Attic Humidistat Setting

Humidity settings are another issue that can make or break the performance of your heating and cooling systems and your attic ventilation.

Attic humidistat setting.

In summer the thermostat operates the fan when the attic temperature reaches a preset level usually 90 to 95 degrees f. Most attic fans operate with a thermostat that automatically turns the fan on and off based on a temperature the homeowner sets. If the outdoor temperature is near 10 f set the humidistat to 30 percent. However it should also depend on the season the temperature outdoors as well as indoors.

The results are that the attic temperature is close to the outside temperature but the relative humidity is significantly higher in the attic than either the indoor or outdoor readings. 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. Been running a dehumidifier that costs about 100 month in electricity when it s not running the humidity in the attic drifts steadily toward 100 percent over a few weeks and stays there. Power gable mount attic fan egv5smt attic fans options for home ventilation frequently asked ions master flow solar attic fan 750 cfm dual thermostat humidistat control for.

When it comes to adjusting the thermostat of your attic s fan it s best to adjust it to approximately 90 to 95 degrees. Most manufacturers and contractors recommend a temperature setting between 100 and 110 degrees fahrenheit. The normal indoor humidity range in winter should be 15 to. In particularly hot climates set the temperature higher to keep the fan from running for extended periods of time.

In winter the humidistat operates the attic fan when the relative humidity exceeds a preset level usually 40 to 50. If the outdoor temperature is near 10 f set the humidistat to 20 percent. February 13 2017 by zamira leave a comment. Attic fan humidity setting.

June 27 2019 by zamira leave a comment. If the temperature is near 0 f set the humidistat to 25 percent. The ideal way to control the operation of an attic fan is with a thermostat and a humidistat. Controlling the humidity levels of your attic is also important as it can easily make or break the performance of your hvac systems.

Set the humidistat knob on the humidifier to the following winter settings as recommended by the ask the builder website.