Attic Fan Temperature And Humidity Settings

The reason is that attic fans depressurize attics and can rob air conditioned air from the main body of the house greatly decreasing efficiency.

Attic fan temperature and humidity settings. Humidity settings are another issue that can make or break the performance of your heating and cooling systems and your attic ventilation. Most attic fans operate with a thermostat that automatically turns the fan on and off based on a temperature the homeowner sets. Most manufacturers and contractors recommend a temperature setting between 100 and 110 degrees fahrenheit. The normal indoor humidity range in winter should be 15.

The fans cool the attic equalizing the temperature between the attic and outside of the home. Our answer attic ventilators generally turn on between 90 and 110 degrees fahrenheit. In particularly hot climates set the temperature higher to keep the fan from running for extended periods of time. This prevents snow from melting on your roof and freezing when it hits the cold gutter.

That said attic fans are not the best choice for cooling attics especially if you have central air conditioning.