R438A Refrigerant

R438A refrigerant is replaceable in direct expansion air conditioning and refrigeration systemsR22the multifunctionalrefrigerant, used in medium and low temperature commercial refrigeration systems such as household and commercial air conditioners, catering refrigeration, supermarket display cabinets, and food storage and processing. The replacement process does not require changes to the expansion valve and lines, replacement of refrigerant oil, direct replenishment, and drainage of the filled refrigerant.