For nearly a decade, the use of R-290 (refrigerant-grade propane) has experienced a gradual adoption increase among U.S. foodservice applications. From ice machines to under-counter, reach-in coolers, R-290 systems have become viable alternatives for restaurant operators seeking to lower their carbon footprints and/or to meet sustainability objectives.
Classified as an A3 (highly flammable) refrigerant, R-290 comes with charge limit restrictions and safety caveats that may require the approval of local authorities having jurisdiction (AHJ), such as building and fire code officials. But due to recent safety standard updates by the International Electrotechnical Commission (IEC), the rules governing the safe use of A3 and A2L (mildly flammable) refrigerants are evolving to enable an expanded range of applications and greater refrigeration capacities.