Heading 9032

Automatic regulating or controlling instruments and apparatus; parts and accessories thereof

24 declarable lines

Heading 9032 covers automatic regulating or controlling instruments and apparatus, meaning devices that hold a variable such as temperature, pressure, flow or voltage at a set value, plus their parts and accessories. The heading splits first by article type: thermostats in 9032.10, manostats in 9032.20, other hydraulic and pneumatic controllers in 9032.81, all other controllers in 9032.89, and parts in 9032.90. Within those groups the rate depends on the end use, such as air conditioning, refrigeration or heating, industrial process control, or use in a 6, 12 or 24 V system.

Products in this heading

Wall-mounted thermostats for heating and air conditioning systems
Manostats, also sold as pressure switches
Hydraulic industrial process control instruments
Pneumatic process controllers for industrial lines
Automatic voltage regulators designed for 6, 12 or 24 V systems
Complete temperature control systems for process control
Humidity control instruments used in process control
Replacement parts for thermostats and manostats

How to choose the right subheading

Whether the device automatically regulates or controls a variable, rather than only measuring or displaying it
The variable being controlled: temperature, pressure, voltage, flow, liquid level or humidity
For non-thermostat controllers, whether the mechanism is hydraulic, pneumatic or other
The end use stated for the goods, such as HVAC, industrial process control, or a 6, 12 or 24 V system
Whether the item is a complete system, a component instrument, or a part or accessory

Often confused with

Thermometers and barometers that only display a reading
Heading 9032 requires automatic regulating or controlling, not just measuring.
Heading 9025
Pressure gauges and manometers
Gauges that only indicate pressure are measuring instruments, not controllers.
Heading 9026
Electricity supply meters
Meters that record consumption belong to 9028, not to controllers.
Heading 9028
Oscilloscopes and other electrical quantity measuring instruments
These check electrical quantities rather than automatically regulate them.
Heading 9030
Machines for testing hardness or strength of materials
Material testing equipment is classified in 9024.
Heading 9024

Frequently asked questions

What is the HTS code for a wall-mounted thermostat?

Wall-mounted thermostats for air conditioning, refrigeration or heating systems are classified under 9032.10.00.30, with a general (MFN) rate of 1.7%.

What is the duty on an automatic voltage regulator for a 12 V system?

Automatic voltage and voltage-current regulators designed for use in a 6, 12 or 24 V system fall under 9032.89.20.00, with a general (MFN) rate of 1.1%.

How do I classify parts of thermostats?

Parts of thermostats are classified under 9032.90.61.20, with a general (MFN) rate of 1.7%. Parts of manostats go under 9032.90.61.40 at the same 1.7% general (MFN) rate.

Guide written from the official schedule text. Rates quoted are general (MFN) rates; check the line page for trade agreement rates and the classification of your exact product.