Choosing Alternative Refrigerants

Retrofitting away from HCFCs to non-ozone depleting, cost-effective alternative refrigerants? Refer to our Refrigerant Selection Process, which includes important factors to consider as part of your process toward identifying the best alternative refrigerant for your business needs. Included are retrofit checklist, alternative refrigerant capacity, and energy efficiency options relative to your system requirements.

Guidelines Updated

Refer to Emerson Technologies Changeover Guidelines, which now include R-22 to DuPont™ ISCEON® MO29 (R-422D) and ISCEON® MO79 (R-422A).

Ozone Depletion, Climate Change and Refrigerants, presented by Dr. Mack McFarland, leading atmospheric scientist, DuPont

A scientific consensus on the contribution of CFCs, HCFCs and other compounds to ozone depletion led to international agreements and national regulations that began impacting the air conditioning and refrigeration industries in 1989. Those impacts continue and will intensify over the next decade with increasing restrictions on the use of HCFCs.
» Learn More
» View Dr. McFarland's Webinar

Alternative Refrigerant Options

• Refrigeration & Air Conditioning
• U.S. R-22 Outlook: The time to act is now to transition from R-22
• General Replacement Guide

Refrigerant Selection Process

• Process Overview

1. Gather Basic Data on Current System
   
   
2. Compressor Capacity Check
   
   • Refrigerant Capacity vs. R-22 Low & Medium Temperature
     
     
3. Energy Performance
   • Refrigerant Energy Efficiency vs. R-22 Low & Medium Temperature
     
     
4. Retrofit Cost
   • Mineral Oil Miscibility
   • System Changes (TXV, etc.)
     
     
5. Other Considerations (GWP, Availability, Reclaim)

General Retrofit Procedures

• Retrofit Overview
• System Data Sheet

Oil Guide

• Copeland's Changeover Guidelines from
  R-22 to DuPont™ ISCEON® MO29 (R-422D) and DuPont™ ISCEON® MO79 (R-422A)
  
• Lubricant Selection Guide

Refrigerant Availability

• DuPont Refrigerant Distributors

Case Study

• Sealand Mechanical's success with supermarket conversions to DuPont™ ISCEON® MO29 carries over to the Edison Chouest Offshore Fleet.
  
• Pathmark Chooses DuPont™ ISCEON® MO29 for their store remodels.
  
• Highlights of successful retrofits to DuPont™ ISCEON®
  

Testimonials

Pathmark chooses DuPont™ ISCEON® MO29 for their store remodels. » Read the case study

• Conn Leahy, Manager, Mechanical Systems at Pathmark Stores, Inc.
  "No oil change is a significant factor; that you don't have to change the valves is a major plus. It's so easy--a no-brainer."
  
• Bob Isola, HVACR Contractor, AAA Refrigeration Systems
  "This was as close to a drop-in as you can get. This was probably the biggest benefit."
  

Sealand Mechanical's success with supermarket conversions to ISCEON® MO29 carries over to the Edison Chouest Offshore Fleet. » Read the case study

• Sam Sanderson, Sealand Mechanical, Houma, LA
  "The beauty of ISCEON® MO29 is that you don't have to change the oil and very rarely have to change the TXV."