Whole house fans work on the principle of removing the hot and humid air out of the house.
Fans to push hot air out of attic.
This sends hot air up and out cooling your house and your attic.
Attic fans push hot air out of the space.
They are sized by roof area or single floor.
They have thermostats that turn the fan on at a recommended preset temperature of 100 110 degrees.
Attic exhaust fans remove hot air from attic spaces while whole house fans remove hot air from both living spaces and the attic at the same time.
And if the fan is running during a rainstorm you ll also be adding water to the mix resulting in a muddy mess.
The warm air escapes through the attic and to the attic vents allowing the circulation of chilly air from the windows.
Set them both to draw air out.
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.
Alternatively install passive vents such as gable soffit and ridge vents which are openings in the roof that allow hot air to escape.
These fans are commonly mounted in an upstairs stairwell or hallway ceiling where there s at least 3 ft.
As the air in the room cools it becomes heavier and sinks to the bottom.
These attic fans are installed in the gable wall or roof of the structure.
The whole house fan is installed inside the attic between the living space and ceiling.
Install electric ventilators and attic fans which remove hot air from an attic.
The air source will come from the eaves of the roof.
A powerful fan draws cooler early morning and evening air through open doors and windows and forces it up through the attic and out the roof vents.
This displaces the warmer air at the bottom.
Attic ventilation fans are a type of attic fan that cools attics by pushing hot air outside while pulling in cooler air from soffit and gable vents.
This causes cool air to rush into that space.
To ensure that the attic fan is working properly you need to make sure that your attic is sealed up tight where it touches the ceiling of the top floor.
They differ from whole house fans which are attic installed fans intended to cool the entire home rather than simply maintain proper attic temperature.
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.
As it is warmer it is less dense thus it rises upwards.
Whole house fans and attic fans are often confused.
Attic fans push out the hot air and pull in the cool air from the vents installed on your roof.
If you set one to push air in you ll be pushing all kinds of dust dirt and insects into the attic space.
Adding an attic fan can improve the airflow in your attic to keep it cool.
Of clearance above the fan.
Install an attic fan.
This prevents hot air from seeping into your home and driving up the temperature in the living space which reduces the load on your air conditioner.
