</>Build with Tariff Intelligence|Programmatic access to tariff calculations and HS code classification.Explore Developer Resources →

HEPA Air Purifier Filter Unit from China

A high-efficiency particulate air (HEPA) filter unit designed for residential and commercial air purification systems to remove dust, pollen, and microbes from indoor air. It falls under HTS 8421.39.01 as filtering machinery for gases, specifically for purifying ambient air in HVAC systems. This classification covers benchtop or wall-mounted units used in non-industrial settings.

Duty Rate — China → United States

37.5%

Rate breakdown

9903.88.0125%Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China

Import Tips

Verify filter efficiency ratings (e.g

H13/H14 HEPA) and include test certificates to confirm compliance with EPA or EU standards

Label units clearly with airflow capacity (CFM) and power requirements to avoid misclassification as parts