Boiler Feedwater Preheater
A shell-and-tube preheater that uses extracted steam to raise feedwater temperature before it enters the boiler, reducing thermal shock and improving cycle efficiency. This feedwater preheater is auxiliary plant for boilers. It is classified under tariff item 8404.10.00 as auxiliary plant for use with boilers.
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 |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the preheater is a general-purpose heat exchanger not specifically for boilers
Heat exchange units are classified under heading 84.19.
If the preheater is supplied as an integral part of a boiler system
Parts of boilers are classified under heading 84.02.
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 preheater as auxiliary plant for boilers and provide technical specifications
• Ensure the equipment complies with Canadian pressure vessel regulations
• Check if the preheater qualifies for duty-free treatment under trade agreements
Related Products under Tariff item 8404.10.00
Boiler Air Preheater
> A rotary or tubular device that preheats combustion air using heat recovered from boiler flue gas, reducing fuel consumption. It is designed for direct integration with boilers of heading 84.02 or 84.03 and qualifies as auxiliary plant under tariff item 8404.10.00.
Boiler Draft Fan Silencer
An acoustic silencer designed for induced draft fans in boiler systems, reducing noise while maintaining required draft pressure differentials. This silencer is auxiliary plant for boilers. It is classified under tariff item 8404.10.00 as auxiliary plant for use with boilers of heading 84.02 or 84.03.
Boiler Economizer
> A heat recovery device installed in the flue gas path of steam boilers (headings 84.02 or 84.03) to preheat feedwater using residual heat from exhaust gases. It improves overall boiler efficiency and is explicitly covered as auxiliary plant under tariff item 8404.10.00.
Boiler Economizer Bypass Damper
A heavy-duty damper system that controls flue gas flow around economizers for temperature regulation, critical for safe operation during startup and load changes. This bypass damper is auxiliary plant for boilers. It is classified under tariff item 8404.10.00 as auxiliary plant for use with boilers.
Boiler Superheater
> A component that heats steam beyond its saturation point after leaving the boiler drum, increasing energy content for turbine use in power generation. It is designed for use with boilers of heading 84.02 or 84.03 and qualifies as auxiliary plant under tariff item 8404.10.00.
Cast Iron Boiler Economizer
> A cast iron economizer designed to recover waste heat from boiler flue gases to preheat feedwater, improving overall boiler efficiency. It is classified under tariff item 8404.10.00 as auxiliary plant specifically for use with boilers of heading 84.02 or 84.03.