[Nick B]

Originally Posted by Annie66

Other than when going into the attic, I would be concerned about leaving the attic access door open. I understand the venting of heat into the attic, but there are 2 issues at play here.

(1) You are taking heat from the garage and moving much of it into the attic where an additional heat load is added to the ceiling making your air conditioner run harder and longer (i.e., many more KWHs consumed plus wear and tear on your AC).

(2) Many house fires begin in the garage and the open attic door will allow it to engulf the entire house once it moves into the attic. There are no walls in the attic.

My 2-cents ----- I would close the attic access completely, and leave the screen garage door open.

Best answer yet.