As the phase-out of R454B refrigerant approaches in 2024, contractors and facility owners must be aware of their local and state regulations regarding the use of this mildly flammable A2L gas. If refrigerant detection or mitigation equipment is required, it will be the responsibility of the installer or owner to provide it. Additionally, components suitable for use with some of the new low-GWP refrigerants may not be readily available for implementation and product testing. Fortunately, there are several alternatives to R454B that can be used in its place.
Propane, a class 3 flammable hydrocarbon refrigerant, is already on the SNAP list for use in household refrigerators and freezers and, under the new regulations, is also considered acceptable in new commercial ice machines, new water coolers and new very low temperature refrigeration equipment. The HFO R1234yf refrigerant, designed as a replacement for R134a in automotive air conditioning systems, has been expanded for use in newly manufactured medium passenger vehicles, heavy-duty trucks and full HD vans. It is important to note that while some states may allow the use of R454B refrigerant, it is the responsibility of the contractor or facility owner to ensure that the refrigerant used complies with their respective state and local codes. To ensure compliance with regulations and safety standards, contractors and facility owners should consider using propane or HFO R1234yf as an alternative to R454B. When selecting a refrigerant alternative to R454B, it is important to consider the safety requirements of the particular application. Propane is an acceptable alternative to R454B as it is already on the SNAP list for use in household refrigerators and freezers.
The HFO R1234yf refrigerant is also an option as it has been expanded for use in newly manufactured medium passenger vehicles, heavy-duty trucks and full HD vans.
