Process and Commercial Refrigeration

Honeywell is the global leader in the development and manufacture of non-ozone depleting refrigerants for process and commercial refrigeration applications. We also offer a variety of HCFC-based interim solutions to make it easier to replace CFCs. Honeywell refrigeration products are often approved or recommended by equipment manufacturers.
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Replacing R-12

For replacing R-12, options include Genetron® 134a, Genetron® 409A, Genetron® MP39 (R-401A) and Genetron® MP66 (R-402A). Genetron 409A provides more cooling capacity than other R-12 replacements, and can be used in most systems to quickly replace R-12 while maintaining a mineral oil lubricant. For R-12 systems where the evaporator temperature is below -10°F, including transport refrigeration, Genetron MP66 may be the best solution.
When a non-ozone depleting (non-HCFC) solution is desired, Honeywell recommends retrofitting to Genetron 134a. Although retrofitting to R-134a requires replacing some or all of the mineral oil with lubricants soluble with HFC refrigerants, R-134a is an excellent match in performance to R-12 and is approved by most equipment manufacturers.

Replacing R-13 and R-503

Genetron® 23 offers capacity between that of R-13 and R-503, and a higher discharge temperature than R-12. R-508B is also available, and offers a capacity similar to R-503 with a lower discharge temperature.

Replacing R-502

For replacing R-502, Honeywell recommends Genetron® HP80 (R-402A) and Genetron® 408A for easy retrofits using alkylbenzene or polyol ester lubricants. In R-502 ice machines, Genetron® HP81 (R-402B) provides a higher discharge temperature than R-502 and allows for rapid harvest cycles in certain types of equipment.

Replacing R-22

Several options are available for replacing R-22, and trade-offs of equipment changes, capacity losses, and energy efficiency should be considered when selecting to best retrofit product. Genetron® 407C offers the closest capacity match to R-22, but can result in small efficiency losses. Although it allows for retrofitting with the fewest equipment changes, it has a moderate degree of glide and cannot be used in systems with flooded evaporators.
For most systems, Honeywell recommends Genetron 404A® or Genetron® AZ-50® (R-507) refrigerants. These products are similar in composition and performance. The key difference is that R-507 is an azeotrope that can be used in flooded evaporators, and has no glide and can be easily recycled or reclaimed without a resulting change in composition.

New Refrigeration Systems

Medium temperature refrigeration refers to applications where the desired product temperature is above +10°F. Low temperature refrigeration typically refers to applications where the desired product temperature is between -40°F and +10°F. In new equipment, Honeywell recommends the use of HFC refrigerants Genetron® 134a, Genetron® 404A or Genetron® AZ-50® (R-507) refrigerants. Although Genetron® 22 is a standard solution for some applications and can continue to be used in new systems for several more years, increasing regulatory requirements and eventual supply issues should be considered before selecting HCFC refrigerants for systems expected to have operating lifetimes longer than 10 years.

Specialty Refrigeration Products

Honeywell offers several specialty products to help solve unique design situations. Genetron® 124 is a medium-pressure refrigerant used in some chiller applications or cooling in situations with high ambient temperatures. Other products available for specialty applications include Genetron® 125 (R-125), Genetron® 23 (R-23), and Genetron® 245fa (R-245fa). Equipment manufacturers should contact Honeywell directly for help in identifying the right solution.