HVLS Fans "Destratification"

Warming up with destratification

During the heating season, there can be up to a 30-degree difference between the floor and ceiling at most manufacturing plants and warehouses as a result of warm air (light) rising and cold air (heavy) settling. Typically, the air temperature will be one-half to one degree warmer for every foot in height. Heating systems must work hard for extended periods of time to maintain the temperature near the floor, or at the thermostat set point, wasting precious energy and dollars

HVLS fans mitigate the rising heat effect by gently moving the warm air near the ceiling back down toward the floor where it is needed; a process called destratification. The air reaches the floor below the fan where it then moves horizontally a few feet above the floor. The air eventually rises to the ceiling where it is cycled downward again. This mixing effect creates a much more uniform air temperature, with perhaps a single degree difference from floor to ceiling. Facilities equipped with HVLS fans lower the burden on the heating system, reduce energy consumption and save money.

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