Product classification
HS code for Industrial air heater: 7322.90
Air heaters and hot air distributors, (not electrically heated), incorporating a motor-driven fan or blower and parts thereof, of iron or steel.
Classification of industrial air heater under HS 7322.90
Industrial air heaters are classified under HS code 732290. This code applies to air heaters and hot air distributors that are not electrically heated and incorporate a motor-driven fan or blower. The classification is based on the primary material (iron or steel) and the mechanical function of distributing heated air. Unlike domestic heaters, these units are designed for large-scale industrial environments, such as warehouses or factories. The inclusion of a motor-driven fan is a critical technical requirement for this specific code, distinguishing it from simple radiators or convection units. Chapter 73 covers articles of iron or steel, and heading 7322 specifically addresses radiators for central heating and air heaters. The sub-heading 732290 is a residual category for air heaters and distributors that are not radiators. It is important to note that the heating source must be non-electric, such as gas, oil, or steam. If the unit uses an electric heating element, it would be classified under Chapter 85. The presence of the fan or blower is what differentiates these units from static heat exchangers. This classification is essential for determining the correct duty rates and ensuring compliance with safety standards for industrial heating equipment. The construction must be primarily of iron or steel to remain within Chapter 73; units made primarily of other materials or those incorporating complex heat exchange machinery might require classification in Chapter 84.
- Covers
- Non-electric industrial space heaters
- Gas-fired air heaters with integrated blowers
- Oil-fired hot air distributors
- Steam-heated air heaters for factory use
- Iron or steel air heating units with motor-driven fans
- Also under 7322.90
- Powrmatic NVx
- Reznor V3 Series
- Ambirad Radiant Heaters (some models)
- Combat Heating Products
- Benson Heating
Codes often confused with 7322.90
Common mistake. Industrial air heaters are often misclassified under 851629, which covers electric space heating apparatus. Another common error is using 841950, which is for heat exchangers; however, 732290 is more specific for units that include a fan for air distribution. If the unit lacks a fan, it may fall under 732211 or 732219 as a radiator.
Top exporters and importers of HS 732290 (the code used for industrial air heater), 2025
In 2025, the largest exporter of HS 732290 (the code used for industrial air heater) in UN Comtrade data was Mexico, with 32% of world exports; the largest importer in UN Comtrade data was the United States, with 43% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 732290, not only industrial air heater.
Top exporters 2025 · share of world exports
- 1 Mexico $556M 32% of world exports
- 2 United States $411M 23% of world exports
- 3 Canada $120M 6.8% of world exports
World total: $1.8B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $828M 43% of world imports
- 2 Canada $462M 24% of world imports
- 3 Germany $67M 3.4% of world imports
World total: $1.9B 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.
Brazil NCM codes for industrial air heater
Brazil splits HS 7322.90 into 2 NCM codes. Pick the one that matches your product:
- 7322.90.10Liquid-fuel air heaters for motor vehicles
- 7322.90.90Other air heaters, hot air distributors and parts
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about industrial air heater
What is the HS code for Industrial air heater?
The HS code for Industrial air heater is 732290 (Air heaters and hot air distributors, (not electrically heated), incorporating a motor-driven fan or blower and parts thereof, of iron or steel). The HS code for non-electric industrial air heaters with a motor-driven fan is 732290.
How do I classify Industrial air heater for customs?
Industrial air heater is classified under HS code 732290 — Air heaters and hot air distributors, (not electrically heated), incorporating a motor-driven fan or blower and parts thereof, of iron or steel. This is a 6-digit subheading level code.
Can electric industrial heaters use this code?
No, electric heaters must be classified under heading 8516, as 732290 is strictly for non-electrically heated units.
Which countries are the top exporters of industrial air heater (HS 732290)?
In 2025, the top exporters of HS 732290 (the code used for industrial air heater) in UN Comtrade data were Mexico ($556M, 32% of world exports), the United States ($411M) and Canada ($120M). World exports came to about $1.8B, 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 industrial air heater (HS 732290)?
In 2025, the top importers of HS 732290 (the code used for industrial air heater) in UN Comtrade data were the United States ($828M, 43% of world imports), Canada ($462M) and Germany ($67M). World imports came to about $1.9B, 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.
Is the HS code for Industrial air heater the same in all countries?
The base HS code 732290 for Industrial air heater is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for industrial air heater in Brazil?
Brazil splits HS 732290 into 2 NCM codes, so the right one for industrial air heater depends on the product's details: 7322.90.10 (Liquid-fuel air heaters for motor vehicles), 7322.90.90 (Other air heaters, hot air distributors and parts).