Boiler Air Preheater from Mexico
Rotary or tubular device that preheats combustion air using boiler flue gas heat, reducing fuel consumption. Classified as auxiliary plant under HTS 8404.10.00 for direct use with 8402/8403 boilers. Regenerative designs common for large utility boilers.
Duty Rate — Mexico → United States
13.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Include airflow/heat transfer calculations calibrated to boiler capacity ratings
• Specify basket or plate materials resistant to acid dew point corrosion
• Avoid general fan heater classification by documenting flue gas duct integration