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If your outdoor unit was made before about 2010, R-22 is the most likely refrigerant in it. The EPA does not require you to replace an R-22 system, and it can still be serviced. What changed is price: no new R-22 has been produced or imported in the US since January 1, 2020, so everything on the market is reclaimed or pre-2020 stock. That is why an R-22 recharge often costs several times an R-410A one, and why a large R-22 leak is usually the point where replacement economics start to matter.
What is R-22?
R-22 is HCFC (single compound, not a blend). It is also sold and referred to as HCFC-22, Freon, Freon 22, chlorodifluoromethane. Its ASHRAE Standard 34 safety classification is A1 — low toxicity, non-flammable, and its global warming potential is about 1,810.
Ozone depletion potential: 0.055. It is an ozone-depleting substance, which is why it was regulated under the Montreal Protocol rather than the AIM Act.
What equipment uses it, and when was it common?
R-22 was common in residential equipment roughly 1960 to 2010. Production and import into the US ended January 1, 2020. Existing systems remain legal to own, operate, and service using reclaimed or pre-2020 stock.
Is it still used in new equipment?
No. New residential systems manufactured or imported from January 1, 2025 must use a refrigerant with a GWP under 700, and R-22 is above that limit.
Can existing systems still be serviced?
Yes. Existing R-22 systems can be serviced and recharged. Components used to repair existing systems are not restricted by the technology-transition rules, and there is no requirement for you to replace working equipment.
Is it compatible with other refrigerants?
Approved for use in R-22 equipment: yes. Approved for use in R-410A equipment: no.
R-22 systems can sometimes be retrofitted to an approved alternative (R-407C, R-438A, R-422B, R-417A). A retrofit is a procedure, not a swap: it involves recovering the old charge, and most alternatives use POE oil rather than the mineral oil in an R-22 system. Whether a retrofit is worth doing is an economic question, not just a technical one.
Never assume two refrigerants are interchangeable because their pressures or performance look similar. Compatibility is a property of your specific equipment, established by its manufacturer, not a property of the refrigerant alone.
What does it cost?
Installed by a contractor, R-22 typically runs $150 to $300 per pound, with $220 a common midpoint. A wholesale cylinder runs roughly $25 to $60 per pound, and the gap between those two figures is the part that gets misread as gouging.
Why does service cost more than the refrigerant?
R-22 is a fixed, shrinking supply. Reclaimed refrigerant has to be recovered, cleaned to virgin specification by an EPA-certified reclaimer, and re-sold, and none of that gets cheaper over time.
Beyond that, every refrigerant invoice carries a licensed technician’s time, EPA Section 608 certification, recovery and evacuation equipment, refrigerant carried as truck stock, insurance, and a warranty on the work. The quote checker breaks a real invoice into those parts.
How much might a residential system contain?
As a planning estimate, a typical residential system holds roughly 2 to 4 pounds per ton of cooling capacity — about 6 to 12 pounds for a common 3-ton system. That is an estimate, not a specification: actual charge depends on the indoor coil match and the line set. Estimate your own system.
What “banned” does and does not mean
This is the single most misunderstood thing about R-22, and it gets used to sell equipment.
What is banned: making or importing new R-22 in the United States, since January 1, 2020.
What is not banned: owning an R-22 system, running it, having it serviced, or having it recharged. The EPA states plainly that it does not require homeowners to replace existing equipment.
The real constraint is arithmetic, not law. Supply is finite and comes only from reclaimed refrigerant and pre-2020 stock, which is why R-22 commonly runs several times R-410A pricing per pound. A small repair on a healthy R-22 system can still be entirely sensible. A large recharge plus a coil is where the numbers usually stop working.
Your options if your R-22 system leaks
- Repair the leak and recharge with R-22. Fine when the leak is cheap to fix and the system is otherwise healthy.
- Retrofit to an approved alternative. R-407C, R-438A, R-422B, and R-417A are all used this way. A retrofit is a procedure, not a swap — recovery, usually an oil change, and often some capacity loss. What a retrofit actually involves.
- Replace the system. Often the right call on equipment this old, but it should be a decision made on numbers rather than on a sales line about a ban.
What should you ask your technician?
- Can you show me where R-22 is listed on my equipment?
- What is the expected total charge for this model?
- How much are you adding today, and was the system weighed?
- Where do you think it leaked from, and did you perform a leak search?
- Is the leaking component under manufacturer warranty?
All 20 questions, grouped by when to ask them →
When does repair versus replace become the real question?
Sooner than for other refrigerants, because R-22 pricing compounds every future repair as well as this one. A cheap fix on a healthy system can still be worth it; a large recharge plus a major component usually is not.
Work through the repair-or-replace decision →
Where this site stops
We will help you understand your equipment, read your invoice, and ask better questions. We will not tell you how to buy refrigerant, connect gauges, or charge a system. Opening a sealed refrigerant circuit requires EPA Section 608 certification under federal law, and there is no homeowner exemption. Venting refrigerant is separately illegal. This is genuinely a licensed-technician job, and the reason is legal as much as technical.
Related: Refrigerant hub · Find my refrigerant · Refrigerant timeline · AC repair vs replace
Frequently asked questions
Is R-22 illegal to use in 2026?
No. Producing or importing new R-22 in the US has been banned since January 1, 2020, but using, servicing, and recharging existing R-22 equipment remains legal. The EPA does not require homeowners to replace R-22 systems.
Why is R-22 so expensive now?
Supply is finite. Every pound available comes from reclaimed refrigerant or pre-2020 production, and reclamation requires recovery and cleaning to virgin specification by an EPA-certified reclaimer. Prices commonly run several times R-410A per pound.
Can I put R-410A in my R-22 system?
No. R-410A operates at substantially higher pressures and uses a different oil. It requires equipment designed for it. Approved R-22 alternatives exist, but they are retrofits with their own procedures, not drop-in swaps.
Sources & verification
✓ Verified against a manufacturer, regulator, or standards source
- GWP values computed from the component exchange values in Appendix A to 40 CFR Part 84, the AIM Act regulated-substance list, rather than copied from secondary sources — epa.gov
- EPA, “Technology Transitions HFC Restrictions by Sector” — epa.gov
- EPA, “Homeowners and Consumers: Frequently Asked Questions” (HCFC phaseout) — epa.gov
⚠ Provisional — market-survey estimate, not a manufacturer or regulator citation
- Cost ranges are aggregated from HVAC cost-guide market surveys, collected 2026-08-31. They are not manufacturer or regulator figures, and regional pricing varies widely.
Last reviewed 2026-08-31. How we verify what we publish →
