The ideal way to control the operation of an attic fan is with a thermostat and a humidistat.
Attic fan thermostat setting winter.
In particularly hot climates set the temperature higher to keep the fan from running for extended periods of time.
Attic fan thermostat setting.
However it should also depend on the season the temperature outdoors as well as indoors.
Normally the humidistat setting should range between 15 to 50 percent.
Likewise adjustable thermostats will shut the fan off.
In winter the humidistat operates the attic fan when the relative humidity exceeds a preset level usually 40 to 50.
When it comes to adjusting the thermostat of your attic s fan it s best to adjust it to approximately 90 to 95 degrees.
The normal indoor humidity range in winter should be 15 to.
How is an attic fan controlled.
Most manufacturers recommend setting your attic fan thermostat between 105 115 degrees and monitoring how often and how long the fan runs to adjust the setting for your home.
Many people buy an attic fan which cost around 50 for standard electric gable fans to upwards of 350 for a high end solar attic fan and one of the first things they have to determine is the proper temperature to set the attic fan thermostat.
Controlling the humidity levels of your attic is also important as it can easily make or break the performance of your hvac systems.
In summer the thermostat operates the fan when the attic temperature reaches a preset level usually 90 to 95 degrees f.
Of course some environments are much hotter than others so this will be the perfect time to measure out how warm your attic will get during the most heated of seasons.
Eliminating mold and mildew on the roof structure is the ultimate goal.
Most manufacturers and contractors recommend a temperature setting between 100 and 110 degrees fahrenheit.
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Humidity settings are another issue that can make or break the performance of your heating and cooling systems and your attic ventilation.
When the temperature within the attic reaches a set point the fan will turn on and start venting the heated air cooling the attic space.