A solar attic fan is a solar powered fan installed on the exterior roof and on the inside of the attic of a home. Solar attic fans decrease the temperature of the attic area and may therefore decrease the interior temperature of the home as well. Depending on the size of the fan, it is estimated that a solar attic fan may be able to reduce the temperature in the attic by up to 50 degrees Fahrenheit (10 degrees Celsius).
The main advantage of installing a solar attic fan is that it can help to reduce the interior temperature of a home. Attics can achieve temperatures of 160 degrees Fahrenheit (71 degrees Celsius) or more during the day. This trapped heat may seep into the home, causing the interior temperature to rise.
In addition to cooling a home and helping a home to be more energy-efficient, solar attic fans can also reduce the amount of moisture that is allowed to collect in the attic. Attics often attract residual moisture from a home. Over time, this moisture can cause extensive if left unchecked and untreated. An attic ventilation fan helps to draw moisture out and away from the interior of a home, creating a drier, less humid environment in the attic.
Solar attic fans can also help to reduce the wear and tear and increase the service life of a roof. While roofs and the materials used on them are designed to withstand extreme weather conditions, over time the excess heat can cause damage to the roof. The extra ventilation provided by an attic fan can reduce the temperature in the attic area, which in turn may increase the lifetime of a roof.
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