3827.90.90.00/R-454C Mildly Flammable Refrigerant/Mexico

R-454C Mildly Flammable Refrigerant from Mexico

A2L blend of R-32 and HFO-1234yf for new residential heat pump systems. Classified under HTS 3827.90.90.00 as other halogenated mixtures with mild flammability (A2L safety class). Meets latest global standards.

Duty Rate — Mexico → United States

13.7%

Rate breakdown

9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter

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Import Tips

• Include A2L flammability mitigation device requirements documentation

• Train personnel on UL 60335-2-40 safety standards for A2L refrigerants

• Monitor HFO stability as it degrades under certain storage conditions