Reference Source

R-422B

For R-422B, replaces is R-22; trade name(s) is Freon™ NU-22B™; ashrae safety class is A1; gwp is 2525 (2289); compatible lubricant is MO, AB, POE, verified against its source on 2026-08-11.

Refrigerant
R-422B verified
Replaces
R-22 verified
Trade name(s)
Freon™ NU-22B™ verified
ASHRAE safety class
A1 verified
GWP
2525 (2289) verified
Compatible lubricant
MO, AB, POE verified
Sourcechemours.com
Verified
Review by
DatasetHVAC refrigerant replacements: retrofit compatibility, safety class, GWP and lubricant

What the source says

R-22 Replacements for Great choice in systems where changing to POE oil is not practical, Freon™ NU-22B™ R-422B A1 2525 (2289) MO, AB, POE A/C, Heat Pumps elastomeric seals require replacement.

chemours.com, retrieved 2026-08-11

What epa.gov says

R-22 Retrofit Blends R-404A R-407A R-407C R-407F R-417A R-417B R-421A R-421B R-422A R-422B R-422C R-422D R-424A R-427A R-428A R-434A R-438A R-507A

epa.gov, retrieved 2026-08-11

Sources

Last verified against source: . Due for re-check by . This page as Markdown · OKF bundle · full dataset as JSON.