What other ceiling fan requirements are there?

In addition to DOE Efficiency legislation, HVLS fans must be in accordance to Fire code – nfpa 13. This code includes:

  • Maximum fan diameter shall be 24 ft.
  • Fan shall be centered between 4 sprinklers
  • Vertical clearance to sprinkler deflector shall be minimum of 3 ft.
  • Fans shall be interlocked to shut down upon receiving fire alarms

HVLS fans must also me in accordance of ASHRAE 55 – Comfort Cooling. ASHRAE 55 establishes methodology for quantifying the effect of air velocity on thermal comfort


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