Of clearance above the fan.
Open attic door to cool house.
It works together with the attic insulation which will ensure hot air does not enter the attic from outside.
Therefore i conclude that i get a slightly cooler garage and i assume inside the house leaving the attic door uncovered.
In that case what they really need is a whole house fan not a powered attic ventilator.
And they d still want to have the ceiling air sealed and fully insulated to minimize heat transfer from the attic to the house.
I don t claim this is scientific but i found the door closed temperature differential was 6 5 degrees.
As you can imagine leaving any open areas will allow warm air to seep into your attic during the summer.
These fans are commonly mounted in an upstairs stairwell or hallway ceiling where there s at least 3 ft.
A powerful fan draws cooler early morning and evening air through open doors and windows and forces it up through the attic and out the roof vents.
When it comes to the best way to cool attic with or without an air conditioner you need to ensure that any cracks gaps or holes are taken care of.
This home cooling method is referred to as stack or convective ventilation.
To head off these problems consider these options for bringing your attic s temperature down.
If you suspect your ventilation isn t doing its best to keep your attic cool talk to an expert to find out if you need an update.
With door open 5 2 degrees.
Install electric ventilators and attic fans which remove hot air from an attic.
This sends hot air up and out cooling your house and your attic.
Open a basement window in the farthest opposite or north corner of your home to cool the entire house.
Alternatively install passive vents such as gable soffit and ridge vents which.
Sometimes people say they want to install a pav to cool the house because they don t have ac.