Step by Step tutorial about the kitchen exhaust fans typically used on dishwasher hoods, they are also used above any residential or commercial kitchen for ventilation, Learn how to properly install, frame, and wire your kitchen exhaust fan.
A whole-house fan is a type of fan, or exhaust system commonly venting into a building's attic, designed to pull hot air out of the building. It is sometimes confused with a powered attic ventilator, which exhausts hot air from the attic to the outside through an opening in the roof or gable.
A whole-house fan pulls air out of a building and forces it into the attic space. This causes a positive pressure differential in the attic forcing air out through the gable and/or soffit vents, while at the same time producing a negative pressure differential inside the living areas which draws air in through open windows.
Powered attic ventilators, by comparison, only serve to remove some hot air from the attic.