HS code 8404: Auxiliary plant for use with boilers
Heading 8404 of the EU Combined Nomenclature 2026, in chapter 84, with the official text of every 6-digit subheading and 8-digit CN code below it.
Official description
8404Auxiliary plant for use with boilers of heading 8402 or 8403 (for example, economisers, superheaters, soot removers, gas recoverers); condensers for steam or other vapour power units
Place in the nomenclature: 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof > 8404
Explanatory note (Eurostat)
Auxiliary plant for use with boilers of heading 8402 or 8403, e.g. economizers, superheaters, soot removers and gas recoverers; condensers for steam or other vapour power units; parts thereof
- Subheadings (6 digits)
- 3
- CN codes (8 digits)
- 3
Subheadings and CN codes in heading 8404
- 8404 10Auxiliary plant for use with boilers of heading 8402 or 8403
Explanatory note (Eurostat): Auxiliary plant for use with boilers of heading 8402 or 8403, e.g. economizers, superheaters, soot removers and gas recoverers;
- 8404 10 00 Auxiliary plant for use with boilers of heading 8402 or 8403
- 8404 20Condensers for steam or other vapour power units
- 8404 20 00 Condensers for steam or other vapour power units
- 8404 90Parts
Explanatory note (Eurostat): Parts of auxiliary plant of heading 8402 or 8403 and condensers for steam or other vapour power units, n.e.s.
- 8404 90 00 Parts
The first 6 digits are the Harmonized System, shared worldwide: a US HTS code that starts with the same 6 digits sits under the same subheading. The last 2 digits are the EU's own CN split.
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Not a binding classification
These pages show the official texts for reference. They are not a binding classification: check the code with your customs broker, or ask your customs authority for Binding Tariff Information (BTI).
Source
Source: EU Combined Nomenclature 2026 (Commission Implementing Regulation (EU) 2025/1926), © European Union, https://eur-lex.europa.eu/. Reformatted by WISEPIM: indent dashes removed and parent lines joined. Only the Official Journal is authentic.