NAICS 333912

Overview

The North American Industry Classification System (NAICS) is the federal standard for classifying business establishments to collect, analyze, and publish statistics about the U.S. economy. Developed under the Office of Management and Budget in cooperation with Canada and Mexico, NAICS replaced the SIC system in 1997 to improve cross-country comparability in business statistics and modernize industry definitions. ¹

In the 2022 NAICS vintage, 333912 denotes Air and Gas Compressor Manufacturing. Establishments in this industry primarily manufacture general‑purpose air and gas compressors and closely related equipment, including specified vacuum pumps. Federal statistical programs and procurement analysts use this code to identify and benchmark compressor manufacturing activity across industrial and commercial applications. ²

What this NAICS covers

• General‑purpose air and gas compressors for industrial and commercial use. ²
• Reciprocating (piston) air and gas compressor units. ²
• Centrifugal air and gas compressors. ²
• Vacuum pumps (except laboratory types). ²
• Nonagricultural spraying and dusting compressors. ²
• Spray‑gun compressor units and assemblies. ²

Related NAICS and PSC codes

Type	Code	Descriptor
NAICS	333996	Fluid Power Pump and Motor Manufacturing
NAICS	333415	Air‑Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
PSC	4310	Compressors and Vacuum Pumps
PSC	J043	Maintenance, Repair, and Rebuilding of Equipment—Pumps and Compressors

Exclusions and borderlines

• Refrigeration and non‑vehicle air‑conditioning systems and their compressors are classified in NAICS 333415, not 333912. ²
• Motor‑vehicle air‑conditioning systems and compressors fall under NAICS 336391. ²
• Fluid power (hydraulic or pneumatic) pumps and motors are covered by NAICS 333996. ²
• Agricultural spraying and dusting equipment manufacturing is classified in NAICS 333111. ²
• Laboratory vacuum pumps are excluded from 333912 and classified elsewhere. ²

2022 NAICS adoption and data access

• Census programs began publishing statistics on the 2022 NAICS basis with the 2022 Economic Census; remaining programs transition through 2027. ³
• Manufacturing statistics for the 2022 Economic Census (Sector 31–33), including industries within 333912, are available via the 2022 Manufacturing data tables. ⁶

Frequently asked questions

• What products are included under NAICS 333912?
  Establishments in 333912 manufacture general‑purpose air and gas compressors (reciprocating and centrifugal), vacuum pumps other than laboratory types, and nonagricultural spray compressors and spray‑gun units. ²

• How does NAICS 333912 differ from 333911?
  333911 covers general‑purpose pumps and pumping equipment (except fluid power), while 333912 covers air and gas compressors and specified vacuum pumps; NAICS cross‑references direct non‑laboratory vacuum pumps to 333912. ²

• Are laboratory vacuum pumps part of 333912?
  No. Laboratory vacuum pumps are excluded from 333912. The NAICS description specifies vacuum pumps “except laboratory types,” indicating such products are classified elsewhere. ²

• Which PSCs align to federal buys for compressors under 333912?
  Common PSCs include supply class 4310 for compressors and vacuum pumps and service codes such as J043 for maintenance/repair and K043 for modifications. Agencies may also use related installation or overhaul codes based on scope. ⁴

• Where can official 2022 data for this industry be found?
  Census publishes 2022 Economic Census Manufacturing tables on a 2022 NAICS basis; filter Sector 31–33 tables to the 6‑digit level to analyze 333912. ⁶

Useful resources

• G2X — NAICS 333912 overview
• Census: Implementation of the 2022 NAICS (timeline and program adoption). ³
• Census: 2022 Economic Census — Manufacturing (Sector 31–33) data tables. ⁶
• Census: Understanding NAICS and industry classification. ⁷

References

1. U.S. Census Bureau, 2017 North American Industry Classification System (NAICS) Manual. https://www.census.gov/library/publications/2017/econ/2017-naics-manual.html
2. U.S. Census Bureau, NAICS 2022 Industry 333912 — Air and Gas Compressor Manufacturing. https://www.census.gov/naics/?input=333912&year=2022&details=333912
3. U.S. Census Bureau, Implementation of the 2022 NAICS (timeline and impacts). https://www.census.gov/library/reference/code-lists/naics/2022/implementation-timeline.html
4. U.S. General Services Administration, Product and Service Code (PSC) Manual. https://www.acquisition.gov/psc-manual
6. U.S. Census Bureau, 2022 NAICS Sector 31–33 Manufacturing — 2022 Economic Census tables. https://www.census.gov/data/tables/2022/econ/economic-census/naics-sector-31-33.html
7. U.S. Census Bureau, Economic Census: NAICS Codes & Understanding Industry Classification Systems. https://www.census.gov/programs-surveys/economic-census/technical-documentation/code-lists/understanding-naics-redirect.html