Lacking these i did the following.
Leave attic door open in summer.
Its best if you can arrange a ventilation fan to the attic space or open the window vents if you have in attic.
During this brutally hot summer of 2012 i ve left the garage access door open and it dropped the temperature in the attic substantially.
As a general rule hot air rises.
Although air should circulate year round through the attic your house will probably be more comfortable if you cover the foundation vents in the winter.
But did you know that the tar shingles on your roof actually heat your home.
I had new power vents installed they are more powerful move more air than previous ones.
For having the air conditioner running almost continuously this summer i thought my utility bills were not that expensive.
For central air leave the doors open to help the system keep the temperature balanced throughout the home.
As you know cold air settles and hot air rises.
They heat up and by conduction they heat everything they touch and the warming.
Is it best to leave the garage door open.
They need to be open in the summer.
Opening your automatic garage door will let cool air and a draft in.
For a window or portable unit keep the door of the room it s in closed.
Told that the 2 attic power vents are the only attic ventilation i have the house does have vented soffits every other soffit cover is vented.
In the garage is an access door to the attic.
Set the garage door so.
During the hot months many people leave their garage doors open in the day or there is even a screen door type covering for a garage.
Have you ever lived inside a closed shade closed like a room.
What is the philosophy about reducing heat in garages during summer months.
Opening your attic access panel will draw that air into the attic and help to push the hot air up there and out through the roof vents assuming you have proper attic ventilation.