The opening around a furnace or water heater flue is a major source of warm air into the attic photo 5.
Blow hot air into attic from closet.
But it gets worse.
In the winter months you will be injecting hot air into the room compounding the problem.
However with that understanding that creating negative pressure in the attic can cause all kinds of problems sucking out air from the conditioned space possible back drafting of combustion appliances etc he has come up with the idea to blow air into the attic instead i e creating positive pressure to force the hot air out.
Hot air exhaust vents located at the peak of the roof allow hot air to escape.
It draws cooler outside air in through open doors and windows to create a pleasant breeze that pushes hot air out through attic vents.
What we need to do is exhaust the warm air from the room not inject air.
Kadin2048 i writes i don t think that condensation in the attic is really a problem in my area the attic is so hot it s almost certainly warmer near the peak than the exhaust air from the ac but in some areas or if you were using the ac to cool a particularly hot room like a server closet on a cool day it very well might be a problem.
To solve for exhausting this heat i took a two pronged approach.
You can see the wall gets cooler the lower you go.
From masonry chimneys to any combustible material including insulation.
That is because the temperature difference is leveling out due to the hot air from the attic moving down into the colder wall.
A ventilator fan can blow conditioned air up or down depending on the position of the blower unit.
Two types of booster.
Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an attic.
Low cfm similar to a bathroom vent 300cfm and only in the hot spots basically by adding an inline ducting fan to the return ducts for the hotspot rooms.
Because the pipe gets hot building codes require 1 in.
My idea is to vent the build up of hot air that has risen to the ceiling in the hotspot rooms into the attic so that air from cooler parts of the house can move in.
A duct or vent booster fan can increase the flow of cool air into that room.
Adding a server closet return.
Put it in an attic full of blown insulation and you re.