Attic Humidistat Setting Winter

June 27 2019 by zamira leave a comment.

Attic humidistat setting winter. Attic fan temperature setting. Proper humidistat setting attic fan. Only about 10 of the hip roof is shaded so it gets plenty of direct sunlight. In summer the thermostat operates the fan when the attic temperature reaches a preset level usually 90 to 95 degrees f.

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. Winter air is by nature not humid so the problem must be condensation related. Cold outdoor temperatures especially below freezing can wear on your furnace. Eliminating mold and mildew on the roof structure is the ultimate goal.

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. Controlling the humiditylevels of your attic is also important as it can easily make or break the performance of your hvac systems. When it comes to humidity you would be best to have the levels below 50 to avoid mold growth and structural rot.

Ideal attic temperature and humidity settings cold outdoor temperatures affect attics. If the temperature is near 0 f set the humidistat to 25 percent. Most manufacturers and contractors recommend a temperature setting between 100 and 110 degrees fahrenheit. Hot summer weather poses the opposite problem for maintaining recommended attic temperatures.

Most attic fans operate with a thermostat that automatically turns the fan on and off based on a temperature the homeowner sets. In winter the humidistat operates the attic fan when the relative humidity exceeds a preset level usually 40 to 50. Quelch the heat wave. Set the humidistat knob on the humidifier to the following winter settings as recommended by the ask the builder website.

Dual thermostat humidistat control for attic fan installation how to install master flow 1500 cfm black power roof jet fan journals attic attic fans green air solutions. With outside temperatures ranging between 5 f and 95 f attic temperatures range between 48 f and 92 f. If the outdoor temperature is near 10 f set the humidistat to 20 percent.