Configuring Home Automation Attic Ventilation Based On Outside Temperature

Attic temperature depends on the amount of solar radiation construction details and the rate of ventilation.

Configuring home automation attic ventilation based on outside temperature.

Calculations indicate that on a july day in texas a ventilation rate of one air change per minute for a typical attic using 95 degree f air will lower the peak attic temperature to about 101 degrees f. The fire started on an outside wall went up the wall and into the attic space spread across the entire house in the attic with no smoke coming into the house until the ceiling was about to collapse which was far too late. To determine the temperature of your attic use a total of 3 thermometers. One static vent style is the turbine vent which uses wind to power its enclosed fan all it takes is a light breeze to rotate the blades and suck heat out of the attic view example on the home.

I have an attic vent fan that i d like to try automating to turn on when the attic is hotter than the outside temperature and maybe if the temperature is over 90. Right now its 8 c outside and i ve got a thermometer in the attic showing 2 c or about 35 f. But i would like to actively monitor this situation without having to go into the attic and walk all the way over to the other end of it. This summer i put in a rotating vent and vented soffit on the entire house.

Depending on the climate and outside temperature it could reach up to 150 degrees fahrenheit in the attic. The second should be close to the attic. Providing half air change per minute will lower the temperature to about 106 degrees f. I was hoping to pull approximate outside temperature from the internet my ecobee thermometer also seems to pull that data in from somewhere.

Most of the available published research on attic ventilation has focused on site built homes or. Luckily my wife and i were upstairs and hear the rafters crackling looked outside and saw the wall of fire and got our. My current setup is home assistant on docker with aeotec z stick. The cooling load for a home air conditioner depends on the difference in temperature between the inside and outside air and reduction of attic temperatures from 155 degrees to 105 degrees f will result in a significant reduction in cooling load.

I fixed the bathroom and now i m getting paranoid that its going to leak again. Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures. One should be in the middle of the attic suspended from the roof ridge this will be the hottest part of your attic. The best i could think of is temperature and humidity sensors.

I now know this is due to ice damming. No scientific claims have ever been made for venting attics in hot humid climates. So my house burned down a couple of years ago.