Of clearance from class b flues 2 in.
Blow hot air into attic from closet.
You can see the wall gets cooler the lower you go.
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.
From masonry chimneys to any combustible material including insulation.
A duct or vent booster fan can increase the flow of cool air into that room.
Hot air exhaust vents located at the peak of the roof allow hot air to escape.
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.
Two types of booster.
Adding a server closet return.
That is because the temperature difference is leveling out due to the hot air from the attic moving down into the colder wall.
To solve for exhausting this heat i took a two pronged approach.
A ventilator fan can blow conditioned air up or down depending on the position of the blower unit.
What we need to do is exhaust the warm air from the room not inject air.
Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an attic.
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.
But it gets worse.
Because the pipe gets hot building codes require 1 in.
The condenser in your air conditioner works hard to get rid of heat and pressurize refrigerant for the return trip through your house.
In the winter months you will be injecting hot air into the room compounding the problem.
That is because the hot air from the attic is being drawn down behind the drywall into the wall cavity.
Put it in an attic full of blown insulation and you re.