HBFC-133a Refrigerant Transition Blend from Mexico
Temporary refrigerant mixture containing HBFC-133a (CHFBrCH2F) for legacy chiller systems during phase-out transitions. Falls under HTS 3827.12.00.00 as an HBFC-containing mixture of halogenated propane derivatives. Primarily used in industrial refrigeration retrofits.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Secure essential-use exemption from UNEP Montreal Protocol for any HBFC refrigerant imports post-1996 ban
• Provide equipment compatibility certification showing no CFC/HFC alternatives exist for specific application