R-454C Mildly Flammable Refrigerant from Canada
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 — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
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