HTS Heading 8419

Machinery, plant or laboratory equipment, whether or not electrically heated (excluding furnaces, ovens and other equipment of heading 8514), for the treatment of materials by a process involving a change of temperature such as heating, cooking, roasting, distilling, rectifying, sterilizing, pasteurizing, steaming, drying, evaporating, vaporizing, condensing or cooling, other than machinery or plant of a kind used for domestic purposes; instantaneous or storage water heaters, nonelectric; parts thereof

All 39 HTS codes under heading 8419 (machinery, plant or laboratory equipment), with their duty rates from the 2026 HTS Revision 23. General duty Free to 4.2%.

Every line of heading 8419

  • 8419 Machinery, plant or laboratory equipment, whether or not electrically heated (excluding furnaces, ovens and other equipment of heading 8514), for the treatment of materials by a process involving a change of temperature such as heating, cooking, roasting, distilling, rectifying, sterilizing, pasteurizing, steaming, drying, evaporating, vaporizing, condensing or cooling, other than machinery or plant of a kind used for domestic purposes; instantaneous or storage water heaters, nonelectric; parts thereof.
  • 8419.11.00.00 Instantaneous gas water heaters (No.): General Free; Special none; Column 2 45%.
  • 8419.12.00.00 Solar water heaters (under: Instantaneous or storage water heaters, nonelectric) (No.): General Free; Special none; Column 2 45%.
  • 8419.19.01 Other (under: Instantaneous or storage water heaters, nonelectric): General Free; Special none; Column 2 45%.
  • 8419.19.01.20 Instantaneous water heaters (under: Other) (No.).
  • 8419.19.01.60 Other (under: Other) (No.).
  • 8419.20.00 Medical, surgical or laboratory sterilizers: General Free; Special none; Column 2 35%.
  • 8419.20.00.10 Medical or surgical sterilizers (No.).
  • 8419.20.00.20 Laboratory sterilizers (under: Medical, surgical or laboratory sterilizers) (No.).
  • 8419.33 Lyophilisation apparatus, freeze drying units and spray dryers.
  • 8419.33.10.00 For agricultural products (under: Lyophilisation apparatus, freeze drying units and spray dryers) (No.): General Free; Special none; Column 2 35%.
  • 8419.33.50.00 Other (under: Lyophilisation apparatus, freeze drying units and spray dryers) (No.): General Free; Special none; Column 2 35%.
  • 8419.34.00.00 Other, for agricultural products (No.): General Free; Special none; Column 2 35%.
  • 8419.35 Other, for wood, paper pulp, paper or paperboard.
  • 8419.35.10.00 For wood (under: Other, for wood, paper pulp, paper or paperboard) (No.): General Free; Special none; Column 2 35%.
  • 8419.35.50.00 Other (under: Other, for wood, paper pulp, paper or paperboard) (No.): General Free; Special none; Column 2 35%.
  • 8419.39.02 Other (under: Dryers): General Free; Special none; Column 2 35%.
  • 8419.39.02.70 For foods and beverages (under: Other) (No.).
  • 8419.39.02.80 Other (under: Other) (No.).
  • 8419.40.00 Distilling or rectifying plant: General Free; Special none; Column 2 35%.
  • 8419.40.00.10 Rotary evaporators (under: Distilling or rectifying plant) (No.).
  • 8419.40.00.90 Other (under: Distilling or rectifying plant) (No.).
  • 8419.50 Heat exchange units (under: Machinery, plant or laboratory equipment, whether or not electrically heated (excluding furnaces, ovens and other equipment of heading 8514), for the treatment of materials by a process involving a change of temperature such as heating, cooking, roasting, distilling, rectifying, sterilizing, pasteurizing, steaming, drying, evaporating, vaporizing, condensing or cooling, other than machinery or plant of a kind used for domestic purposes; instantaneous or storage water heaters, nonelectric; parts thereof).
  • 8419.50.10.00 Brazed aluminum plate-fin heat exchangers (No.): General 4.2%; Special Free (A,AU,BH,C,CL,CO,D,E,IL,JO,JP,KR,MA,OM,P,PA,PE,S,SG); Column 2 35%.
  • 8419.50.50.00 Other (under: Heat exchange units) (No.): General Free; Special none; Column 2 35%.
  • 8419.60 Machinery for liquefying air or other gases.
  • 8419.60.10.00 Machinery containing brazed aluminum plate-fin heat exchangers (No.): General 4.2%; Special Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 35%.
  • 8419.60.50.00 Other (under: Machinery for liquefying air or other gases) (No.): General Free; Special none; Column 2 35%.
  • 8419.81 For making hot drinks or for cooking or heating food.
  • 8419.81.50 Cooking stoves, ranges and ovens: General Free; Special none; Column 2 35%.
  • 8419.81.50.40 For use in civil aircraft (under: Cooking stoves, ranges and ovens) (No.).
  • 8419.81.50.80 Other (under: Cooking stoves, ranges and ovens) (No.).
  • 8419.81.90 Other (under: For making hot drinks or for cooking or heating food): General Free; Special none; Column 2 35%.
  • 8419.81.90.40 Of a type used in restaurants, hotels or similar locations (No.).
  • 8419.81.90.80 Other (under: Other) (No.).
  • 8419.89 Other (under: Other machinery, plant or equipment).
  • 8419.89.10.00 For making paper pulp, paper or paperboard (No.): General Free; Special none; Column 2 35%.
  • 8419.89.60.00 Molten-salt-cooled acrylic acid reactors (No.): General Free; Special none; Column 2 35%.
  • 8419.89.95 Other (under: Other): General 4.2%; Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 35%.
  • 8419.89.95.10 Heating mantles; drum heaters and heating belts for heating containers (No.).
  • 8419.89.95.20 For food and beverages (under: Designed for cooling) (No.).
  • 8419.89.95.40 Other (under: Designed for cooling) (No.).
  • 8419.89.95.50 For food and beverages (under: Other) (No.).
  • 8419.89.95.70 For rubber and plastics (under: Other) (No.).
  • 8419.89.95.90 For other materials (under: Other) (No.).
  • 8419.90 Parts (under: Machinery, plant or laboratory equipment, whether or not electrically heated (excluding furnaces, ovens and other equipment of heading 8514), for the treatment of materials by a process involving a change of temperature such as heating, cooking, roasting, distilling, rectifying, sterilizing, pasteurizing, steaming, drying, evaporating, vaporizing, condensing or cooling, other than machinery or plant of a kind used for domestic purposes; instantaneous or storage water heaters, nonelectric; parts thereof).
  • 8419.90.10.00 Of instantaneous or storage water heaters (kg): General Free; Special none; Column 2 45%.
  • 8419.90.20.00 Of machinery and plant for making paper pulp, paper or paperboard (kg): General Free; Special none; Column 2 35%.
  • 8419.90.30.00 Of heat exchange units (under: Parts) (kg): General Free; Special none; Column 2 35%.
  • 8419.90.50 Of molten-salt-cooled acrylic acid reactors; of medical, surgical or laboratory sterilizers: General Free; Special none; Column 2 35%.
  • 8419.90.50.40 Of medical, surgical or laboratory sterilizers (kg).
  • 8419.90.50.80 Other (under: Of molten-salt-cooled acrylic acid reactors; of medical, surgical or laboratory sterilizers) (kg).
  • 8419.90.85.00 Of electromechanical tools for working in the hand with self-contained electric motor (kg): General Free; Special none; Column 2 35%.
  • 8419.90.95 Other (under: Other): General 4%; Special Free (A*,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG); Column 2 35%.
  • 8419.90.95.20 Of an apparatus of a type used in restaurants, hotels or similar locations (kg).
  • 8419.90.95.80 Other (under: Other) (kg).

From MFG Calcs data: Heat exchange and process heating

U.S. imports of heat exchange and process heating (heading 8419) came to $9.78B in 2025, with $1.20B in calculated duty: an effective duty of 12.2%, every duty included.

Effective duty in Sep 2026: 14.1%, against 15.9% in Sep 2025.

Largest sources in 2025: Mexico $1.55B at 3.3% effective duty; Taiwan $1.24B at 11.0% effective duty; China $1.16B at 43.2% effective duty; Canada $857M at 2.2% effective duty; South Korea $752M at 5.8% effective duty.

These are family totals from U.S. import statistics published through USITC DataWeb, not this heading's rate alone; effective duty is calculated duty as a share of customs value, an estimate, not a ruling.

About these rates

The rates are those printed in the 2026 HTS Revision 23, published by the U.S. International Trade Commission. A 10-digit statistical line takes the rates printed on the 8-digit line above it. Chapter 99 duties (Section 232, Section 301, IEEPA) depend on the product, the origin and the date, are charged on top, and are not included. A code here is a strong lead, not a ruling: confirm it with a customs broker or a CBP binding ruling.

Last reviewed 2026-11-12.