2022 NAICS industry in sector 31-33 Manufacturing
33341 Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing
NAICS 33341 is the US industry code for ventilation, heating, air-conditioning, and commercial refrigeration equipment manufacturing. It covers establishments primarily engaged in manufacturing ventilating, heating, air-conditioning, and commercial and industrial refrigeration and freezer equipment.
Official definition
This industry comprises establishments primarily engaged in manufacturing ventilating, heating, air-conditioning, and commercial and industrial refrigeration and freezer equipment.
Examples Census gives
- Air-conditioner filters manufacturing
- Air-conditioning and warm air heating combination units manufacturing
- Attic fans manufacturing
- Dust and fume collecting equipment manufacturing
- Gas fireplaces manufacturing
- Heating boilers manufacturing
- Industrial and commercial-type fans manufacturing
- Refrigerated counter and display cases manufacturing
- Refrigerated drinking fountains manufacturing
- Space heaters (except portable electric) manufacturing
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Manufacturing household-type fans (except attic), portable electric space heaters, humidifiers, dehumidifiers, and air purification equipment are classified in Industry 33521, Small Electrical Appliance Manufacturing.
- Manufacturing household-type appliances, such as cooking stoves, ranges, refrigerators, and freezers are classified in Industry 33522, Major Household Appliance Manufacturing.
- Manufacturing commercial-type cooking equipment are classified in Industry 33331, Commercial and Service Industry Machinery Manufacturing.
- Manufacturing industrial, power, and marine boilers are classified in Industry 33241, Power Boiler and Heat Exchanger Manufacturing.
- Manufacturing industrial process furnaces and ovens are classified in Industry 33399, All Other General Purpose Machinery Manufacturing.
- Manufacturing motor vehicle air-conditioning systems and compressors are classified in Industry 33639, Other Motor Vehicle Parts Manufacturing.
Codes in 33341
Data last changed November 14, 2026. How this page is built.