333414

Heating Equipment (except Warm Air Furnaces) Manufacturing

Manufacturing › Machinery Manufacturing › Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing

SBA Size Standard

500 employees

Employee-Based Verify at SBA.gov →

NAICS Code Hierarchy

33

Sector

Manufacturing

333

Subsector

Machinery Manufacturing

3334

Industry Group

Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing

333414

National Industry (This Code)

Heating Equipment (except Warm Air Furnaces) Manufacturing

Official NAICS Description

Source: U.S. Census Bureau 2022 NAICS

📘 Source: U.S. Census Bureau — 2022 NAICS Manual
This U.S. industry comprises establishments primarily engaged in manufacturing heating equipment (except electric and warm air furnaces), such as heating boilers, heating stoves, floor and wall furnaces, and wall and baseboard heating units.

✓ Small Business Eligibility at a Glance

Based on SBA Table of Small Business Size Standards (2024)

Size Standard

500 employees

Measurement Period

Current count

Standard Type

Employee-Based

Applies To

All contracts under NAICS 333414

Set-Aside Programs

8(a), WOSB, HUBZone, SDVOSB

Certification Required

No (self-certify in SAM.gov)

Size standards are set by the SBA and reviewed periodically. Always verify at SBA.gov before bidding.

Cross-References

The following activities are classified elsewhere in the NAICS system:

Manufacturing warm air furnaces--are classified in U.S. Industry 333415, Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing;
Manufacturing electric space heaters--are classified in Industry 335210, Small Electrical Appliance Manufacturing;
Manufacturing household-type cooking stoves and ranges--are classified in Industry 335220, Major Household Appliance Manufacturing;
Manufacturing industrial, power, and marine boilers--are classified in Industry 332410, Power Boiler and Heat Exchanger Manufacturing;
Manufacturing industrial process furnaces and ovens--are classified in U.S. Industry 333994, Industrial Process Furnace and Oven Manufacturing; and
Manufacturing commercial-type cooking equipment--are classified in Industry 333310, Commercial and Service Industry Machinery Manufacturing.

How to Use NAICS 333414 in SAM.gov

NAICS code 333414Heating Equipment (except Warm Air Furnaces) Manufacturing — is used in SAM.gov to identify businesses whose primary activity falls within this classification. When you add this code to your SAM.gov entity registration, contracting officers searching for vendors in the Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing space will be able to find your business.

If this code represents your primary business activity, designate it as your primary NAICS code. Your primary NAICS code determines your size standard for any contract solicited under this code. With a size standard of 500 employees, your business must be at or below this threshold to qualify as a small business for set-aside contracts under NAICS 333414.

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Frequently Asked Questions

What is NAICS code 333414?

NAICS code 333414 is 'Heating Equipment (except Warm Air Furnaces) Manufacturing', classified under the Manufacturing sector (NAICS 33). This U.S. industry comprises establishments primarily engaged in manufacturing heating equipment (except electric and warm air furnaces), such as heating boilers, heating stoves, floor and wall furnac

What is the SBA small business size standard for NAICS code 333414?

The SBA defines a small business under NAICS code 333414 (Heating Equipment (except Warm Air Furnaces) Manufacturing) as one with 500 employees. This size standard determines eligibility for small business set-aside contracts, 8(a), HUBZone, WOSB, and SDVOSB programs in SAM.gov.

How do I register NAICS code 333414 in SAM.gov?

To register NAICS code 333414 in SAM.gov: (1) Log in at sam.gov, (2) Navigate to your Entity Registration, (3) Go to the Assertions section, (4) Add 333414 (Heating Equipment (except Warm Air Furnaces) Manufacturing) to your NAICS code list. You may designate one code as your Primary NAICS code.

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Related NAICS Codes

Other codes in Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing

Related PSC Codes

PSC codes commonly used with this NAICS sector

Source: GSA PSC Manual April 2025

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