# United States tariff lines under HS 8421.29

> The United States tariff splits HS 8421.29 (filtering or purifying machinery and apparatus for liquids: Other) into 4 national lines: 8421.29.00.05 (refrigerant recovery and recycling units), 8421.29.00.15 (oil-separation equipment), 8421.29.00.40 (hydraulic fluid power filters, rated at 1,000 kPa or greater) and 8421.29.00.65 (other). Every United States line under 8421.29 is free of general (MFN) duty.

Source: https://border.bot/countries/united-states/hs-codes/842129
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 84](https://border.bot/countries/united-states/hs-codes/84) / [8421.29](https://border.bot/countries/united-states/hs-codes/842129)

## Key facts

- HS subheading: [8421.29](https://border.bot/hs-codes/842129)
- Duty (MFN): Free
- National lines: 4
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 84: Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof

## United States lines under 8421.29

The United States tariff splits HS 8421.29 (filtering or purifying machinery and apparatus for liquids: Other) into 4 national lines: 8421.29.00.05 (refrigerant recovery and recycling units), 8421.29.00.15 (oil-separation equipment), 8421.29.00.40 (hydraulic fluid power filters, rated at 1,000 kPa or greater) and 8421.29.00.65 (other).

Every United States line under 8421.29 is free of general (MFN) duty.

- [8421.29.00.05](https://border.bot/countries/united-states/hs-codes/8421290005) Filtering or purifying machinery and apparatus for liquids, Other, Refrigerant recovery and recycling units. Duty (MFN): free
- [8421.29.00.15](https://border.bot/countries/united-states/hs-codes/8421290015) Filtering or purifying machinery and apparatus for liquids, Other, Other, Oil-separation equipment. Duty (MFN): free
- [8421.29.00.40](https://border.bot/countries/united-states/hs-codes/8421290040) Filtering or purifying machinery and apparatus for liquids, Other, Other, Other, Hydraulic fluid power filters, rated at 1,000 kPa or greater. Duty (MFN): free
- [8421.29.00.65](https://border.bot/countries/united-states/hs-codes/8421290065) Filtering or purifying machinery and apparatus for liquids, Other, Other, Other, Other. Duty (MFN): free

## In other countries

No other national tariff on border.bot has live lines under 8421.29 yet.

- [The Harmonized System text for 8421.29](https://border.bot/hs-codes/842129)

- Previous subheading: [8421.23](https://border.bot/countries/united-states/hs-codes/842123) Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof
- Next subheading: [8421.31](https://border.bot/countries/united-states/hs-codes/842131) Centrifuges, including centrifugal dryers; filtering or purifying machinery and apparatus, for liquids or gases; parts thereof

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 8421.29?

The United States tariff splits HS 8421.29 (filtering or purifying machinery and apparatus for liquids: Other) into 4 national lines: 8421.29.00.05 (refrigerant recovery and recycling units), 8421.29.00.15 (oil-separation equipment), 8421.29.00.40 (hydraulic fluid power filters, rated at 1,000 kPa or greater) and 8421.29.00.65 (other).

### What is the duty on HS 8421.29 in the United States?

Every United States line under 8421.29 is free of general (MFN) duty.

## Sources and updates

The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.

This page was last updated on 9 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.

Official source files:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/842129.json