pump. What changed is new equipment: under 40 CFR 84.54, new residential and light commercial AC and heat pump systems installed from January 1, 2025, generally must use a refrigerant with a global warming potential below 700. R-410A is listed at 2,088 in the EPA's reference table, so it no longer qualifies for most new systems.

A rule the EPA finalized this year softened the transition. Published in the Federal Register on May 26, 2026, and effective July 27, 2026, it removes the installation deadline for R-410A systems whose specified components were all made or imported before January 1, 2025, so that remaining inventory can still be installed. The EPA also affirmed that a homeowner can replace a failed outdoor condensing unit instead of buying a whole new system, the same approach used during the R-22 phaseout, with one catch: replacing the indoor coil later counts as installing a new system. This guide explains what is allowed, what is not, and how to decide between repair and replacement.

What Is R-410A, and Why Is It Being Phased Down?

R-410A is a hydrofluorocarbon refrigerant blend that has been used in residential air conditioners and heat pumps. The EPA lists its 100-year global warming potential at 2,088, meaning a pound of it that leaks traps about 2,088 times as much heat over 100 years as a pound of carbon dioxide.

The American Innovation and Manufacturing Act, signed in December 2020, set a schedule to cut U.S. production and consumption of hydrofluorocarbons against a 2011 to 2013 baseline. A fire service handout from the Illinois Office of the State Fire Marshal summarizes the steps:

Years	Allowed share of baseline	Reduction
2024 to 2028	60%	40%
2029 to 2033	30%	70%
2034 to 2035	20%	80%
2036 and later	15%	85%

The phasedown limits how much new refrigerant can be produced and imported. It does not set a date when R-410A disappears.

Can Your R-410A System Still Be Repaired and Recharged?

Yes. The EPA's May 2026 rule explains that condensing units are one of five specified components that are not subject to the manufacture, import and sale restrictions, which allows for the continued servicing and maintenance of existing equipment.

Under 40 CFR 82.157, the federal leak repair requirements apply only to appliances holding 50 or more pounds of ozone-depleting refrigerant, such as R-22, and do not apply to appliances that contain only substitute refrigerants like R-410A. Even without a federal mandate, a leak means lost cooling and refrigerant you keep paying to replace. The guide to preventing AC refrigerant leaks covers warning signs.

Can You Still Buy a New R-410A Air Conditioner?

In some cases. Under 40 CFR 84.54(c)(1), new residential and light commercial AC and heat pump systems using a refrigerant with a global warming potential of 700 or more may still be installed where all specified components of the system were manufactured or imported before January 1, 2025.

The May 2026 rule removed the deadline that would have ended those installations. The EPA explained that removing the date allows the remaining inventory of R-410A equipment made or imported before 2025 to be installed. Variable refrigerant flow systems follow a separate schedule that started January 1, 2026.

Availability depends on what distributors still have on hand. A contractor can tell you whether a matched R-410A system is available for your home and how its efficiency compares with a newer system.

Can You Replace Just the Outdoor Unit?

Yes, under the EPA's current position. In the May 2026 rule, the EPA affirmed that by making no changes to the regulations, a homeowner can choose to replace a failed condensing unit rather than purchase a whole new system. The agency called this consistent with the policy it took during the R-22 phaseout.

There is a limit. Replacing the condensing unit without replacing the indoor coil is not treated as installing a new system. If the indoor coil is replaced later, that is considered a new system, and it cannot use a refrigerant above the 700 limit. The same applies in reverse if the coil is replaced first.

The EPA also noted comments that mismatched systems can mean lower efficiency. Ask your technician whether the new outdoor unit is rated to work with your existing coil before deciding.

What Refrigerants Replaced R-410A in New Systems?

Two replacements used in new residential systems are R-454B and R-32. The EPA's reference table lists R-454B at a global warming potential of 465 and R-32 at 675, both under the 700 limit. The Illinois State Fire Marshal handout classifies both as A2L refrigerants, meaning lower toxicity and lower flammability, while R-410A is A1, with no flame propagation. The same handout notes that safety standards including ASHRAE 15 and UL 60335-2-40 were revised to cover A2L equipment.

One detail on the numbers: the EPA's SNAP listing for residential air conditioning shows R-454B at 470 rather than 465. Both figures come from the same agency, and both sit well under the 700 limit.

The switch was not smooth. The EPA's 2026 rule records that R-454B was scarce in some regions in 2025, and that some contractors had trouble getting R-454B in the field to charge new units during installation.

Should You Repair or Replace an R-410A System?

The refrigerant alone does not decide it. Repair and recharge remain legal, and an outdoor unit can still be replaced on its own. The bigger questions are the system's age, how often it has needed refrigerant, and whether the indoor coil is near the end of its life, since a coil replacement would trigger the new system rules.

The guide to the typical lifespan of an air conditioner and the guide to repairing or replacing an old AC unit cover the rest of that decision.

FAQ

Is R-410A banned?

No. It cannot be used in most new residential systems installed since January 1, 2025, but existing systems can still be serviced and recharged, and pre-2025 inventory can still be installed.

Can I still get my AC recharged with R-410A?

Yes. The EPA's rules allow continued servicing and maintenance of existing equipment, including recharging.

Will R-410A become harder to find?

The AIM Act phasedown cuts allowed hydrofluorocarbon production and consumption to 60% of the baseline through 2028 and 30% from 2029 through 2033, so less new refrigerant will be made over time.

Can I install a new R-410A system in 2026?

Only if all specified components were manufactured or imported before January 1, 2025, under 40 CFR 84.54(c)(1) and the May 2026 rule.

What happens if my indoor coil fails after I replace the outdoor unit?

The EPA treats replacing the indoor coil after the condensing unit as installing a new system, which cannot use a refrigerant above a global warming potential of 700.

What refrigerant do new air conditioners use?

New residential systems use lower global warming potential refrigerants such as R-454B and R-32, both classified as A2L.

Van Bremen's Heat & Air Repairs and Replaces Air Conditioners

Van Bremen's Heat & Air offers full air conditioning install, repair and service from its office at 214 Stoystown Rd in Somerset, serving Somerset, Fayette, Cambria and Westmoreland Counties and Morgantown, WV. A technician can check your system's refrigerant type, find leaks, and explain whether repair or replacement fits your home. See the cooling services page and maintenance services page.

Visit Van Bremen's Heat & Air or call (814) 483-1735 today. Contact us for more information.