NAICS 333413
Overview
The North American Industry Classification System (NAICS) is the federal standard for classifying business establishments so agencies can collect, analyze, and publish statistics about the U.S. economy. Developed under the Office of Management and Budget and adopted in 1997 to replace SIC, NAICS is jointly maintained with Canada and Mexico and is updated on a five-year cycle; the current vintage is 2022. 1
U.S. manufacturing establishments in NAICS 333413 are classified to Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing. Census materials identify this 2022 national industry for producers of industrial/commercial fans and blowers as well as stationary air purification equipment. 2
What this NAICS covers
- Manufacturing industrial and commercial exhaust and ventilating fans. 2
- Manufacturing attic fans and commercial blowers. 2
- Manufacturing stationary air purification equipment for industrial and commercial use. 2
- Manufacturing industrial dust and fume collection equipment. 2
- Manufacturing electrostatic precipitation equipment for stationary air purification. 2
- Manufacturing warm-air furnace filters and air washer equipment. 2
Related NAICS and PSC codes
| Type | Code | Descriptor |
|---|---|---|
| NAICS | 333414 | Heating Equipment (except Warm Air Furnaces) Manufacturing |
| NAICS | 333415 | Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing |
| PSC | 4140 | Fans, Air Circulators, and Blower Equipment |
| PSC | 4460 | Air Purification Equipment |
2022 NAICS update note
Census implemented 2022 NAICS across economic programs starting with the 2022 Economic Census. Bridge/Comparative materials are provided to relate 2017 to 2022 industries for affected sectors. 3
Frequently asked questions
-
What types of products are included in NAICS 333413?
Industrial/commercial fans and blowers (e.g., exhaust and ventilating fans, attic fans) and stationary air purification equipment (e.g., dust/fume collection, electrostatic precipitation, warm-air furnace filters, and air washers) fall under this industry. 2 -
What products are specifically excluded?
Household-type fans and portable air purifiers are in NAICS 335211; motor-vehicle air-conditioning systems are NAICS 336391; complete air-conditioning and warm-air heating units are NAICS 333415. Cross-references appear in the official NAICS listing. 2 -
How is NAICS 333413 used in federal statistics?
Census tabulates industry data using the 2022 NAICS structure. The 2022 Economic Census and subsequent releases adopt 2022 NAICS and provide Bridge/Comparative materials to relate 2017 to 2022 industry definitions. 3 -
What PSCs commonly appear with NAICS 333413 items?
Product buys often use PSC 4140 (fans/blowers) or PSC 4460 (air purification equipment). Official PSC definitions, inclusions, and exclusions are maintained in the PSC Manual. 5 -
What is the small-business size standard for NAICS 333413?
SBA assigns industry size standards by NAICS; manufacturing industries typically have employee-based thresholds. Always verify the current threshold for 333413 in SBA’s Table of Small Business Size Standards. 4
Useful resources
- G2X — NAICS 333413
- Census: NAICS Codes & Understanding Industry Classification Systems
- Census: Implementation of the 2022 NAICS (timeline and Bridge/Comparative materials)
- SBA: Table of Small Business Size Standards
- Acquisition.gov: Product and Service Code (PSC) Manual (April 2025)
References
- U.S. Census Bureau — Economic Census: NAICS Codes & Understanding Industry Classification Systems (2022 guidance). https://www.census.gov/programs-surveys/economic-census/year/2022/technical-documentation/code-lists/understanding-naics-redirect.html
- U.S. Census Bureau — NAICS 2022 Search: 333413 (Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing). https://www.census.gov/naics/?input=333413&year=2022
- U.S. Census Bureau — Implementation of the 2022 NAICS; 2022 Economic Census Bridge/Comparative materials. https://www.census.gov/library/reference/code-lists/naics/2022/implementation-timeline.html
- U.S. Small Business Administration — Table of Small Business Size Standards. https://www.sba.gov/document/support/table-size-standards
- Acquisition.gov — Product and Service Code (PSC) Manual, April 2025 (PDF). https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf
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