HS code 8421.29: Filtering or purifying machinery and apparatus for liquids
Last updated
Key facts
- HS code
- 8421.29
- Covers
- Filtering or purifying machinery and apparatus for liquids
- Edition
- HS2022
- Duty in the United States
- See its 4 lines
Summary
HS code 8421.29 covers filtering or purifying machinery and apparatus for liquids, other than those classified in 8421.21, 8421.22 and 8421.23. It sits in heading 84.21 (centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof). Other goods of heading 84.21 are classified under 8421.11 (centrifuges, including centrifugal dryers, cream separators), 8421.12 (centrifuges, including centrifugal dryers, clothes-dryers), 8421.19 (centrifuges, including centrifugal dryers, other), 8421.21 (filtering or purifying machinery and apparatus for liquids, for filtering or purifying water) or 7 others. National tariff lines under 8421.29 are live on border.bot for the United States (4 lines, also used by 1 other country).
What this code covers
HS code 8421.29 covers filtering or purifying machinery and apparatus for liquids, other than those classified in 8421.21, 8421.22 and 8421.23.
The legal text of the subheading is “Filtering or purifying machinery and apparatus for liquids: Other”, read under “Filtering or purifying machinery and apparatus for liquids”, in HS2022.
What it doesn’t cover
Other goods of heading 84.21 are classified under 8421.11 (centrifuges, including centrifugal dryers, cream separators), 8421.12 (centrifuges, including centrifugal dryers, clothes-dryers), 8421.19 (centrifuges, including centrifugal dryers, other), 8421.21 (filtering or purifying machinery and apparatus for liquids, for filtering or purifying water) or 7 others.
- 8421.11Centrifuges, including centrifugal dryers: Cream separators
- 8421.12Centrifuges, including centrifugal dryers: Clothes-dryers
- 8421.19Centrifuges, including centrifugal dryers: Other
- 8421.21Filtering or purifying machinery and apparatus for liquids: For filtering or purifying water
- 8421.22Filtering or purifying machinery and apparatus for liquids: For filtering or purifying beverages other than water
- 8421.23Filtering or purifying machinery and apparatus for liquids: Oil or petrol-filters for internal combustion engines
- 8421.31Filtering or purifying machinery and apparatus for gases: Intake air filters for internal combustion engines
- 8421.32Filtering or purifying machinery and apparatus for gases: Catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines
- 8421.39Filtering or purifying machinery and apparatus for gases: Other
- 8421.91Parts: Of centrifuges, including centrifugal dryers
- 8421.99Parts: Other
How it is structured
8421.29 is a six-digit subheading. Its first two digits, 84, are the chapter; the first four, 8421, are heading 84.21; the last two, 29, identify the subheading within the heading.
Countries add their own digits after these six for their national tariff lines.
- Heading 84.21
- Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases
- Within the heading
- Filtering or purifying machinery and apparatus for liquids
- Subheading 8421.29
- Other
In other countries
National tariff lines under 8421.29 are live on border.bot for the United States (4 lines, also used by 1 other country).
- United States4 lines, used by 1 other country
Frequently asked questions
What does HS code 8421.29 cover?
HS code 8421.29 covers filtering or purifying machinery and apparatus for liquids, other than those classified in 8421.21, 8421.22 and 8421.23.
Which heading and chapter is HS code 8421.29 in?
HS code 8421.29 is in heading 84.21 (centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases) in chapter 84 (nuclear reactors, boilers, machinery and mechanical appliances; parts thereof).
Where are goods of heading 84.21 classified when 8421.29 doesn’t fit?
Other goods of heading 84.21 are classified under 8421.11 (centrifuges, including centrifugal dryers, cream separators), 8421.12 (centrifuges, including centrifugal dryers, clothes-dryers), 8421.19 (centrifuges, including centrifugal dryers, other), 8421.21 (filtering or purifying machinery and apparatus for liquids, for filtering or purifying water) or 7 others.
Which countries’ tariffs list national lines under HS code 8421.29?
National tariff lines under 8421.29 are live on border.bot for the United States (4 lines, 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.