UL 507

Standard for Electric Fans

1.1 These requirements cover:

a)    Fans and blowers that circulate air, such as desk, ceiling-suspended, and hassock fans;

b)    Fans and blowers that ventilate air, such as attic, whole-house window, through wall, and direct discharge fans;

c)    Ducted fans and blowers that exhaust air to the outside of a building structure, such as in-line, wall insert and ceiling insert fans;

d)    Dryer type fans used for drying carpets or floors;

e)    Commercial display blowers;

f)    Evaporative coolers;

g)    Evaporative cooler replacement pumps;

h)    Air-filtering appliances;

i)    Component fans;

j)    Low voltage component fans;

k)    Residential cooking area fans, such as rangehoods and downdrafts;

l)    Hand dryers without heater; and

m)    Recirculating and blending units except as noted in 1.8(h).

These products are rated 600 volts or less and are intended to be employed in accordance with the National Electrical Code, ANSI/NFPA 70.

1.2 Deleted effective May 12, 2007

1.3 Deleted effective May 12, 2007

1.4 Deleted effective May 12, 2007

1.5 Deleted effective May 12, 2007

1.6 Deleted effective May 12, 2007

1.7 Deleted effective May 12, 2007

1.8 These requirements do not cover:

a)    Air heaters incorporating fans, heating-ventilating units, or blowers comprising components of such equipment as furnaces, mechanical-refrigeration equipment, or air conditioners;

b)    Fusible links, and the like, provided to disconnect a fan or close shutters in the event of fire;

c)    Fans for use in cooking areas when the fan is intended for other than household use;

d)    Fans intended to be used in hazardous locations as defined in the National Electrical Code, ANSI/NFPA 70;

e)    Fans intended to be installed over solvents or chemically flammable liquids or vapors;

f)    Fans located in chemically corrosive environments;

g)    Humidifiers;

h)    Fans intended to move heated or conditioned air;

i)    Heated hand dryers;

j)    Ionizers, products with ionization features, or electrostatic air cleaners;

k)    Household or commercial blowers or inflators intended for use with inflatable bouncing toys or similar children's products.

l)    Microwaves, ventilating or otherwise;

m)    Ducted or non-ducted heat recovery ventilators;

n)    Deodorizers and air fresheners.


  • Edition Number: 9
  • Edition Date: 12/13/1999
  • Price Code: C
  • Type: ulstd
  • ANSI Approved: 03/09/2016
  • DOD Approved: 02/05/1993