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Ventilation Fans and Thermostatic Controls (Attic)
Attic ventilation fans are installed to help keep the attic from getting overheated during the summer and to circulate air in the spring and fall. They also help to prevent moisture from accumulating during the winter months. These fans can be controlled by automatic thermostats that turn the fan on when the attic reaches a certain temperature.
Attic fans and their thermostats help to keep your summer air conditioning bill in check by preventing your home's attic from reaching extremely high temperatures. Without proper ventilation, attics can reach temperatures of up to 150 degrees, even when the outdoor temperature is just 80 to 90 degrees. In addition, winter condensation, without an attic fan, can lead to mold and mildew and even compromise your ceiling joists.