NAICS Code 333415 — Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is one of 3 national industries under 33341 (Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing).

Code	333415
Title	Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	1,250 employees

Official definition (2022 NAICS)

This U.S. industry comprises establishments primarily engaged in (1) manufacturing air-conditioning (except motor vehicle) and warm air furnace equipment and/or (2) manufacturing commercial and industrial refrigeration and freezer equipment.

Illustrative Examples:

Air-conditioning and warm air heating combination units manufacturing

Air-conditioning compressors (except motor vehicle) manufacturing

Air-conditioning condensers and condensing units manufacturing

Dehumidifiers (except portable electric) manufacturing

Heat pumps manufacturing

Humidifying equipment (except portable) manufacturing

Refrigerated counter and display cases manufacturing

Refrigerated drinking fountains manufacturing

Snow making machinery manufacturing

Soda fountain cooling and dispensing equipment manufacturing

Is a business under 333415 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 333415 qualifies as a small business if it does not exceed 1,250 employees. Small-business status determines eligibility for federal set-aside contracts, SAM.gov certifications and SBA loan programs — employee count is averaged over the latest 24 months.

Where 333415 sits in the hierarchy

Level	Code	Title
Sector	31-33	Manufacturing
Subsector	333	Machinery Manufacturing
Industry Group	3334	Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing
NAICS Industry	33341	Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing
National Industry	333415	Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing

Related SIC codes

Via the official U.S. Census concordance (1987 SIC ↔ NAICS), shown only where the industry definition is unchanged in NAICS 2022.

SIC code	Title
2499	Wood Products, Not Elsewhere Classified
3443	Fabricated Plate Work (Boiler Shops)
3444	Sheet Metal Work
3585	Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment

Related National Industry codes

• 333413 — Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing
• 333414 — Heating Equipment (except Warm Air Furnaces) Manufacturing

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.