HTSUS, United States

8403.10.00.00

Central heating boilers (other than those of heading 8402) and parts thereof / Boilers

Classification path

  1. Central heating boilers (other than those of heading 8402) and parts thereof
  2. Boilers

Rates of duty

General (MFN)
Free
Column 2Cuba, North Korea, Russia, Belarus
45%
Unit of quantity
No.

Related lines in heading 8403

About heading 8403

Central heating boilers (other than those of heading 8402) and parts thereof

Heading 8403 covers central heating boilers other than those of heading 8402, and parts for those boilers. It has two declarable lines: complete boilers under 8403.10.00.00 and parts under 8403.90.00.00. Both carry a general (MFN) rate of Free.

Full guide to heading 8403

Products in this heading

  • Residential central heating hot water boilers
  • Commercial central heating boilers
  • Central heating boilers for hydronic heating systems
  • Boiler bodies for central heating boilers
  • Boiler shells for central heating boilers
  • Replacement boiler sections for central heating boilers
  • Boiler headers for central heating boilers

Frequently asked questions

What is the HTS code for central heating boilers?

Complete central heating boilers are classified under 8403.10.00.00, with a general (MFN) rate of Free.

What is the duty on central heating boiler parts?

Parts for central heating boilers are classified under 8403.90.00.00, with a general (MFN) rate of Free.

How do I classify a central heating boiler versus its parts?

Classify a complete central heating boiler under 8403.10.00.00, general (MFN) Free, and a part under 8403.90.00.00, general (MFN) Free.

Source: USITC Harmonized Tariff Schedule, retrieved October 22, 2026.

HTS 8403.10.00.00: Central heating boilers (other than those of heading 8402)..., Free duty | HTSBase