HS Code for Industrial Steam Boilers
The HS Code for industrial steam boilers is 840219. The MFN duty rate for importing to the US is 2.9%.
| HS Code (6-digit) | 840219 |
|---|---|
| US Duty Rate (MFN) | 2.9% |
| EU Duty Rate (MFN) | 2.7% |
| Chapter | 84 |
| Heading | 8402 |
| Last Updated | 2026-05 |
Description
Other vapour generating boilers, including hybrid boilers
HS Code 840219 covers industrial steam and vapour generating boilers with a US MFN duty rate of 2.9%.
Frequently Asked Questions
How does the construction material of an industrial steam boiler affect its classification under HTS 840219?
The material of construction, particularly the boiler shell, is critical. Boilers with shells made of cast iron are generally excluded from HTS 840219 and are instead classified elsewhere (e.g., 8402.10). Classification under 840219 typically requires the boiler shell to be constructed of steel or another alloy steel to qualify as an 'other vapour generating boiler'.
What specific customs inspection risks should importers of industrial steam boilers (HTS 840219) anticipate?
The primary risk is a detailed inspection to verify the boiler's pressure specifications and construction materials, as boilers operating above specific pressure thresholds or using certain alloys may be misclassified under different HTS subheadings (e.g., 8402.11 or 8402.20). Customs authorities frequently examine import documentation against the physical unit to ensure the declared use (industrial vs. central heating) and power output (kW or horsepower) are accurate, as these factors directly impact duty rates and antidumping/countervailing duty applicability.
What are the key additional costs and fees to consider when importing industrial steam boilers under HTS 840219?
Beyond the product cost and freight, you must account for a 2.5% U.S. Most Favored Nation (MFN) import duty. You are also likely to incur merchandise processing fees (MPF) and harbor maintenance fees (HMF) upon entry. Furthermore, boilers must comply with ASME construction codes, and verification of this, potentially requiring third-party certification, adds to the pre-import compliance cost.
Material Variants: Industrial Steam Boilers
The material of construction is critical for classifying industrial steam boilers under HTS 8402.19. Boilers constructed of stainless steel, alloy steel, or carbon steel all fall under this code, as the primary distinction is vapor production capacity (>45.5 kg/hr). However, a key variant involves boilers with electric heating elements integrated with non-electric heat sources; these are still classified here if the primary function is steam generation. For non-industrial, domestic hot water boilers made of materials like copper, see heading 8403.10.
Alternative & Similar Classifications
Industrial steam boilers under 840219 are often distinguished from other boiler types by their primary function and capacity. A closely related code is 8402.20 for super-heated water boilers, which generate hot water under pressure but not true steam. Units designed for central heating (even if producing some steam) may fall under 8403.10 for central heating boilers. Additionally, smaller, non-industrial steam generators or boilers for specific machinery may be classified elsewhere in heading 8402 based on their design and application (e.g., 8402.11 or 8402.12).
Related HS Codes
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