U.S. exports of Vapor Generating Boilers, NESOI, Including Hybrid Boilers (HS 840219) totaled $3.3M in August 2026.
Importers of Vapor Generating Boilers, NESOI, Including Hybrid Boilers paid $55K in duties in August 2026, an average duty rate of 3.11% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Vapor Generating Boilers, NESOI, Including Hybrid Boilers imports of $1.8M in August 2026 ran 21% above the year-to-date monthly average of $1.5M.
Last updated: August 2026 dataHybrid boilers and other vapor-generating units that do not fit the watertube or fire-tube categories — including waste-heat recovery boilers and combined-cycle steam generators — are captured under tariff line 8402190000 as a residual 'not elsewhere specified or included' provision. The NESOI designation means classification here is appropriate only after confirming the unit does not meet the specific criteria of the watertube or fire-tube subheadings. Waste-heat boilers integrated into industrial exhaust systems are a common example, as their design differs fundamentally from conventional fired boilers.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
44 import shipments a month
A hybrid boiler combines elements of both watertube and fire-tube designs, or uses an unconventional heat source such as industrial exhaust gas. Because it does not fit neatly into either the watertube (840211/840212) or fire-tube categories, it defaults to the NESOI provision at 8402190000. Detailed engineering drawings and a manufacturer's classification statement are advisable to support this determination.
Generally yes, if the waste-heat boiler generates steam or other vapor and does not meet the specific design criteria of the watertube subheadings. However, if the unit is an integral part of a larger industrial apparatus (such as a furnace or engine), classification may shift to the heading for that primary apparatus. A functional analysis of the complete system is necessary.
Subheading 2 of 5 in heading 8402
Subheading 840219 · $3.3M of $11.2M
ImportsExports
Imports
$1.8MYoY · free account
Exports
$3.3MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $19.3M of Vapor Generating Boilers, NESOI, Including Hybrid Boilers and exported $33.3M.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 840219 — Vapor Generating Boilers, NESOI, Including Hybrid Boilers, so the companies trading it can find you. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8402190000 | Vapor Generating Boilers, NESOI, Including Hybrid | $1.8M | 3.11% | 21.79% | $55K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8402190000 | Vapor Generating Boilers, NESOI, Including Hybrid | $3.3M |
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.
Exports · August 2026
destination
Canada and Trinidad and Tobago together take 62% of it.
customs district
origin
entry
rate provision · imports
78.2% enters free of duty; duty collected equals 3.11% of imports for consumption.