Because there is less natural humidity in the air during the cold winter months the humidistat settings must be altered.
Attic humidistat setting winter.
With outside temperatures ranging between 5 f and 95 f attic temperatures range between 48 f and 92 f.
In winter the humidistat operates the attic fan when the relative humidity exceeds a preset level usually 40 to 50.
A humidistat is a device on humidifiers that regulates the amount of relative humidity inside a home or building.
Humidity settings are another issue that can make or break the performance of your heating and cooling systems and your attic ventilation.
The ideal way to control the operation of an attic fan is with a thermostat and a humidistat.
When it comes to humidity you would be best to have the levels below 50 to avoid mold growth and structural rot.
Installing an attic fan with a humidistat can be effective in controlling the heat and humidity particularly during the hot summer days.
In summer the thermostat operates the fan when the attic temperature reaches a preset level usually 90 to 95 degrees f.
June 27 2019 by zamira leave a comment.
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Only about 10 of the hip roof is shaded so it gets plenty of direct sunlight.
Proper humidistat setting attic fan.
Advani hopes to finish the attic and install a minisplit although he s not sure that will lower the humidity.
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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.
In areas with high humidity homeowners should install a humidistat which will start the fan when a certain humidity level is reached to reduce the amount of moisture in the attic limiting mold and rot.
The normal indoor humidity range in winter should be 15.
However maintaining ideal attic temperatures and humidity settings can be a challenging task for most of us.
Winter air is by nature not humid so the problem must be condensation related.