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HSChapter 84
U.S. imports of superheated water boilers (HS 840220) totaled $626K in April 2026, traded with 11 countries.
Superheated Water Boilers imports of $626K in April 2026 ran 143% above the year-to-date monthly average of $257K.
Last updated: April 2026 dataSuperheated water boilers — which circulate pressurized hot water above 100°C rather than generating steam — are widely used in district heating networks, large commercial HVAC systems, and industrial process heating. Classified under tariff line 8402200000, they are distinguished from steam boilers by their operating principle: the water remains liquid under pressure throughout the circuit. This design distinction is commercially significant because superheated water systems offer precise temperature control and lower energy losses over long distribution distances compared to steam-based alternatives.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The key distinction is the phase of the working fluid: a superheated water boiler keeps water in a liquid state under high pressure, while a steam boiler converts water to vapor. If a unit can operate in both modes, the primary design intent and the manufacturer's specification govern classification. CBP may request technical documentation to confirm the operating principle.
No — heading 840220 covers superheated water boilers regardless of their end-use application, whether district heating, industrial process, or commercial HVAC. The classification is determined by the equipment's design and operating principle, not by the sector in which it is deployed.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CANADA | $605K | $5K | -$600K |
| BRAZIL | -- | $22K | +$22K |
| FINLAND | $12K | -- | -$12K |
| GERMANY | $9K | -- | -$9K |
| PHILIPPINES | -- | $6K | +$6K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8402200000 | SUPER-HEATED WATER BOILERS | $626K | 13.30% | $2K |
SUPER-HEATED WATER BOILERS
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8402200000 | SUPER-HEATED WATER BOILERS | $35K |
SUPER-HEATED WATER BOILERS
4 t
DIGITAL PROCESSING UNITS, N.E.S.O.I.
HS 847150
PARTS & ACCESSORIES FOR ADP MACHINES & UNITS
HS 847330
PORT DIGTL AUTOMATIC DATA PROCESS MACH NOT > 10 KG
HS 847130
AUTOMATIC DATA PROCESSING STORAGE UNITS, N.E.S.O.I
HS 847170
AUTOMATIC DATA PROCESSING UNITS, N.E.S.O.I.
HS 847180
TURBOJET AND TURBOPROLLER PARTS
HS 841191
| State | Imports | Exports | Balance |
|---|---|---|---|
| Connecticut | $605K | -- | -$605K |
| Georgia | -- | $22K | +$22K |
| Texas | $9K | $3K | -$6K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHAMPLAIN-ROUSES POINT, NY | $605K | -- | -$605K |
| ATLANTA, GA | -- | $22K | +$22K |
| CLEVELAND, OH | $12K | -- | -$12K |