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Standard Industrial Classifications Codes (SIC Codes) /
North American Industry Classification System (NAICS)

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33341Ventilation, Heating, Air-Conditioning and Commercial Refrigeration Equipment Manufacturing
This industry comprises establishments primarily engaged in manufacturing ventilation, heating, air-conditioning and commercial refrigeration equipment.

Exclusion(s): Establishments primarily engaged in:

*manufacturing industrial, power and marine boilers (33241, Power Boiler and Heat Exchanger Manufacturing); *manufacturing commercial cooking and food warming equipment (33331, Commercial and Service Industry Machinery Manufacturing); *manufacturing industrial process furnaces and ovens (33399, All Other General-Purpose Machinery Manufacturing); *manufacturing household fans (except attic), and portable electric space heaters, humidifiers and dehumidifiers (33521, Small Electrical Appliance Manufacturing); *manufacturing household cooking stoves, ranges, refrigerators and freezers (33522, Major Appliance Manufacturing); and *manufacturing motor vehicle air-conditioning systems and compressors (33639, Other Motor Vehicle Parts Manufacturing).

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