Product classification
HS code for Instant gas water heater: 8419.11
Heaters, instantaneous gas water heaters, for domestic or other purposes.
Classification of instant gas water heater under HS 8419.11
Instantaneous gas water heaters are classified under HS code 8419.11. This classification is based on the mechanical function of the device and its energy source. Heading 8419 covers machinery and plant equipment, whether or not electrically heated, for the treatment of materials by a process involving a change of temperature. Subheading 8419.11 is specifically designated for instantaneous gas water heaters. These devices are defined by their ability to heat water immediately as it flows through the heat exchanger, without the need for a storage tank. Under General Rule of Interpretation (GRI) 1, the classification is straightforward because the product description matches the subheading text exactly. The heaters must use gas (such as natural gas or LPG) as the primary fuel source to fall under this specific code. The classification applies to both domestic models used in homes and larger industrial versions, provided they operate on the instantaneous principle. The distinction between instantaneous and storage heaters is critical, as storage heaters are classified elsewhere based on their design and heating method.
- Covers
- Tankless natural gas water heaters
- LPG-powered portable camping showers
- Wall-mounted gas boilers for instantaneous domestic hot water
- Industrial gas-fired instantaneous water heating units
- Also under 8419.11
- Rinnai tankless water heaters
- Noritz tankless water heaters
- Rheem tankless water heaters
- Bosch tankless water heaters
- Takagi tankless water heaters
Codes often confused with 8419.11
Common mistake. Instant gas water heaters are frequently confused with 8516.10, which is the code for electric instantaneous or storage water heaters. If the unit uses electricity as the heat source, it must be moved to Chapter 85. They are also sometimes misclassified under 8419.19, which is the residual category for non-gas instantaneous heaters (such as solar or solid fuel heaters).
Top exporters and importers of HS 841911 (the code used for instant gas water heater), 2025
In 2025, the largest exporter of HS 841911 (the code used for instant gas water heater) in UN Comtrade data was China, with 27% of world exports; the largest importer in UN Comtrade data was the United States, with 45% 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 841911, not only instant gas water heater.
Top exporters 2025 · share of world exports
- 1 China $450M 27% of world exports
- 2 Japan $387M 23% of world exports
- 3 South Korea $375M 22% of world exports
World total: $1.7B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $754M 45% of world imports
- 2 Mexico $150M 9.0% of world imports
- 3 Canada $113M 6.8% of world imports
World total: $1.7B 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 code for instant gas water heater
Brazil classifies instant gas water heater under NCM 8419.11.00: HS 8419.11 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about instant gas water heater
What is the HS code for Instant gas water heater?
The HS code for Instant gas water heater is 841911 (Heaters; instantaneous gas water heaters, for domestic or other purposes). The specific HS code for instantaneous water heaters powered by gas is 8419.11.
How do I classify Instant gas water heater for customs?
Instant gas water heater is classified under HS code 841911 — Heaters; instantaneous gas water heaters, for domestic or other purposes. This is a 6-digit subheading level code.
Does this code include gas heaters with a storage tank?
No, gas water heaters with storage tanks are generally classified under 8419.19 or 7321 depending on their construction and capacity.
Which countries are the top exporters of instant gas water heater (HS 841911)?
In 2025, the top exporters of HS 841911 (the code used for instant gas water heater) in UN Comtrade data were China ($450M, 27% of world exports), Japan ($387M) and South Korea ($375M). World exports came to about $1.7B, 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 instant gas water heater (HS 841911)?
In 2025, the top importers of HS 841911 (the code used for instant gas water heater) in UN Comtrade data were the United States ($754M, 45% of world imports), Mexico ($150M) and Canada ($113M). World imports came to about $1.7B, 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 Instant gas water heater the same in all countries?
The base HS code 841911 for Instant gas water 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 instant gas water heater in Brazil?
In Brazil, instant gas water heater (HS 841911) is classified under NCM 8419.11.00.