Humidity Setting For Attic Fans

I am in chicago where temperature is around 30 today and humidity about 53.

Humidity setting for attic fans.

An attic fan works by exchanging the hot air in your attic space for fresh air pulled through the vents. 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. This will help to avoid premature damage to the shingles or mold building up in moist hot. If the thermostat is set a little bit high the natural convection cooling of the attic ventilation system will bring the temperature down the rest of the way in a reasonably short period of time after the fan shuts off.

In particularly hot climates set the temperature higher to keep the fan from running for extended periods of time. Since your attic can effortlessly soar above 95 degrees on average it s best to make sure that this space doesn t reach ten degrees above the day s forecast as many industry professionals can agree on. With installation of this new fan the temperature in my house is colder than it was last year by about 2 degrees. When the air in your attic becomes super heated it can drastically increase the workload on your air conditioner.

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. The normal indoor humidity range in winter should be 15. I have a new attic fan w thermostat set at 110 and humidistat set at 60. Humidity settings are another issue that can make or break the performance of your heating and cooling systems and your attic ventilation.

I believe it is due to the new attic fan which seems to run all the time. Before the advent of air conditioning attic fans or whole house fans were the primary means used to cool residential housing. Proper humidistat setting attic fan june 27 2019 by zamira leave a comment 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. Attic temperatures can reach upwards of 150 degrees in the summertime and an attic fan can help evacuate the hot air and humidity that can build up.

February 13 2017 by zamira leave a comment. Attic fan humidity setting.