SICCODE.comSIC LookupD Manufacturing34 Fabricated Metal Products, except Machinery and Transportation Equipment343 Heating Equipment, except Electric and Warm Air; and Plumbing FixturesSIC 3433
SIC Code 3433 – Heating Equipment, except Electric and Warm Air Furnaces
Official 4-digit SIC code Source: OSHA SIC Manual Updated Nov 13, 2026
At a glance
Companies
More specific segments
Which businesses belong in SIC 3433?
Usually classified in SIC 3433
- Boilers, low-pressure heating: steam or hot water
- Fireplace inserts
- Furnaces, domestic: steam or hot water
- Gas burners, domestic
- Gas heaters, room
Usually classified elsewhere
- Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment 3585 · Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment
- Household Cooking Equipment 3631 · Household Cooking Equipment
Official definition for SIC 3433 - Heating Equipment, except Electric and Warm Air Furnaces
Establishments primarily engaged in manufacturing heating equipment, except electric and warm air furnaces, including gas, oil, and stoker coal fired equipment for the automatic utilization of gaseous, liquid, and solid fuels.
Source: OSHA SIC Manual
Companies in SIC 3433 - Heating Equipment, except Electric and Warm Air Furnaces
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Preview · details masked| Company | Contact & title | Website | Phone | Employees |
|---|---|---|---|---|
| Fulton Thermal Corp Pulaski, NY | ||||
| Charah Solutions Inc Louisville, KY | ||||
| Ground Heaters Inc Butler, WI |
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Fulton Thermal Corp · Pulaski, NY
Contact Website Phone Employees -
Charah Solutions Inc · Louisville, KY
Contact Website Phone Employees
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Key facts for SIC 3433 - Heating Equipment, except Electric and Warm Air Furnaces
- SIC code
- 3433
- Official title
- Heating Equipment, except Electric and Warm Air Furnaces
- Scope
- OSHA SIC Manual, establishment-level
- Division
- D Manufacturing (20–39)
- Official source
- OSHA SIC Manual
- Where SIC is used
- Used on EPA permit forms and in OSHA inspection data, as well as SEC filings and business lists. See which agencies still use SIC codes →
SIC Classification Hierarchy
Four official SIC levels, plus a more detailed commercial classification level.
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Industry · Official 4-Digit 3433 Heating Equipment, except Electric and Warm Air Furnaces
One example classification path is shown. Other branches may exist. The 6-digit Marketing Level is a commercial extension, not an official SIC classification.
Other codes in Industry Group 343: 3431 · Enameled Iron and Metal Sanitary Ware 3432 · Plumbing Fixture Fittings and Trim
More specific segments in SIC 3433
Segments let you target only the companies you need. Add one or more to your list to get pricing and a free sample.
670 U.S. companies across 9 segments · Segment codes are 6-digit marketing categories that extend the official 4-digit SIC code. They are not official SIC codes.
SIC 3433 is in your list, which already includes all 9 segments.
| Code | Segment | Companies | Build your list |
|---|---|---|---|
| 3433-01 | Boilers-New & Used | 49 49 companies | |
| 3433-02 | Geothermal Htg/Cooling Equipment Systs | 8 8 companies | |
| 3433-03 | Heating Equipment | 266 266 companies | |
| 3433-04 | Oil Burners | 12 12 companies | |
| 3433-05 | Solar Energy Equipment | 295 295 companies | |
| 3433-07 | Heaters-Unit | 20 20 companies | |
| 3433-08 | Stoves-Wood Coal Etc | 9 9 companies | |
| 3433-09 | Burners-Industrial | 8 8 companies | |
| 3433-10 | Gas Burners | 3 3 companies |
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Example companies in SIC 3433
See how SICCODE.com evaluates businesses using documented activities and official SIC definitions. Select a company to review its classification and the reasoning behind it.
645 verified U.S. companies
- Watlow Electric Manufacturing Co Columbia, MO View classification →
- C B Nebraska Boiler Co Lincoln, NE View classification →
- Mestek Inc Farmville, NC View classification →
- Coen Co Inc Tulsa, OK View classification →
- Central Boiler Greenbush, MN View classification →
- Precision Speed Equipment Inc Sturgis, MI View classification →
- Thermal Engineering International Joplin, MO View classification →
- Boyertown Foundry Co Boyertown, PA View classification →
NAICS, ISIC and NACE Rev. 2.1 crosswalk for SIC 3433 - Heating Equipment, except Electric and Warm Air Furnaces
Correspondences in NAICS, ISIC and NACE Rev. 2.1 (via ISIC) for SIC 3433 - Heating Equipment, except Electric and Warm Air Furnaces. These mappings do not replace the official SIC definition.
| System | Code | Title |
|---|---|---|
| SIC This page | 3433 | Heating Equipment, except Electric and Warm Air Furnaces |
| NAICS | 333414 | Heating Equipment (except Warm Air Furnaces) Manufacturing Heating Equipment (except Warm Air Furnaces) Manufacturing |
| ISIC Rev. 4 | 2512 | Manufacture Of Tanks, Reservoirs And Containers Of Metal Manufacture Of Tanks, Reservoirs And Containers Of Metal |
| ISIC Rev. 4 | 2815 | Manufacture Of Ovens, Furnaces And Furnace Burners Manufacture Of Ovens, Furnaces And Furnace Burners |
| NACE Rev. 2.1 (via ISIC 2512) | 25.21 | Manufacture of central heating radiators, steam generators and boilers Manufacture of central heating radiators, steam generators and boilers |
| NACE Rev. 2.1 (via ISIC 2512) | 25.22 | Manufacture of other tanks, reservoirs and containers of metal Manufacture of other tanks, reservoirs and containers of metal |
| NACE Rev. 2.1 (via ISIC 2815) | 28.21 | Manufacture of ovens, furnaces and permanent household heating equipment Manufacture of ovens, furnaces and permanent household heating equipment |
Source: Eurostat, NACE Rev. 2.1 to ISIC Rev. 5 correspondence; United Nations Statistics Division, ISIC Rev. 4 to ISIC Rev. 5 correspondence table.
Sources for SIC 3433
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Official classification source U.S. Occupational Safety and Health Administration.
Standard Industrial Classification Manual (1987), SIC 3433. OSHA SIC Manual → -
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About this classification
This page combines the official SIC definition with classification analysis, crosswalks, and SICCODE.com commercial data. Classifications are reviewed regularly by the Industry Classification Review Team.