Solar Powered Attic Fans
Solar powered attic fans utilize a solar panel to power a DC motor when the sun is shining. The fans are installed with intake vents to provide robust ventilation without electric operating costs. Ventilation is only provided when there is adequate sunshine to power the fan motor. The highest fan speed will tend to coincide with the greatest heat from the sun which is when the attic has the greatest need to be cooled. By reducing attic temperature, solar powered attic fans reduce summertime cooling loads while at the same time providing ventilation without added utility load.
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