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HS code reference

HTS/HS Code for Water filter: 8421.21

Filtering or purifying machinery and apparatus for water.

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Review start

8421.21

Use case

Pre-quote review

Next step

Calculate duty

Estimates are for planning only. Confirm final classification and rates with a licensed customs broker or the relevant customs authority.

Review Notes

Search intent

This page supports exporters quoting household water filters, purifier cartridges, and filtration equipment.

Trade workflow

It helps separate complete filtering equipment from replacement cartridges, housings, and parts.

Common searches

water purifierfilter cartridgehousehold water filterfiltration system

Classification boundary

Review material, use, construction, and accessories

Quote workflow

Estimate first, then confirm with official tariff or broker

Manual review checklist

  • Confirm whether the shipment is complete equipment or replacement filter elements.
  • Check filtration media, housing material, and intended water use.
  • Review NSF/FDA/food-contact claims separately from tariff classification.

Is 8421.21 always the HS code for Water filter?

Water filter can be reviewed from 8421.21, but the final code depends on full product details, material, use, and destination tariff rules.

How do I estimate US import cost with this code?

Use the tariff calculator with origin, customs value, freight, and insurance to estimate landed cost.

Is this a binding classification opinion?

No. This page is for pre-quote planning and does not replace customs rulings, official tariff data, or licensed broker advice.

Related HS code pages

8421.11

Centrifuges

Centrifuges; cream separators

8421.12

Centrifuges

Centrifuges; clothes-dryers

8421.19

Centrifuges

Centrifuges; n.e.c. in heading no. 8421, including centrifugal dryers (but not clothes-dryers)

8421.22

Machinery

Machinery; for filtering or purifying beverages other than water

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