Harmonized System
U.S. imports of Electric Instantaneous & Storage Water Heaters; Immersion Heaters (HS 851610) totaled $67.1M in August 2026, imported from 45 countries.
Importers of Electric Instantaneous & Storage Water Heaters; Immersion Heaters paid $2.8M in duties in August 2026, an average duty rate of 4.19% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataMexico leads US imports of electric water heaters under this heading, with China and Canada also significant, reflecting both USMCA-advantaged nearshore production and broad global manufacturing capacity. The US schedule divides the heading between electric storage water heaters (8516100040) — the tank-style units common in residential construction — and instantaneous (tankless) water heaters plus immersion heaters (8516100080), which serve both residential and industrial process-heating applications. Products must comply with applicable UL or ANSI safety standards and may be subject to Department of Energy efficiency regulations before they can be sold in the US market. Chinese-origin units are subject to Section 301 tariffs, a factor that has accelerated sourcing shifts toward Mexico and other origins.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
3.6K import shipments a month
Storage water heaters maintain a reservoir of heated water and classify under 8516100040, while instantaneous heaters heat water on demand without a storage tank and fall under 8516100080 along with immersion heaters. The distinction matters because the two lines may carry different duty rates, and the product type must match the technical description on the commercial invoice and entry documentation.
Yes. The US Department of Energy sets minimum energy factor (or uniform energy factor) standards for water heaters sold in the US market. Importers should confirm that products meet current DOE efficiency requirements before shipment, as non-compliant units cannot legally be sold domestically regardless of their customs clearance status.
Trade Directory
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Subheading 7 of 14 in heading 8516
Subheading 851610 · $67.1M of $1.0B
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 |
|---|---|---|---|---|---|
| 8516100040 | Electric Storage Water Heaters | $40.9M | 1.74% | 12.56% | $710K |
| 8516100080 | Electric Instant Water Heaters & Immersion Heaters | $25.2M | 8.16% | 54.84% | $2.1M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8516100080 | Electric Instant Water Heaters & Immersion Heaters | $14.2M |
| 8516100040 | Electric Storage Water Heaters | $13.6M |
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
$67.1MYoY · free account
Exports
$27.8MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $875.4M of Electric Instantaneous & Storage Water Heaters; Immersion Heaters and exported $313.9M.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Mexico and China together supply 73% of it. China pays 18.7% duty; Mexico 0.1%.
customs district
destination
entry
rate provision · imports
70.2% enters free of duty; duty collected equals 4.19% of imports for consumption.