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Which DuPont™ ISCEON® refrigerant is right for you?
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Which ISCEON® Product is Right for You?

Use the table below* as a quick reference for selecting the R-22 replacement refrigerant to meet your needs.


   DuPont™ ISCEON®
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® MO292 		 ISCEON® MO99™ 1
ISCEON® MO292		 ISCEON® MO99™ 1
MP39, MP66, R-409A ISCEON® MO49Plus™3 ISCEON® MO49Plus™3 ISCEON® MO49Plus™2
HP80, HP81, R-408A ISCEON® MO794 ISCEON® MO794  
(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.

* North American HCFC General Replacement Guide for Existing Equipment
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