333414 — Heating Equipment (except Warm Air Furnaces) Manufacturing
Description
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.
Exclusions & Cross-References
- 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 251
- 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
Overview Facts
| NAICS Code | 333414 |
|---|---|
| Industry Title | Heating Equipment (except Warm Air Furnaces) Manufacturing |
| SBA Size Standard | 500 employees |
| IRS PBA Code | 333410 (rolled-up match) |
| Sectors Hierarchy | Sector 31-33 → 333 → 3334 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 2499 - Wood Products, NEC (via SIC1987:2499→NAICS1997:333414→2002:333414→2007:333414→2012:333414→2017:333414→2022:333414)
- SIC 3433 - Heating Equipment, Except Electric and Warm Air Furnaces (via SIC1987:3433→NAICS1997:333414→2002:333414→2007:333414→2012:333414→2017:333414→2022:333414)
- SIC 3443 - Fabricated Plate Work (via SIC1987:3443→NAICS1997:333414→2002:333414→2007:333414→2012:333414→2017:333414→2022:333414)
- SIC 3444 - Sheet Metal Work (via SIC1987:3444→NAICS1997:333414→2002:333414→2007:333414→2012:333414→2017:333414→2022:333414)
- SIC 3569 - General Industrial Machinery and Equipment, NEC (via SIC1987:3569→NAICS1997:333414→2002:333414→2007:333414→2012:333414→2017:333414→2022:333414)
- SIC 3634 - Electric Housewares and Fans (via SIC1987:3634→NAICS1997:333414→2002:333414→2007:333414→2012:333414→2017:333414→2022:333414)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 333414:
- Sector 31-33 Directory Hub — List of related industries in the Manufacturing sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.
Related Industries in 3334
Frequently Asked Questions (FAQ)
Is 333414 a valid 2022 NAICS code?
NAICS 333414 is 'Heating Equipment (except Warm Air Furnaces) Manufacturing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 500 employees.
What is the SBA size standard for NAICS 333414?
The SBA small business size standard for NAICS 333414 is 500 employees (based on employees).
What is the legacy SIC code mapping for 333414?
NAICS code 333414 maps to the legacy 1987 SIC codes: 2499 - Wood Products, NEC, 3433 - Heating Equipment, Except Electric and Warm Air Furnaces, 3443 - Fabricated Plate Work, 3444 - Sheet Metal Work, 3569 - General Industrial Machinery and Equipment, NEC, 3634 - Electric Housewares and Fans.