2022 NAICS national industry in sector 31-33 Manufacturing

334512 Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use

NAICS 334512 is the US industry code for automatic environmental control manufacturing for residential, commercial, and appliance use. This U.S.

Code: 334512 (2022 NAICS)
Title: Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use
Part of: Navigational, Measuring, Electromedical, and Control Instruments Manufacturing
SBA small business limit: Up to 650 employees
Closest UK SIC: 26511, 26512, 26513, 26514 (details)

Changes coming. The NAICS 2027 revision applies to data from 1 January 2027, and SBA proposed new size standards on 20 August 2026. The values on this page are the ones in force today; we update this page when the official files change.

Official definition

This U.S. industry comprises establishments primarily engaged in manufacturing automatic controls and regulators for applications, such as heating, air-conditioning, refrigeration, and appliances.

Source: US Census Bureau, 2022 NAICS descriptions.

When to use a different code

Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:

Manufacturing industrial process controls are classified in U.S. Industry 334513, Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables.
Manufacturing motor control switches and relays are classified in U.S. Industry 335314, Relay and Industrial Control Manufacturing.
Manufacturing switches for appliances are classified in U.S. Industry 335931, Current-Carrying Wiring Device Manufacturing.
Manufacturing appliance timers are classified in U.S. Industry 334519, Other Measuring and Controlling Device Manufacturing.

Source: US Census Bureau, 2022 NAICS cross-references.

Activities listed under 334512

The Census index assigns these 56 activities to this code. If your business matches one, this is your code.

Air flow controllers (except valves), air-conditioning and refrigeration, manufacturing
Appliance controls manufacturing
Appliance regulators (except switches) manufacturing
Building services monitoring controls, automatic, manufacturing
Clothes dryer controls, including dryness controls, manufacturing
Combination limit and fan controls manufacturing
Combination oil and hydronic controls manufacturing
Computerized environmental control systems for buildings manufacturing
Damper operators (e.g., electric, pneumatic, thermostatic) manufacturing
Electric air cleaner controls, automatic, manufacturing
Electric heat proportioning controls, modulating controls, manufacturing
Electric space heater controls, automatic, manufacturing
Energy cutoff controls, residential and commercial types, manufacturing
Fan controls, temperature responsive, manufacturing
Flame safety controls for furnaces and boilers manufacturing
Float controls, residential and commercial types, manufacturing
Gas burner automatic controls (except valves) manufacturing
Gradual switches, pneumatic, manufacturing
Heating and cooling system controls, residential and commercial, manufacturing
Heating regulators manufacturing
Humidistats (e.g., duct, skeleton, wall) manufacturing
Humidity controls, air-conditioning-type, manufacturing
Hydronic circulator control, automatic, manufacturing
Hydronic limit control manufacturing
Hydronic limit, pressure, and temperature controls, manufacturing
Ice bank controls manufacturing
Ice maker controls manufacturing
Ignition controls for gas appliances and furnaces, automatic, manufacturing
In-built thermostats, filled system and bimetal types, manufacturing
Incinerator control systems, residential and commercial-type, manufacturing
Light responsive appliance controls manufacturing
Limit controls (e.g., air-conditioning, appliance, heating) manufacturing
Line or limit control for electric heat manufacturing
Liquid level controls, residential and commercial heating-type, manufacturing
Oven temperature controls, nonindustrial, manufacturing
Pneumatic relays, air-conditioning-type, manufacturing
Pressure controllers, air-conditioning system-type, manufacturing
Pressurestats manufacturing
Primary oil burner controls (e.g., cadmium cells, stack controls) manufacturing
Refrigeration controls, residential and commercial-type, manufacturing
Refrigeration thermostats manufacturing
Refrigeration/air-conditioning defrost controls manufacturing
Room thermostats manufacturing
Sequencing controls for electric heating equipment manufacturing
Static pressure regulators manufacturing
Steam pressure controls, residential and commercial heating-type, manufacturing
Surface burner controls, temperature, manufacturing
Switches, pneumatic positioning remote, manufacturing
Switches, thermostatic, manufacturing
Temperature controls, automatic, residential and commercial-types, manufacturing
Temperature sensors for motor windings manufacturing
Thermocouples, glass vacuum, manufacturing
Thermostats (e.g., air-conditioning, appliance, comfort heating, refrigeration) manufacturing
Time program controls, air-conditioning systems, manufacturing
Vapor heating controls manufacturing
Water heater controls manufacturing

Source: US Census Bureau, 2022 NAICS index file.

SBA size standard for 334512

To count as a small business for SBA loans and federal contracts under NAICS 334512, your business (including affiliates) must not exceed 650 employees. Check your business.

Source: SBA table of size standards, effective March 17, 2023.

Closest UK SIC 2007 codes

There is no official one-to-one link between NAICS and UK SIC. These codes share the same international class (ISIC Rev. 4: 2651), so treat them as a starting point and check the definition.

Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.

Similar codes to compare

Data last changed November 14, 2026. How this page is built.