Boiler Waterside Economizer
A boiler waterside economizer preheats boiler feedwater using residual flue gas heat, improving overall efficiency of steam generating boilers. This product is recognized as a boiler part under tariff item 8402.90.00 due to its integral role in vapor generating systems.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the economizer is a separate heat exchange unit not specifically for boilers
Heat exchange units are classified under heading 84.19 unless they are parts of boilers.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Classify the waterside economizer under 8402.90.00 as a boiler part
• Provide evidence that the economizer is designed to be installed in a boiler system
• Note that if the economizer is a standalone heat exchanger, it may be classified under heading 84.19
Related Products under Tariff item 8402.90.00
Boiler Economizer Module
A boiler economizer module is a heat recovery module installed in boiler exhaust stacks to preheat feedwater using waste gases from steam generation. This performance-enhancing part of vapor boilers falls under tariff item 8402.90.00.
Boiler Expansion Joint
A boiler expansion joint is a flexible connection, typically bellows-type or refractory-lined slip, that accommodates thermal expansion and contraction between boiler pressure parts and structural steel during steam generation cycles. This product is a dedicated part of steam or other vapour generating boilers, falling under tariff item 8402.90.00 as a component of the boiler system.
Boiler Feedwater Pump Impeller
This specialized impeller is designed for multistage boiler feedwater pumps, delivering high-pressure water to steam boilers. While pumps themselves fall under heading 84.13, this impeller is a dedicated part of the boiler system and is classified under tariff item 8402.90.00 as a part of steam generating boilers.
Boiler Fire Tube Replacement
A replacement fire tube designed for insertion into industrial steam generating boilers to facilitate heat transfer from combustion gases to water. It falls under tariff item 8402.90.00 as a specific part of vapour generating boilers.
Boiler Firetube Replacement
A boiler firetube is a critical heat exchanger tube used in fire-tube boilers to transfer heat from combustion gases to water, generating steam. This replacement tube is a dedicated part of steam generating boilers and falls under tariff item 8402.90.00.
Boiler Handhole Door Assembly
A small access door assembly for inspecting boiler tubes through hand-sized openings in drum walls. It is classified under tariff item 8402.90.00 for water-tube boiler maintenance parts.