HS Code for Water filter

Water filters are classified under HS code 8421.21, which resides within Chapter 84 for nuclear reactors, boilers, machinery, and mechanical appliances. Heading 8421 specifically covers centrifuges, including centrifugal dryers, and filtering or purifying machinery and apparatus for liquids or gases. Subheading 8421.21 is specifically carved out for machinery and apparatus for filtering or purifying water. This classification applies regardless of whether the filter is intended for industrial, commercial, or domestic use. The primary function of the device—removing impurities from water through physical, chemical, or biological processes—is the defining characteristic for this code. This includes everything from large-scale municipal water treatment systems to small under-sink reverse osmosis units. The classification follows GIR 1 and GIR 6, ensuring that the specific sub-category for water takes precedence over the general category for other liquids (8421.29).

Products Included

• Reverse osmosis water purification systems
• Activated carbon water filters
• Domestic carafe-style water filters
• Industrial water filtration machinery
• Ultraviolet (UV) water purifiers
• Ion-exchange water softeners

Common Misclassification

Water filters are often confused with 8421.29, which is the code for filtering or purifying machinery for liquids other than water (such as oil or beverages). Another common error is using 8421.39, which is reserved for filtering or purifying machinery for gases. Furthermore, replacement filter cartridges are sometimes misclassified under the material they are made of (e.g., plastic 3926 or ceramic 6909), but they should generally be classified as parts of filtering machinery under 8421.99.

FAQ

What is the HS code for water filter?

The standard HS code for water filtering or purifying machinery and apparatus is 8421.21.

Does this code include portable water filter bottles?

Yes, portable bottles with integrated filtration systems are typically classified under 8421.21 because the essential character of the item is the water purification function.