Refrigerant relief: A2L line sets and fire-rated shafts–the new code fix contractors need to know
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The International Mechanical Code (IMC) created and resolved a challenge facing HVACR professionals working in multifamily buildings. In 2024, the IMC effectively prohibited A2L refrigerant line sets from routing through a ventilated fire-rated shaft.
David C. Bixby has been active in HVAC industry codes and standards for 35 years and is currently secretary for the ACCA Codes Committee.
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Posted In: A2Ls, Aside, Refrigerants
