Economizer Heat Exchanger Module
A heat recovery device installed in boiler flues to preheat feedwater using waste flue gases, classified under HTS 8404.10.0050 as auxiliary plant for boilers of heading 8402 or 8403. It enhances boiler efficiency by recovering heat that would otherwise be lost.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If integral to the boiler assembly
Parts specifically designed for boilers of 8402/8403 are classified as boiler parts rather than auxiliary plant.
If for use in heat recovery systems outside boiler applications
Heat exchangers not auxiliary to boilers fall under machinery for heat exchange in heading 8419.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Verify compatibility with specific boiler models under headings 8402/8403 via technical specs to ensure proper classification
• Include detailed engineering drawings and material certificates to avoid misclassification as boiler parts under 8403.90
Related Products under HTS 8404.10.00.50
Boiler Draft Fan Silencer
Acoustic silencer for induced draft fans in boiler systems, under HTS 8404.10.0050 as auxiliary plant. Reduces noise while maintaining required draft pressure differentials.
Deaerator Spray Valve Assembly
Specialized valve tray assembly for steam deaerators removing dissolved oxygen from boiler feedwater, HTS 8404.10.0050 auxiliary. Critical for corrosion prevention in steam cycles.
Steam Desuperheater Injector
Water spray injector reducing superheated steam temperature in boiler outlet headers, under HTS 8404.10.0050. Attenuation control for process steam requirements.
Condenser Tube Cleaning System
Automated bullet or sponge ball circulation system maintaining condenser tube cleanliness, HTS 8404.10.0050 auxiliary for steam power condensers. Prevents efficiency loss from fouling.
Gas-to-Gas Boiler Economizer
Air preheater recovering flue gas heat to preheat combustion air for boilers, HTS 8404.10.0050 auxiliary plant. Typically rotary regenerative or tubular recuperative design for gas-fired units.
Industrial Superheater Coil Assembly
Tubular coil assembly that superheats steam beyond saturation temperature in boiler systems, falling under HTS 8404.10.0050 as other auxiliary plant for use with boilers. It improves steam quality for turbine efficiency in power generation.