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R-422B (NU-22) Refrigerant 25 LB
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R-422B (NU-22BTM) is a refrigerant that can be used to replace R-22 in air conditioning (AC) systems. It's a blend of R-22 and other refrigerants that has similar operating characteristics and pressures to R-22. R-422B is non-ozone depleting, nonflammable, and has an ASHRAE A1 classification
When retrofitting a system to R-422B, you should:
- Recover the remaining R-22
- Add a filter drier to the system
- Replace the filter drier with the same type currently in use if one already exists