1.   Common signs of an overly hot attic are asphalt shingles with corners curled up, or bulges in the felt and shingles directly over the seams in the sheathing.

2.   He had been working for his uncle repairing air-conditioning systems and was tired of hot attics.

3.   Installing a whole house fan can help cool a house because it will evacuate the hot attic air and draw in cooler, replacement air from the outside.

4.   The vents and coils are heavily insulated, or should be, to prevent loss of cooling in a hot attic.

5.   This draws the hot attic air up through the vents and it is replaced by cooler air coming in from the vents below.