Stainless Steel Heat Exchanger Coil for Instantaneous Water Heaters from Mexico
This coiled stainless steel tube assembly transfers heat from combustion gases to water in tankless instantaneous water heaters. It is a core component classified under HTS 8419.90.10.00 as a part specifically designed for non-electric instantaneous water heaters. The part enables rapid heating without storage, distinguishing it from domestic heater components.
Duty Rate — Mexico → United States
25%
Rate breakdown
9903.82.0925%Except as provided for in headings 9903.82.16, 9903.82.20–9903.82.26 and 9903.85.68, articles of copper and derivative aluminum and steel articles, as provided for in subdivisions (c)(vi)–(viii) and (xi) of U.S. note 16 to this subchapter
9903.05.900%Articles of aluminum, of steel or of copper or derivative aluminum or steel articles; passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; parts of passenger vehicles (sedans, sport utility vehicles, crossover utility vehicles, minivans and cargo vans) and light trucks; medium- and heavy-duty vehicles; parts of medium- and heavy-duty vehicles; wood products; patented pharmaceutical articles; and semiconductor articles, as provided in subdivision (f) of U.S. note 52 to this subchapter
Import Tips
• Verify the part is exclusively for non-electric instantaneous/storage water heaters via manufacturer specs to avoid reclassification
• Include detailed engineering drawings and OEM compatibility certificates in documentation to prove tariff classification
• Watch for undervaluation pitfalls; provide cost breakdowns separating heat exchanger from full heater assemblies