Refrigerant Replacement Finder
Pick the refrigerant you are moving away from and see the compliant lower Global Warming Potential (GWP) replacement, how far the GWP drops, and the safety class to plan for. Covers R-410A, R-404A, R-22, R-134a and more.
What are you replacing?
R-410A (phasing out, GWP 2,088) — compliant replacements are:
R-32
HFC · single component
- UK F-Gas
- Below the 750 GWP new-split threshold and the default gas for new residential splits. As an A2L it needs A2L-rated tooling, leak detection and charge-limit checks.
- Typical use
- Residential split AC & heat pumps
- ODP
- 0
GWP = Global Warming Potential (100-year, CO₂ = 1) · ODP = Ozone Depletion Potential · safety class per ASHRAE Standard 34.
R-454B
HFO/HFC blend
- UK F-Gas
- A low-GWP A2L blend of R-32 and R-1234yf, well below the 750 threshold. Increasingly specified for new split AC and heat pumps.
- Typical use
- Residential/commercial split AC, heat pumps
- ODP
- 0
GWP = Global Warming Potential (100-year, CO₂ = 1) · ODP = Ozone Depletion Potential · safety class per ASHRAE Standard 34.
A2L replacements are mildly flammable (ASHRAE Standard 34). Fitting them needs A2L-rated tools and leak detection, and a charge-limit check for the room — the calculation is not the same as for the R-410A they replace.
Frequently asked questions
What can I replace R-507A with?
R-449A and R-448A. R-449A has a GWP of 1,397 — 65% lower than R-507A; R-448A has a GWP of 1,387 — 65% lower than R-507A. Check the safety class before fitting: an A2L option is mildly flammable and needs A2L-rated tools, leak detection and a charge-limit check.
What can I replace R-404A with?
R-449A and R-448A and R-744. R-449A has a GWP of 1,397 — 64% lower than R-404A; R-448A has a GWP of 1,387 — 65% lower than R-404A; R-744 has a GWP of 1 — 100% lower than R-404A. Check the safety class before fitting: an A2L option is mildly flammable and needs A2L-rated tools, leak detection and a charge-limit check.
What can I replace R-410A with?
R-32 and R-454B. R-32 has a GWP of 675 — 68% lower than R-410A; R-454B has a GWP of 466 — 78% lower than R-410A. Check the safety class before fitting: an A2L option is mildly flammable and needs A2L-rated tools, leak detection and a charge-limit check.
What can I replace R-22 with?
R-407C and R-449A. R-407C has a GWP of 1,774 — 2% lower than R-22; R-449A has a GWP of 1,397 — 23% lower than R-22. Check the safety class before fitting: an A2L option is mildly flammable and needs A2L-rated tools, leak detection and a charge-limit check.