Why Is There a Shortage of the New Refrigerant (R454B)?
The HVAC industry has had many new regulations recently and a short review of this history might help understand the current situation. In 2019, manufacturers were no longer able to produce residential furnaces that had traditional AC powered PSC blower motors, favoring instead the more efficient DC powered ones. In 2020 we saw the end of production of R22 refrigerant and the beginning of the reduction in production of R410A. The M1 Efficiency Increase came in 2023, and now in 2025 we have begun the A2L refrigerant transition. This transition marks the end of production of all residential R410A equipment....
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