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Which DuPont™ ISCEON® refrigerant is right for you?

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


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

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

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

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

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

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

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

(2) ISCEON® MO49Plus™ has comparable capacity and slightly lower efficiency than MP39 and R-409A. ISCEON® 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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