Retrofitted Economizer Insert
Compact economizer insert designed for retrofitting existing boiler stacks to improve efficiency. HTS 8404.10.00.10 as auxiliary plant specifically for boiler exhaust heat recovery. Includes suspension frame and expansion joints.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If marketed for chimney lining heat recovery
Stack liners without boiler-specific design classify under general heat exchange equipment.
If imported primarily as refractory exhaust components
Heat-resistant exhaust system components fall under Chapter 68 articles of stone/minerals.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Provide stack dimension compatibility charts; include vibration analysis reports; ensure expansion joint specifications meet seismic codes
Related Products under HTS 8404.10.00.10
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 HTS 8404.10.00.10 as auxiliary plant specifically for use with boilers of headings 8402 or 8403. This heat exchanger mounts directly on the boiler exhaust stack.
Steel Tube Boiler Economizer
Finned steel tube economizer that captures residual heat from combustion gases to preheat boiler water, reducing fuel consumption. Falls under HTS 8404.10.00.10 as dedicated economizer auxiliary plant for steam boilers. Features high-pressure tubes rated for industrial boiler exhaust temperatures.
Fire Tube Economizer Module
Modular fire tube economizer with multiple passes for maximum heat transfer from flue gases to boiler feedwater. Specifically engineered as auxiliary equipment for water tube boilers under headings 8402/8403, hence HTS 8404.10.00.10. Includes mounting flanges for direct boiler integration.
Condensing Economizer Unit
Advanced condensing economizer that recovers both sensible and latent heat from boiler exhaust, achieving up to 98% efficiency. Designed exclusively as auxiliary plant for industrial boilers (HTS 8404.10.00.10). Features corrosion-resistant materials for acidic condensate handling.
Industrial Waste Heat Economizer
Heavy-duty economizer for recovering waste heat from large industrial boilers, featuring bare tube and finned sections. Classified under HTS 8404.10.00.10 as essential auxiliary plant for boilers in power generation and manufacturing. Built to withstand high-temperature, high-dust flue gas environments.
Packaged Boiler Economizer Kit
Complete factory-assembled economizer kit including tubes, headers, casing, and mounting hardware for field installation on boilers. Specifically HTS 8404.10.00.10 as auxiliary plant despite kit packaging, due to exclusive boiler application. Includes pre-wired temperature controls.