# HS code 8404.20: Condensers for steam or other vapour power units

> HS code 8404.20 covers condensers for steam or other vapour power units. It sits in heading 84.04 (auxiliary plant for use with boilers of heading 84.02 or 84.03 (for example, economisers, super-heaters, soot removers, gas recoverers); condensers for steam or other vapour power units) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof). Other goods of heading 84.04 are classified under 8404.10 (auxiliary plant for use with boilers of heading 84.02 or 84.03) or 8404.90 (parts). National tariff lines under 8404.20 are live on border.bot for the United States (1 line, also used by 1 other country).

Source: https://border.bot/hs-codes/840420
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 84](https://border.bot/hs-codes/84) / [84.04](https://border.bot/hs-codes/8404) / [8404.20](https://border.bot/hs-codes/840420)

## Key facts

- HS code: 8404.20
- Covers: Condensers for steam or other vapour power units
- Heading: [84.04: Auxiliary plant for use with boilers of heading 84.02 or 84.03 (for example, economisers, super-heaters, soot removers, gas recoverers); condensers for steam or other vapour power units](https://border.bot/hs-codes/8404)
- Chapter: [84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof](https://border.bot/hs-codes/84)
- Edition: HS2022
- Duty in the United States: [See its 1 line](https://border.bot/countries/united-states/hs-codes/840420)

## What this code covers

HS code 8404.20 covers condensers for steam or other vapour power units.

The legal text of the subheading is “Condensers for steam or other vapour power units”, in HS2022.

## What it doesn’t cover

Other goods of heading 84.04 are classified under 8404.10 (auxiliary plant for use with boilers of heading 84.02 or 84.03) or 8404.90 (parts).

- [8404.10](https://border.bot/hs-codes/840410) Auxiliary plant for use with boilers of heading 84.02 or 84.03
- [8404.90](https://border.bot/hs-codes/840490) Parts

## How it is structured

8404.20 is a six-digit subheading. Its first two digits, 84, are the chapter; the first four, 8404, are heading 84.04; the last two, 20, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- Chapter 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof
- Heading 84.04: Auxiliary plant for use with boilers of heading 84.02 or 84.03 (for example, economisers, super-heaters, soot removers, gas recoverers); condensers for steam or other vapour power units
- Subheading 8404.20: Condensers for steam or other vapour power units

## In other countries

National tariff lines under 8404.20 are live on border.bot for the United States (1 line, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/840420): 1 line, used by 1 other country

- Previous subheading: [8404.10](https://border.bot/hs-codes/840410) Auxiliary plant for use with boilers of heading 84.02 or 84.03
- Next subheading: [8404.90](https://border.bot/hs-codes/840490) Parts

## Frequently asked questions

### What does HS code 8404.20 cover?

HS code 8404.20 covers condensers for steam or other vapour power units.

### Which heading and chapter is HS code 8404.20 in?

HS code 8404.20 is in heading 84.04 (auxiliary plant for use with boilers of heading 84.02 or 84.03 (for example, economisers, super-heaters, soot removers, gas recoverers); condensers for steam or other vapour power units) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof).

### Where are goods of heading 84.04 classified when 8404.20 doesn’t fit?

Other goods of heading 84.04 are classified under 8404.10 (auxiliary plant for use with boilers of heading 84.02 or 84.03) or 8404.90 (parts).

### Which countries’ tariffs list national lines under HS code 8404.20?

National tariff lines under 8404.20 are live on border.bot for the United States (1 line, also used by 1 other country).

## Sources and updates

The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.

This page was last updated on 11 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Machine-readable: https://border.bot/hs-codes/840420.json