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Which ISCEON™ refrigerant is right for you?

Quick Reference for selecting the R-22 replacement refrigerant to meet your needs


   Chemours
HFC Retrofit Options for Direct Expansion Systems
HCFC Refrigerant Being Phased Out Low-Temp Refrigeration Medium-Temp Refrigeration
Air Conditioning
R-22 Opteon™ XP40 (R-449A)
Opteon™ XP44 (R-452A)
Freon™ MO99 (1)
Freon™ MO29 (2) 
Suva™ 407A 
Opteon™ XP40 (R-449A)
Opteon™ XP44 (R-452A)
Freon™ MO99  (1)
Freon™ MO29 (2)
Suva™ 407A 
Suva™ 407C 
Freon™ MO99 (1) 
Suva™ 407C 
MP39, MP66, R-409A Freon™ MO49Plus (3) Freon™ MO49Plus (3) Freon™ MO49Plus (2)
HP80, HP81, R-408A Freon™ MO79 (4) Freon™ MO79 (4)  
(1) Freon™ MO99 combines R-22 pressure-enthalpy characteristics with mineral oil compatibility; comparable efficiency and slightly lower capacity versus R-22; no TXV change.

(2) Freon™ MO29 has higher efficiency and capacity versus R-22; mineral oil compatible; TXV changes not likely; engineering assessment recommended.

(3) Freon™ MO49Plus has comparable efficiency and capacity versus MP39 and R-409A; Freon™ MO49Plus has comparable efficiency and lower capacity versus MP66; mineral oil compatible; TXV changes not likely.

(4) Freon™ MO79 has comparable capacity and efficiency versus R-502; no TXV change; no capacity assessment or pressure rating check required.
(1) Freon™ MO99 combines R-22 pressure-enthalpy characteristics with mineral oil compatibility; comparable efficiency and slightly lower capacity versus R-22; no TXV change.

(2) Freon™ MO29 has comparable efficiency and lower capacity versus R-22; mineral oil compatible; TXV changes not likely; engineering assessment recommended.

(3) Freon™ MO49Plus has comparable efficiency and capacity versus MP39 and R-409A; Freon™ MO49Plus has comparable efficiency and lower capacity versus MP66; mineral oil compatible; TXV changes not likely.

(4) Freon™ MO79 has comparable capacity and lower efficiency versus R-502; mineral oil compatible; TXV change, condenser capacity assessment and pressure rating check required.
(1) Freon™ MO99 combines R-22 pressure-enthalpy characteristics with mineral oil compatibility; comparable efficiency and slightly lower capacity versus R-22; no TXV change.

(2) Freon™ MO49Plus has comparable capacity and slightly lower efficiency than MP39 and R-409A. Freon™ MO49Plus has lower capacity and efficiency versus MP66; mineral oil compatible; TXV changes not likely.

[Printer-friendly version of the North American HCFC General Replacement Guide for Existing Equipment]

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