Commercial and industrial fan or blower

means a rotary-bladed machine used to convert electrical or mechanical power to air power, with an energy output limited to 25 kilojoule per kilogram (kJ/kg) of air. A commercial and industrial fan or blower has a rated fan shaft power greater than or equal to 1 horsepower, or, for fans without a rated shaft input power, an electrical input power greater than or equal to 0.89 kilowatt (kW); and a fan output power, static air power or total air power, less than or equal to 150 horsepower as prescribed in paragraph(a)(4)(ii) of 10 C.F.R. section 431.174. They consist of an impeller, a shaft, bearings, and a structure or housing. It may include a transmission, driver, and/or controller at the time of sale.

(1) Commercial and industrial fans and blowers do not include:

A) a radial housed unshrouded fan with blade diameter at tip less than 30 inches or a blade width of less than 3 inches;

(B) a safety fan;

(C) an induced flow fan;

(D) a jet fan;

(E) a cross-flow fan;

(F) a fan manufactured exclusively to be powered by internal combustion engines;

(G) a fan that creates a vacuum of 30 inches water gauge or greater;

(H) a fan that is designed and marketed to operate at or above 482°F (250°C);

(I) a fan and blower embedded in the equipment listed in paragraph (a)(3) of 10 C.F.R. section 431.174; and

(J) a fan and blower embedded in equipment other than the equipment listed in paragraph (a)(3) of 10 C.F.R. section 431.174, that meets the following criteria:

(i) the fan or blower is available only as part of a manufactured assembly that includes functions other than air movement or as a replacement part for that assembly, and

(ii) the fan or blower is not subject to federal efficiency standards.