U.S. imports of Central Heating Boilers (Non-Steam-Power-Generating) (SITC 81217) totaled $23.0M in August 2026, imported from 21 countries.
Importers of Central Heating Boilers (Non-Steam-Power-Generating) paid $5.7M in duties in August 2026, an average duty rate of 24.89% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataHydronic central heating boilers — designed to heat water for space heating rather than to generate steam for power production — are a technically specific product category with distinct classification boundaries. The critical distinction from power-generating boilers is end-use: these units serve building heating systems and are not rated or designed for electricity generation or industrial steam supply. Iron and steel construction means Section 232 tariff applicability should be evaluated based on the specific HTS subheading and country of origin.
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656 import shipments a month
The distinction rests on design intent and output: central heating boilers produce hot water or low-pressure steam solely for space or water heating in buildings, while power-generating boilers produce high-pressure steam to drive turbines. Technical specifications such as operating pressure ratings and certifications (e.g., ASME codes) can support the classification determination.
Importers generally need commercial invoices with detailed technical specifications, country-of-origin certificates, and any applicable safety or efficiency certifications required by US state or local codes. If the boiler contains significant iron or steel content, mill certificates may also be needed to assess Section 232 tariff exposure.
Basic heading 210 of 419 in section 8
Basic heading 81217 · $23.0M of $46.9B
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Imports · August 2026
origin
Canada and South Korea together supply 57% of it.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$23.0MYoY · free account
Exports
$8.9MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $281.5M of Central Heating Boilers (Non-Steam-Power-Generating) and exported $85.7M.
Through August 2026. Source: U.S. Census Bureau.