Stainless Steel Heat Exchanger Coil for Instantaneous Water Heaters from China
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 — China → United States
35%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [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