NAICS 333413 Quarterly Industry Report
Industrial and Commercial Fan and Blower and Air Purification Equipmen
Comprehensive industry research for valuation professionals, business owners, buyers, and lenders
NAICS Code: 333413Sector: 33Updated: Q1 2026
About This Report
This Fair Market Value industry report covers NAICS 333413 (Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing) using the 2022 North American Industry Classification System. Data sources include the U.S. Census Bureau[5] NAICS classification, Bureau of Labor Statistics[6] manufacturing employment data, and SBA size standard tables. Content addresses industry structure, product scope, and market dynamics for establishments primarily engaged in manufacturing ventilation and air quality equipment for industrial and commercial applications.
Industry Snapshot
Key metrics for the industrial and commercial fan and blower and air purification equipmen industry.
Industry Definition & Overview
Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing (NAICS 333413) encompasses establishments primarily engaged in manufacturing stationary air purification equipment and industrial ventilation components. Products include dust and fume collection systems, electrostatic precipitators, industrial exhaust fans, centrifugal blowers, warm air furnace filters, air washers, and commercial ventilation equipment. Per the Census Bureau[5], this classification covers stationary industrial-grade equipment rather than household fans or portable air purifiers.
Manufacturing processes combine sheet metal fabrication, motor integration, impeller balancing, and electronic control system assembly. Fan and blower producers machine and balance rotating components to tight tolerances, ensuring vibration-free operation at high speeds. Air purification equipment manufacturers design filtration media, housing systems, and airflow distribution to meet EPA emission standards and OSHA workplace exposure limits. Workforce requirements include mechanical engineers, sheet metal workers, industrial electricians, and air quality specialists.
Geographic distribution follows industrial manufacturing activity. Facilities concentrate in the Midwest, Southeast, and Mid-Atlantic regions near industrial customers requiring ventilation and dust collection systems. According to BLS data[6], manufacturing employment distributes across states with established industrial infrastructure. Customer markets span manufacturing plants, food processing facilities, pharmaceutical operations, commercial buildings, and mining operations that require air quality management systems meeting regulatory compliance standards.
What's Included in This Industry
- Industrial and commercial exhaust fans
- Centrifugal blowers and axial flow fans
- Dust and fume collection equipment
- Electrostatic precipitation systems
- Warm air furnace filters and filter assemblies
- Air washers and humidity control devices
- Industrial ventilation system components
- Attic fans for commercial building ventilation
- Air handling units with filtration components
- Custom fan and blower assemblies for OEM applications
NAICS Classification Hierarchy
| Level | Description | Code |
|---|---|---|
| Subsector | Machinery Manufacturing | 333 |
| Industry Group | Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing | 3334 |
| NAICS Industry | Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing | 33341 |
| National Industry | Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing | 333413 |
Related NAICS Codes
| Code | Description | Relationship |
|---|---|---|
| 333414 | Heating Equipment (except Warm Air Furnaces) Manufacturing | Manufactures heating equipment including boilers, stoves, and baseboard heaters, sharing HVAC industry group classification and sheet metal fabrication capabilities but focusing on heat generation rather than air movement |
| 333415 | Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing | Produces air conditioning, warm air heating, and commercial refrigeration equipment as complete systems, while NAICS 333413 covers individual ventilation and air purification components |
| 333912 | Air and Gas Compressor Manufacturing | Manufactures air and gas compressors sharing pneumatic engineering expertise and industrial customer markets with fan and blower producers, with compressor technology complementing ventilation systems |
| 332420 | Metal Tank (Heavy Gauge) Manufacturing | Produces metal tanks, vessels, and ductwork components that integrate with air handling and dust collection systems manufactured under NAICS 333413 as structural enclosures |
| 335314 | Relay and Industrial Control Manufacturing | Manufactures relay and industrial control equipment including motor starters, variable frequency drives, and control panels that regulate fan and blower operation in ventilation systems |
| 333994 | Industrial Process Furnace and Oven Manufacturing | Produces industrial process furnaces and ovens that require integrated ventilation, exhaust, and air purification systems manufactured by NAICS 333413 establishments for emission control |
Geographic Concentration
Top states by share of national establishments.
| # | State | % Est. | Total Est. |
|---|---|---|---|
| 1 | California | 10.2% | 47 |
| 2 | Texas | 8.2% | 38 |
| 3 | Florida | 7.8% | 36 |
| 4 | North Carolina | 6.5% | 30 |
| 5 | Illinois | 6.3% | 29 |
| 6 | Ohio | 5.6% | 26 |
| 7 | Michigan | 5.4% | 25 |
| 8 | Wisconsin | 4.3% | 20 |
| 9 | Pennsylvania | 3.9% | 18 |
| 10 | Indiana | 3.5% | 16 |
% Of Establishments
0%
10%
Source: County Business Patterns, U.S. Census Bureau[3]
SBA Lending Summary
32
Total SBA Loans
$68.8M
Total Loan Volume
$2.1M
Average Loan Size
14 yrs
Average Loan Term
9.56%
Average Interest Rate
568
Jobs Supported
Source: SBA 7(a) Program Data, U.S. Small Business Administration — FY 2025[4]
Key Insight: The Small Business Administration[7] sets the size standard for NAICS 333413 at 500 employees. Firms averaging 500 or fewer employees over the preceding 12 months qualify as small businesses for SBA loan programs, federal contracting set-asides, and small business certifications. This threshold applies to establishments where fan, blower, or air purification equipment production represents the primary business activity. Eligible businesses can access SBA 7(a) loans[8] for working capital, equipment, and acquisition financing, while 504 loans[9] support major fixed-asset purchases including real estate and heavy machinery.
Top SBA Lenders
| # | Lender | Loans | Volume | Avg Loan |
|---|---|---|---|---|
| 1 | Live Oak Banking Company | 8 | $40.0M | $5.0M |
| 2 | Readycap Lending, LLC | 8 | $24.0M | $3.0M |
| 3 | First Savings Bank | 8 | $2.8M | $350K |
| 4 | TD Bank, National Association | 8 | $2.0M | $250K |
Frequently Asked Questions
Common questions about this industry.
What types of businesses are classified under NAICS 333413?
NAICS 333413 classifies establishments primarily engaged in manufacturing industrial fans, centrifugal blowers, dust collection systems, electrostatic precipitators, and air filtration equipment for commercial and industrial applications. The Census Bureau[5] distinguishes this from household fans (NAICS 335220) and complete HVAC systems (NAICS 333415).
How is the fan and air purification equipment manufacturing industry structured?
Large manufacturers produce standard product lines of fans, blowers, and dust collectors distributed through industrial supply channels. Mid-size firms specialize in specific applications such as high-temperature exhaust fans, cleanroom filtration, or mining ventilation systems. Smaller manufacturers build custom equipment for unique industrial processes requiring non-standard airflow, pressure, or filtration specifications.
What is the SBA size standard for fan and air purification equipment manufacturers?
The SBA sets the size standard at 500 employees for NAICS 333413. Firms at or below this threshold qualify as small businesses for federal contracting preferences and SBA lending programs. Details appear in the SBA size standards table[7].
What NAICS codes are closely related to fan and air purification equipment manufacturing?
NAICS 333414 covers heating equipment sharing the HVAC industry group. NAICS 333415 covers complete air conditioning and refrigeration systems. Most 333912 covers air compressors sharing pneumatic engineering. These adjacent codes reflect shared manufacturing capabilities, supply chains, and customer relationships with ventilation equipment production.
What industries depend on fan and air purification equipment manufacturers?
Manufacturing plants purchase dust collection and ventilation systems for OSHA compliance. Food processing facilities require clean air handling for sanitation standards. Per BLS data[6], industrial manufacturing employs millions of workers in facilities that depend on ventilation and air quality equipment for safe working conditions.
What activities does NAICS 333413 include?
Covered products include exhaust fans, centrifugal blowers, axial fans, dust collectors, electrostatic precipitators, furnace filters, air washers, and air handling components. Manufacturing activities span sheet metal fabrication, impeller balancing, motor integration, and control system assembly. Excluded items include household fans (NAICS 335220), complete HVAC units (NAICS 333415), and portable air purifiers (NAICS 335220).
Are fan and air purification equipment manufacturers eligible for SBA loans?
Yes, manufacturers meeting the 500-employee threshold qualify for SBA 7(a) loans, 504 loans, and federal contracting set-asides. The SBA funding programs[10] page details eligibility for manufacturing businesses seeking capital for production equipment, facility expansion, and working capital.
Where is fan and air purification equipment manufacturing concentrated in the United States?
Facilities concentrate in Midwest and Southeast industrial regions with established manufacturing infrastructure. Ohio, Pennsylvania, and Illinois host notable concentrations of ventilation equipment producers. According to BLS employment data[6], manufacturing employment clusters in states with skilled labor pools, metal fabrication supply chains, and proximity to industrial customers requiring air quality management systems.
Sources & References
Government datasets and editorial sources used in this report.
- [1]U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages bls.gov
- [2]U.S. Census Bureau, Economic Census census.gov
- [3]U.S. Census Bureau, County Business Patterns census.gov
- [4]U.S. Small Business Administration, SBA 7(a) Loan Program Data data.sba.gov
- [5]Census Bureau census.gov
- [6]BLS data bls.gov
- [7]Small Business Administration sba.gov
- [8]SBA 7(a) loans sba.gov
- [9]504 loans sba.gov
- [10]SBA funding programs sba.gov
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