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High Volume Low Speed Fans

High volume, low speed fans reduce utility costs, increase comfort

HVLS warehouse fan

Justifying an HVLS fan upgrade

  • High volume fans help relieve the highs and lows of temperature ranges in large, open buildings by destratifying temperature zones
  • Energy efficient and quiet
  • Long 18-24' blades move large volumes of air with very little draft
  • Slow speed reduces total energy cost for heating/cooling large areas

category blue arrowMacroAir Fans

MacroAir FansHighly engineered slow speed high volume fans from MacroAir distribute air quietly through a facility, destratifying varying air layers for even temperatures throughout without noticeable air currents to chill workers. Saves heating and cooling costs.

category blue arrowNordock Whalenado

Nordock WhalenadoRevolutionary blade design and energy efficiency mark the Whalenado fan from Nordock as a strong competitor in the HVLS market. With 8' - 24' diameter sizes, these fans move up to 397,000 cfm pulling only 3 amps for the largest fan.

category blue arrowPatterson Fans

Patterson FansWith air volumes of up to over 380,000 cfm and coverage for a single fan of up to 20,000 sq. ft., Patterson fans are industrial work horses that mix air layers and provide a more comfortable environment for workers.


High volume, low speed fans reduce utility costs, increase comfort

Industrial ceiling fans provide superior ventilation capabilities. They continuously mix incoming fresh air with stale air, thus minimizing the total amount of ventilation required to achieve adequate air quality. No other fan, system, or ventilation technology does this better.

  • When used as a stand-alone cooling system, they can reduce the temperature to yield an effective cooling of up to 8° F less within the fan's coverage area (up to 20,000 square feet per 24' fan)
  • When used in conjunction with an air conditioning system, its slow and steady air flow can reduce or eliminate the need for costly and efficiency-reducing A/C duct work
  • Effective for shipping docks, and other areas with opening doors and bays
  • During heating seasons, HVLS technology de-stratifies uneven temperatures that occur at each level throughout the facility - forcing unused heated air from the ceiling down to floor where it can have a positive impact on employees. This heat differential can be in excess of 15° F from ceiling to floor, enabling significant cost savings when thermostat levels are reduced
  • One HVLS fan consumes about the same electricity as one high-speed alley fan but moves 12 times the amount the air
  • It costs about a nickel an hour to operate
  • Better ventilation reduces spoilage due to pent-up moisture pockets or humidity
  • Quiet and non-disruptive operation
HVLS warehouse fan

Benefits with or without air conditioning

When it's hot in facilities without A/C, slowly moving air breaks up the moisture-saturated boundary layer surrounding the body, accelerating evaporation to produce a cooling effect. When used in conjunction with air conditioning or evaporation cooling systems, HVLS Fans can efficiently circulate cooled air throughout the structure.

During the cold months the basic problem is air temperature stratification. Simply put, this means since heated air rises, it gets caught in the ceiling and can typically yield a significant temperature differential from that found on the floor.

air stratification with HVLS warehouse ceiling fans

De-stratify heat levels to effectively heat or cool large spaces

HVLS fan technology circulates this trapped heat, continually forcing it to circulate down and throughout the structure. This provides a more even distribution of heat from top to bottom - especially important when employees are working at different levels within a generally open structure. Furthermore, because of advanced technology, there's never a chilling breeze - air movement is imperceptible.