HS code · 4-digit heading
HS Code 73.22 – Radiators for central heating, not electrically heated and parts thereof, of iron or steel; air heaters, hot air distributors not electrically heated, with motor fan or blower
What HS 73.22 covers
Heading 7322 encompasses a specific range of heating equipment and parts, made exclusively of iron or steel, designed for central heating systems but explicitly *not electrically heated*. This classification primarily covers radiators used in residential, commercial, and industrial central heating setups, along with their identifiable iron or steel parts. Furthermore, it includes non-electrically heated air heaters and hot air distributors equipped with a motor fan or blower, often found in larger spaces like workshops, warehouses, or commercial buildings for space heating. The scope is defined by both the material (iron or steel) and the heating method (non-electric, typically fueled by gas, oil, or hot water/steam). It excludes electric radiators (classified in Chapter 85) and radiators made of other materials (e.g., plastic, which would fall under Chapter 39). This classification is crucial for trade compliance as it dictates applicable duties, taxes, and often specific technical regulations related to energy efficiency, safety, and environmental standards in importing countries. Its placement within Chapter 73 (Articles of iron or steel) highlights its material composition as the primary classification criterion, distinguishing it from heating apparatus of other base metals or those incorporating significant electrical components.
- Covers
- Cast iron radiators
- Steel panel radiators
- Sectional steel radiators
- Finned tube heat exchangers (non-electric, of iron or steel)
- Radiator sections (of iron or steel)
- Radiator valves (parts, of iron or steel)
- Industrial gas-fired unit heaters (with fan)
- Commercial oil-fired hot air distributors
- Hot water convectors (non-electric, of iron or steel)
- Steam radiators
- Parts of cast iron radiators
- Mounting brackets for radiators (of iron or steel)
- Radiator covers (integral, of iron or steel)
- Heat exchanger coils for non-electric furnaces
- Warm air furnaces (non-electric, with motor fan)
- Flue gas heat exchangers (of iron or steel)
- Waste heat recovery units (non-electric, of iron or steel).
- Examples
A German HVAC manufacturer might export high-efficiency steel panel radiators to new housing developments in Poland, utilizing established EU trade routes with minimal tariffs. Conversely, a Chinese factory could ship large industrial gas-fired hot air distributors, complete with motor fans, to a logistics warehouse under construction in the United States, facing specific import duties and potentially energy efficiency standards. An Italian company might import specialized cast iron radiator sections from a foundry in Turkey to assemble bespoke antique-style radiators for the luxury market, leveraging Mediterranean shipping lanes.
Subheadings under 73.22 3
Codes often confused with 73.22
Common mistake. Common misclassifications arise when traders overlook the 'not electrically heated' clause, mistakenly classifying electric radiators (which fall under 8516) here. Another frequent error is classifying radiators or air heaters made of materials other than iron or steel, such as aluminum (which would be 7616) or plastic (3925). Parts not exclusively or principally used with these specific iron or steel radiators or air heaters, like general-purpose fans (8414) or non-integral valves of other materials (8481), are also often incorrectly included. The key is strict adherence to both material and heating method.
Top exporters and importers of HS code 7322, 2025
In 2025, the largest exporter of HS code 7322 in UN Comtrade data was Mexico, with 17% of world exports; the largest importer in UN Comtrade data was the United States, with 22% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 Mexico $602M 17% of world exports
- 2 Türkiye $488M 14% of world exports
- 3 United States $427M 12% of world exports
World total: $3.6B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $845M 22% of world imports
- 2 Canada $476M 12% of world imports
- 3 United Kingdom $410M 11% of world imports
World total: $3.9B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Questions about HS 73.22
What is HS code 7322?
HS code 7322 is a 4-digit heading in the Harmonized System that covers: Radiators for central heating, not electrically heated and parts thereof, of iron or steel; air heaters, hot air distributors not electrically heated, with motor fan or blower. Heading 7322 encompasses a specific range of heating equipment and parts, made exclusively of iron or steel, designed for central heating systems but explicitly *not electrically heated*. This classification primarily covers radiators used in residential, commercial, and industrial central heating setups, along with their identifiable iron or steel parts. Furthermore, it includes non-electrically heated air heaters and hot air distributors equipped with a motor fan or blower, often found in larger spaces like workshops, warehouses, or commercial buildings for space heating. The scope is defined by both the material (iron or steel) and the heating method (non-electric, typically fueled by gas, oil, or hot water/steam). It excludes electric radiators (classified in Chapter 85) and radiators made of other materials (e.g., plastic, which would fall under Chapter 39). This classification is crucial for trade compliance as it dictates applicable duties, taxes, and often specific technical regulations related to energy efficiency, safety, and environmental standards in importing countries. Its placement within Chapter 73 (Articles of iron or steel) highlights its material composition as the primary classification criterion, distinguishing it from heating apparatus of other base metals or those incorporating significant electrical components.
What products fall under HS code 7322?
Cast iron radiators, steel panel radiators, sectional steel radiators, finned tube heat exchangers (non-electric, of iron or steel), radiator sections (of iron or steel), radiator valves (parts, of iron or steel), industrial gas-fired unit heaters (with fan), commercial oil-fired hot air distributors, hot water convectors (non-electric, of iron or steel), steam radiators, parts of cast iron radiators, mounting brackets for radiators (of iron or steel), radiator covers (integral, of iron or steel), heat exchanger coils for non-electric furnaces, warm air furnaces (non-electric, with motor fan), flue gas heat exchangers (of iron or steel), waste heat recovery units (non-electric, of iron or steel).
What are common misclassifications for HS code 7322?
Common misclassifications arise when traders overlook the 'not electrically heated' clause, mistakenly classifying electric radiators (which fall under 8516) here. Another frequent error is classifying radiators or air heaters made of materials other than iron or steel, such as aluminum (which would be 7616) or plastic (3925). Parts not exclusively or principally used with these specific iron or steel radiators or air heaters, like general-purpose fans (8414) or non-integral valves of other materials (8481), are also often incorrectly included. The key is strict adherence to both material and heating method.
Which countries are the top exporters of goods under HS code 7322?
In 2025, the top exporters of HS code 7322 in UN Comtrade data were Mexico ($602M, 17% of world exports), Türkiye ($488M) and the United States ($427M). World exports came to about $3.6B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of goods under HS code 7322?
In 2025, the top importers of HS code 7322 in UN Comtrade data were the United States ($845M, 22% of world imports), Canada ($476M) and the United Kingdom ($410M). World imports came to about $3.9B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
How is HS code 7322 structured?
HS code 7322 is a 4-digit heading under Chapter 73 of the Harmonized System. The first 2 digits (73) identify the chapter, and digits 3-4 (22) specify the heading. This code contains multiple 6-digit subheadings for precise product classification.