What are the advantages of solar attic fans?

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 will 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. An attic fan sits on the top of the roof, over an opening in the attic of the home. As the fan turns, it pulls the hot air from the attic and draws it outside. By venting the hot air in the attic outside, a solar attic fan can make the inside of a home cooler and more comfortable.

Another advantage of a solar attic fan is that by reducing the temperature of a home, it can help air conditioning and home cooling systems to work more efficiently, providing a potential saving in utility costs. Air conditioning systems are a major source of power usage in the average home. The higher the interior temperature, the harder the air conditioning system needs to work to cool the inside of a home. By reducing the gap between the current interior temperature and the desired temperature, an attic ventilation fan helps to reduce the amount of work that a cooling systems needs to perform to make the interior climate of a home more comfortable.

Solar attic fans not only help a homeowner save money on cooling costs, but can also help the owner save on the operating costs of the fan. Attic ventilation fans may either be electrically powered or solar powered. Fans that are electrically powered must, by its very nature, use electricity to operate. Solar-powered fans do not use electricity to operate but derive power from the sun through the use of roof mounted solar panels. Since they use no electricity, solar attic fans are therefore more affordable to operate than electric attic fans.

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.

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