This means that you'll be able to search for NAICS codes directly (if that's your jam). We'll do the math; let's make better data on public procurement together.
Wall Type Fans; Pedestal Type Fans; Household Type and Attic Type Exhaust Fans; Floor Fans; Forced Draft Exhaust and Disposal Kits; Fans; Air Circulators, and Blower Equipment, whether designated as "industrial" or "nonindustrial" by application and/or use.
Combination Heater-Fans (see FSC 4520).
Fans and impellers which are specifically designed for use with specific individual types of equipment are to be classified in the same classes as their next higher assemblies or in the appropriate components or accessories classes (as in group 25 or 29 or class 1680) as prescribed by the indexes and structure of the FSC.
Possible NAICS Codes
333413 – Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing
333415 – Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing
238220 – Plumbing, Heating, and Air-Conditioning Contractors
444130 – Hardware Stores
423710 – Hardware Merchant Wholesalers
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333414 – Heating Equipment (except Warm Air Furnaces) Manufacturing
333999 – All Other Miscellaneous General Purpose Machinery Manufacturing
423730 – Warm Air Heating and Air-Conditioning Equipment and Supplies Merchant Wholesalers
332216 – Saw Blade and Handtool Manufacturing