R22 refrigerant was banned from new production and import in the United States on January 1, 2020. That end date completed a phaseout that began in earnest on January 1, 2010, when it became illegal to manufacture or install new air conditioners and heat pumps designed to run on R22. Existing systems can still be used legally, but every pound of R22 available today comes from pre-2020 stockpiles or from refrigerant recovered and reclaimed out of old equipment.
Why R22 Was Phased Out
R22 is a hydrochlorofluorocarbon (HCFC). When it leaks, the chlorine in the molecule reaches the upper atmosphere and breaks down ozone, the layer that shields the surface from ultraviolet radiation. Thinning that layer raises rates of skin cancer, cataracts, and damage to crops and marine life.
The 1987 Montreal Protocol committed nearly every country to phasing out ozone-depleting substances on a shared schedule.1UN Environment Programme. About Montreal Protocol The United States carried out its share through Title VI of the Clean Air Act, which gave the EPA authority to set the specific deadlines and production caps.2Office of the Law Revision Counsel. 42 USC Chapter 85, Subchapter VI
The Phaseout Timeline
The ban didn’t happen overnight. The EPA stepped it down in stages:
- Early 2000s: Annual caps began reducing how much R22 producers could make and importers could bring in.
- January 1, 2010: Manufacturing and installing new equipment designed for R22 became illegal. R22 itself could still be produced, but only to service systems already in service.3U.S. Environmental Protection Agency. Phasing Out HCFC Refrigerants To Protect The Ozone Layer
- January 1, 2020: All remaining production and import ended. From this date on, the only legal supply is refrigerant made before the cutoff or recovered and reclaimed from old equipment.4Environmental Protection Agency. Residential Air Conditioning and the Phaseout of HCFC-22 – What You Need to Know
The caps dropped sharply between those dates. In 2014, U.S. producers were still allowed roughly 51 million pounds of R22. By 2020, the cap was zero.3U.S. Environmental Protection Agency. Phasing Out HCFC Refrigerants To Protect The Ozone Layer
Can You Still Use an R22 System?
Yes. Owning and running an R22 air conditioner or heat pump is legal, and no one is required to replace working equipment. The catch shows up when the system leaks or needs a recharge. With no new R22 in the pipeline, the reclaimed supply keeps shrinking and prices keep climbing. Installed costs commonly run $100 to $250 per pound, and some suppliers are quoting higher heading into the 2026 cooling season. A residential recharge typically uses several pounds, so a single repair can easily reach several thousand dollars.
That price shifts the math on repairs. A $1,500 recharge on a 15- or 20-year-old system often loses to putting the same money toward a replacement. Most owners end up switching for that reason alone, not because the law forces the change.
Retrofit Refrigerants
Some owners look at “drop-in” or retrofit refrigerants before giving up on the equipment. The EPA’s Significant New Alternatives Policy (SNAP) program lists approved substitutes for residential air conditioning, including blends like R-407C and NU-22.5U.S. EPA. Substitutes in Residential and Light Commercial Air Conditioning and Heat Pumps
“Drop-in” is a generous label. Most retrofits require flushing the original mineral oil, replacing it with a compatible lubricant, adjusting the expansion valve, and recalibrating the charge. Performance usually falls off compared to running on the refrigerant the system was engineered for. Propane (R-290) is specifically listed as unacceptable for retrofitting residential split systems because of its flammability.5U.S. EPA. Substitutes in Residential and Light Commercial Air Conditioning and Heat Pumps
Handling Rules You Can’t Ignore
Section 608 of the Clean Air Act makes it illegal to intentionally release R22 into the atmosphere during service, repair, or disposal.6US EPA. Stationary Refrigeration – Prohibition on Venting Refrigerants Anyone working on the equipment must hold an EPA Section 608 technician certification.7US EPA. Section 608 Technician Certification Requirements Recovered R22 cannot be resold unless it has been reclaimed by an EPA-certified reclaimer. In practical terms, a homeowner cannot legally buy R22 and top off the system without a certified technician. Civil penalties under the Clean Air Act reach into six figures per day of violation, and criminal charges are possible for knowing violations.8Federal Register. Civil Monetary Penalty Inflation Adjustment
If You’re Replacing the System, Know What Comes Next
Homeowners shopping for a replacement in 2026 should know that R-410A, the refrigerant that replaced R22 in new systems after 2010, is itself now being phased down. R-410A doesn’t harm the ozone layer, but it has a global warming potential (GWP) of 2,088, meaning each pound released traps as much heat as 2,088 pounds of carbon dioxide.9US EPA. Technology Transitions GWP Reference Table
The American Innovation and Manufacturing (AIM) Act, codified at 42 U.S.C. ยง 7675, directs the EPA to phase down hydrofluorocarbons like R-410A. Production and consumption are capped at 60 percent of historic baseline for 2024 through 2028, tightening to 15 percent by 2036.10U.S. Environmental Protection Agency. Frequent Questions on the Phasedown of Hydrofluorocarbons The EPA also set a GWP limit of 700 for refrigerants in new residential and light commercial air conditioning. Equipment manufactured or imported after January 1, 2025, must use a refrigerant at or below that threshold, and the installation compliance date for new systems was January 1, 2026.11US EPA. Technology Transitions HFC Restrictions by Sector Because R-410A’s GWP far exceeds 700, new R-410A systems can no longer be installed in homes.
Replacement systems in 2026 use next-generation refrigerants such as R-454B (GWP around 466) or R-32 (GWP around 675). Both carry an ASHRAE A2L safety classification: low toxicity, mildly flammable with a very slow flame speed.12ASHRAE. Update on New Refrigerants Designations and Safety Classifications That means your installer needs training specific to A2L equipment, and the equipment itself is built differently, including required leak sensors on many models. Anyone replacing an R22 system today is skipping straight past R-410A into that new generation.