Arkema recommends Forane® 407C, Forane® 407A, and Forane® 427A (R427A) - The EASY RETROFIT™ as R-22 retrofit options for many R-22 applications. All are SNAP approved.
When reviewing the various retrofit considerations – GWP, capacity, efficiency, operating pressures, flow rates – you will find that these products represent some of the closest overall performance matches to R-22 available on the market today. R-407C has the closest capacity to R-22 for air conditioning, while R-407A offers performance similar to R-22 in supermarket refrigeration. R427A is a hybrid blend that mirrors R-22's operating pressures, allowing it to be used in a wider range of systems.
Table 1: Retrofit solutions
|Forane® 22||Forane® 407C||Forane® 427A||Forane® 407A|
|Primary usage||All R-22 systems||Air conditioning||
|Application range||All R-22 systems||AC → MT (DX) retrofit||AC → LT (DX) retrofit only||MT → LT (DX) new & retrofit|
|Composition (weight %)||
|GWP (100 year, AR5)||1,760||1,624||2,024||1,923|
|Normal boiling point (ºF)||-41||-47||-45||-49|
|Critical temperature (ºF)||205||187||186||180|
|Capacity (relative to R-22)||-||Similar (AC)||Slightly lower||Similar (MT → LT)|
|Flow rates (relative to R-22)||-||Similar||Similar||Slightly higher|
|Recommended lubricant||MO or AB||POE||POE, MO*, AB*||POE|
|Charge ratio (relative to R-22)||-||90-95%||95-100%||95-100%|
|Discharge pressure (relative to R-22)||-||15-25 psi higher||0-10 psi higher||25-35 psi higher|
|Discharge temperature (relative to R-22)||-||10-15 ºF lower||20-40 ºF lower||20-35 ºF lower|
* A lubricant change may not be required, but POE is always recommended for optimal performance. See retrofit guidelines at www.forane-us.com before any refrigerant retrofit; consult your OEM for complete warranty considerations.