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HSChapter 84
U.S. imports of industrial-type heat exchange units (HS 841950) totaled $201.9M in July 2026, traded with 78 countries.
Importers of Industrial-Type Heat Exchange Units paid $28.7M in duties in July 2026 — an effective duty rate of 21% on $136.7M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataHeat exchangers are foundational equipment across refining, chemical processing, HVAC, and power generation, and the US tariff schedule carves out brazed aluminum plate-fin heat exchangers (8419501000) as a distinct subheading separate from all other industrial heat exchange units (8419505000). Brazed aluminum plate-fin exchangers are critical components in air-separation plants and LNG facilities, where their high surface-area efficiency and cryogenic performance are unmatched by shell-and-tube designs. Imports of certain heat exchangers from China may be subject to Section 301 tariffs, and the brazed aluminum subheading can also intersect with Section 232 considerations depending on aluminum content and origin.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
7.3K shipments/mo
Brazed aluminum plate-fin (BAPF) exchangers use a vacuum-brazed aluminum core with corrugated fins that achieve extremely high heat-transfer surface area in a compact, lightweight package. They are the preferred technology for cryogenic air separation and natural gas liquefaction, where their performance characteristics differ materially from shell-and-tube or gasketed-plate exchangers. CBP distinguishes them by construction method (vacuum brazing of aluminum) and the plate-fin geometry.
When imported as a standalone unit, a heat exchanger classifies under 841950 regardless of its intended installation in a larger system. If it is imported as an integral component of a complete, assembled refrigeration or HVAC system, GRI 3 analysis may pull it into the system's heading. Importers of knocked-down or partially assembled systems should document the configuration carefully to support the classification.
Subheading 3 of 14 in heading 8419
Subheading 841950 · $201.9M of $1.0B
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8419505000 | Heat Exchange Units, NESOI | $151.9M | 15.01% | 69.40% | $22.8M |
| 8419501000 | Brazed Aluminum Plate-Fin Heat Exchangers | $50.0M | 11.90% | 62.55% | $5.9M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8419500000 | Heat Exchange Units, Industrial Type | $155.7M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$201.9MYoY · Pro
Exports
$155.7MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
customs district
destination
entry
rate provision · imports
29.4% enters free of duty; the effective duty rate is 14.24%.