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Chemours Refrigerants

ISCEON™ 39TC™ refrigerant

» ISCEON™ refrigerants solutions in Europe 

ISCEON™ 39TC™ is a non-ozone-depleting HFC retrofit refrigerant for R-12 in centrifugal chillers.

» ISCEON™ 39TC™ Case Histories


R-423A; A1 Safety Classification




  • Centrifugal chillers designed for R-12 


  • Provides quick, cost-effective retrofit
  • Non-ozone-depleting HFC
  • Retrofit typically requires a single lubricant change to polyol ester (POE) without additional flushing
  • Avoids expensive engineering changes to existing chiller equipment
  • Enables cost-effective continued use of existing chiller equipment
  • Can be topped off during service without removing the entire refrigerant charge


  • Provides required cooling capacity and comparable energy efficiency vs. R-12
  • Similar discharge temperature and pressure vs. R-12

Phaseout Schedule 
ISCEON™ 39TC™ is a zero ozone-depleting substance (ODS) and, therefore, is not subject to phaseout under the Montreal Protocol regulations.


Lubricant Recommendation
For most systems, only one lubricant change to POE during retrofit is required.  ISCEON™ 39TC™ tolerates high residual levels of mineral oil in POE, and therefore, no system flushing is required after changing the original lubricant to POE. Refer to the ISCEON™ 39TC™ Retrofit Guidelines for more details.