NAICS 333415 Quarterly Industry Report
Air-Conditioning and Warm Air Heating Equipment and Commercial and Ind
Comprehensive industry research for valuation professionals, business owners, buyers, and lenders
NAICS Code: 333415Sector: 33Updated: Q1 2026
About This Report
This Fair Market Value industry report covers NAICS 333415 (Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration 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 competitive dynamics for this major machinery manufacturing sector.
Industry Snapshot
Key metrics for the air-conditioning and warm air heating equipment and commercial and ind industry.
Industry Definition & Overview
Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (NAICS 333415) encompasses establishments primarily engaged in manufacturing complete heating, cooling, and refrigeration systems for residential, commercial, and industrial applications. Products include central air conditioning units, warm air furnaces, heat pumps, commercial refrigeration display cases, industrial freezers, walk-in coolers, and combination heating and cooling systems. Per the Census Bureau[5], this classification covers complete equipment systems rather than individual ventilation components or household refrigerators.
This industry ranks among the largest machinery manufacturing sectors by employment and revenue. Manufacturing processes require sheet metal fabrication, refrigerant system brazing, compressor assembly, electronic control integration, and extensive performance testing. Products must meet DOE energy efficiency standards, EPA refrigerant management regulations, and UL safety certifications. Workforce needs include refrigeration engineers, HVAC system designers, sheet metal fabricators, brazing technicians, and quality assurance specialists who verify performance across temperature and humidity ranges.
Geographic distribution spans the entire country, with manufacturing facilities positioned near major construction markets. According to BLS data[6], manufacturing employment distributes across states with established industrial capacity. Texas, Tennessee, and the Southeast host major HVAC production facilities. Midwest states support commercial refrigeration manufacturing near food processing and distribution customers. Seasonal demand patterns influence production scheduling, with heating equipment production peaking before winter and cooling equipment before summer months.
What's Included in This Industry
- Central air conditioning units and split systems
- Warm air furnaces (gas, oil, and electric)
- Heat pump systems and components
- Commercial refrigerated display cases and merchandisers
- Industrial walk-in coolers and freezers
- Rooftop HVAC combination units
- Air conditioning compressors (non-motor vehicle)
- Condensing units and evaporator coils
- Cooling towers and chillers
- Soda fountain cooling and dispensing equipment
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 | Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing | 333415 |
Related NAICS Codes
| Code | Description | Relationship |
|---|---|---|
| 333413 | Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing | Manufactures industrial fans, blowers, and air purification equipment as individual ventilation components, while NAICS 333415 produces complete air conditioning and heating systems incorporating these components |
| 333414 | Heating Equipment (except Warm Air Furnaces) Manufacturing | Produces heating equipment including boilers, stoves, and baseboard heaters, covering non-furnace heating products that complement the warm air furnace systems classified under NAICS 333415 |
| 333912 | Air and Gas Compressor Manufacturing | Manufactures air and gas compressors including refrigeration compressors sold separately, while NAICS 333415 produces complete systems with integrated compressors for HVAC applications |
| 335220 | Major Household Appliance Manufacturing | Produces major household appliances including household refrigerators and freezers, while NAICS 333415 covers commercial and industrial refrigeration equipment for business applications |
| 332410 | Power Boiler and Heat Exchanger Manufacturing | Manufactures heat exchangers and power boilers sharing thermal engineering expertise and metal fabrication capabilities with HVAC equipment producers building coils and condensers |
| 334513 | Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables | Produces industrial process control instruments including thermostats, pressure switches, and building automation sensors that regulate HVAC and refrigeration equipment operation |
Geographic Concentration
Top states by share of national establishments.
| # | State | % Est. | Total Est. |
|---|---|---|---|
| 1 | Texas | 10.7% | 88 |
| 2 | California | 10.1% | 83 |
| 3 | Florida | 6.7% | 55 |
| 4 | Pennsylvania | 5.1% | 42 |
| 5 | New York | 4.9% | 40 |
| 6 | Georgia | 4.8% | 39 |
| 7 | Ohio | 4.6% | 38 |
| 8 | Oklahoma | 3.8% | 31 |
| 9 | Michigan | 3.5% | 29 |
| 10 | Illinois | 3.3% | 27 |
% Of Establishments
0%
11%
Source: County Business Patterns, U.S. Census Bureau[3]
SBA Lending Summary
152
Total SBA Loans
$48.6M
Total Loan Volume
$319K
Average Loan Size
11 yrs
Average Loan Term
10.39%
Average Interest Rate
1,440
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 333415 at 1,250 employees. Firms averaging 1,250 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 elevated threshold reflects the capital intensity and scale requirements of HVAC and refrigeration equipment manufacturing, where large production lines and testing facilities characterize competitive operations. 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 | Newtek Bank, National Association | 32 | $13.9M | $434K |
| 2 | OakStar Bank | 24 | $11.2M | $467K |
| 3 | Northeast Bank | 48 | $10.2M | $212K |
| 4 | KeyBank National Association | 8 | $7.0M | $874K |
| 5 | Celtic Bank Corporation | 32 | $3.5M | $110K |
Frequently Asked Questions
Common questions about this industry.
What types of businesses are classified under NAICS 333415?
NAICS 333415 classifies establishments primarily engaged in manufacturing air conditioning systems, warm air furnaces, heat pumps, and commercial refrigeration equipment. The Census Bureau[5] covers complete HVAC and refrigeration systems, distinguishing this from household refrigerators (NAICS 335220) and individual ventilation components (NAICS 333413).
How is the HVAC and refrigeration equipment manufacturing industry structured?
A small number of large multinational corporations dominate residential and light commercial HVAC markets through brand portfolios and extensive distribution networks. Mid-size manufacturers specialize in commercial refrigeration, industrial cooling, or specific product categories. Regional firms serve local construction markets with custom HVAC solutions. The industry concentrates among established players due to high capital requirements for production lines and testing facilities.
What is the SBA size standard for HVAC and refrigeration equipment manufacturers?
The SBA sets the size standard at 1,250 employees for NAICS 333415. 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 HVAC and refrigeration equipment manufacturing?
NAICS 333413 covers fans and air purification components. NAICS 333414 covers non-furnace heating equipment. Market 333912 covers standalone compressors. NAICS 335220 covers household refrigerators. These adjacent codes reflect shared thermal engineering, refrigeration technology, and building equipment customer markets.
What industries depend on HVAC and refrigeration equipment manufacturers?
Residential and commercial construction markets drive demand for heating and cooling systems. Food retailers purchase refrigerated display cases and walk-in coolers. Per BLS data[6], construction and food service employment drives equipment demand across all climate zones in the country.
What activities does NAICS 333415 include?
Covered products include central air conditioners, furnaces, heat pumps, commercial display cases, walk-in coolers, rooftop units, compressors, condensing units, and cooling towers. Manufacturing activities span sheet metal fabrication, refrigerant system brazing, compressor assembly, and performance testing. Excluded items include motor vehicle air conditioning (NAICS 336390), household refrigerators (NAICS 335220), and portable electric heaters (NAICS 335220).
Are HVAC and refrigeration equipment manufacturers eligible for SBA loans?
Yes, manufacturers meeting the 1,250-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 lines, testing equipment, and working capital.
Where is HVAC and refrigeration equipment manufacturing concentrated in the United States?
Texas and Tennessee host major HVAC manufacturing operations serving residential and commercial construction markets. Southeast states support additional production capacity near growing construction activity. Midwest manufacturers concentrate on commercial refrigeration equipment near food processing customers. According to BLS employment data[6], manufacturing employment distributes across states with industrial infrastructure and proximity to major construction and food distribution markets.
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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