You also want a fan that s appropriate for the square footage of your attic space by checking the manufacturer s specifications.
Attic fan breaker size.
Before running out to buy an attic fan take some time to check the existing attic ventilation on your house.
How to size a whole house attic fan.
First is the thermostat calling for the fan when the breaker is turned on.
Of roof vent area for every 300 sq.
How to wire a attic fan.
For a single story house this is usually the same as the square footage of the house itself plus any attached garage area.
The inexpensive fans can help reduce heating and cooling costs by evacuating superheated or cold.
To determine the size of your attic multiply the width by the length of the attic floor in feet.
Meaning if nothing is telling the fan to run and the breaker trips we re looking at and for a direct short in the supply line power to the unit.
While the type and number of vents will vary depending on the specific roof design house location and amount of direct sun a minimum venting system should have 1 sq.
A whole house attic fan is installed in the ceiling between the top floor and the attic as a supplement to air conditioning.
Example 20 wide by 50 long attic.
A whole house fan sucks warm house.
Test the wires to ensure the power is off.
An attic fan is an electric exhaust fan that mounts in your home s attic.
I assume we are talking about an a c airhandler and not a whole house fan or attic vent fan.