Product classification
HS code for Gas heater: 7321.81
Domestic appliances, non-electric, (other than cookers and plate warmers), for gas fuel or for both gas and other fuels, of iron or steel.
Classification of gas heater under HS 7321.81
Gas heaters for domestic use are classified under HS code 732181. This code is part of Chapter 73, which covers articles of iron or steel. Specifically, heading 7321 includes stoves, ranges, grates, cookers, and similar non-electric domestic appliances. The subheading 81 is dedicated to appliances that utilize gas fuel or both gas and other fuels. To fall under this classification, the heater must be a non-electric appliance designed for domestic purposes. While these units may contain minor electrical components for ignition or fans, their primary source of heat must be the combustion of gas. Industrial-grade heaters or those designed for central heating systems are generally excluded from this heading and are classified under Chapter 84. The material composition (iron or steel) is also a defining factor for this chapter.
- Covers
- Domestic gas space heaters
- Portable gas heaters for indoor use
- Gas-fired patio heaters
- Gas fireplaces (non-electric)
- Radiant gas heaters for home use
- Also under 7321.81
Rinnai gas water heaters (non-electric models), Mr. Heater portable gas heaters, Napoleon gas fireplaces (manual ignition), Patio Heater USA gas patio heaters
Codes often confused with 7321.81
Common mistake. One of the most frequent misclassifications occurs with HS code 851629, which covers electric space heating apparatus. If a heater is primarily electric, it belongs in Chapter 85. Another common error is confusing domestic gas heaters with central heating boilers, which are classified under HS code 840310. Furthermore, if the gas heater is designed for industrial use rather than domestic use, it may be classified under 841989. It is essential to distinguish between appliances used for cooking (7321.11) and those used for space heating (7321.81).
Top exporters and importers of HS 732181 (the code used for gas heater), 2025
In 2025, the largest exporter of HS 732181 (the code used for gas heater) in UN Comtrade data was China, with 44% of world exports; the largest importer in UN Comtrade data was the United States, with 38% 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 732181, not only gas heater.
Top exporters 2025 · share of world exports
- 1 China $270M 44% of world exports
- 2 Canada $53M 8.6% of world exports
- 3 Vietnam* ~$51M 8.2% of world exports · partner records ↗
World total: $618M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $240M 38% of world imports
- 2 Canada $41M 6.4% of world imports
- 3 Australia $28M 4.4% of world imports
World total: $636M 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 marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. 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 code for gas heater
Brazil classifies gas heater under NCM 7321.81.00: HS 7321.81 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about gas heater
What is the HS code for Gas heater?
The HS code for Gas heater is 732181 (Domestic appliances; non-electric, (other than cookers and plate warmers), for gas fuel or for both gas and other fuels, of iron or steel). The HS code for a domestic gas heater is 732181.
How do I classify Gas heater for customs?
Gas heater is classified under HS code 732181 — Domestic appliances; non-electric, (other than cookers and plate warmers), for gas fuel or for both gas and other fuels, of iron or steel. This is a 6-digit subheading level code.
Are electric heaters with a gas backup classified here?
Generally, no. If the primary heating function is electric, it is classified under 8516. However, if it is a gas appliance with minor electrical parts, 732181 applies.
Which countries are the top exporters of gas heater (HS 732181)?
In 2025, the top exporters of HS 732181 (the code used for gas heater) in UN Comtrade data were China ($270M, 44% of world exports), Canada ($53M) and Vietnam (about $51M). World exports came to about $618M, 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 gas heater (HS 732181)?
In 2025, the top importers of HS 732181 (the code used for gas heater) in UN Comtrade data were the United States ($240M, 38% of world imports), Canada ($41M) and Australia ($28M). World imports came to about $636M, 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 Gas heater the same in all countries?
The base HS code 732181 for Gas 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 gas heater in Brazil?
In Brazil, gas heater (HS 732181) is classified under NCM 7321.81.00.