I can get a roof mounted power attic vent fan that is 1400 1600 cfm.
Does an attic venolation fan help cool a house.
It helps to cool your home temperatures and the attic by approximately 30 degrees.
The warm air escapes through the attic and to the attic vents allowing the circulation of chilly air from the windows.
It provides good attic ventilation in addition to whole house cooling.
Good insulation reduces fan effectiveness.
Whole house fans should provide houses with 3 to 6 air changes per hour varies with climate floor plan etc check with a professional to determine what is appropriate for your home.
Told that the 2 attic power vents are the only attic ventilation i have the house does have vented soffits every other soffit cover is vented.
Noticed one of the attic vents was not working.
Attic fans perform this ventilation by pushing hot air out into the environment while also pulling fresh cool air into the attic.
Whole house fans work on the principle of removing the hot and humid air out of the house.
The downside of attic ventilation fans.
When combined however they form a perfect union.
I don t know why so many people are so defensive about power attic ventilators but here are a few of the things they ve said to me in the comments.
Attic ventilation fans whether hard wired or powered by their own solar panels seem like a low cost and effective way to help keep your house cool.
Install an attic fan.
Three years ago i wrote an article titled don t let your attic suck power attic ventilators are a bad idea nearly a hundred thousand page views and 93 comments later it s still generating lots of heat.
Adding an attic fan can improve the airflow in your attic to keep it cool.
And get the same effect as a whfan like my fathers house.
But asking if i could use a roof mounted attic power vent fan.
The whole house fan is installed inside the attic between the living space and ceiling.
And use a set of the shutters like used with whole house fans.
However the utility of attic ventilation fans is actually quite a controversial topic.
Attic fans and whole house fans together can help with home ventilation but they serve different purposes.
One static vent style is the turbine vent which uses wind to power its enclosed fan all it takes is a light breeze to rotate the blades and suck heat out of the attic view example on the home.
The result is a cooler attic space with plenty of air exchange.
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.
Buy the way my attic area is about 750 800 sf.
Attic fans push out the hot air and pull in the cool air from the vents installed on your roof.
A whole house fan can be run from early evening to early morning effectively cooling the structure of your home using the cool free outside air.