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Attic fan cooling savings.
In general a large capacity fan running at low speed makes less noise than a small fan operating at high speed.
Larger homes that need larger a c units can save even more.
Using a whole house fan can result in a savings of over 300 each month of running a 3500w a c unit during the hottest part of summer.
With an attic fan you can cool the attic to the same temperature as it is outside greatly reducing the house from heating as quickly.
Quietcool attic fans work almost everywhere almost anytime.
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You can set a multi speed fan to a lower speed when noise is a problem.
However if your attic has blocked soffit vents and is not well sealed from the rest of the house attic fans will suck cool conditioned air up out of the house and into the attic.
But attic ventilation requires a balance.
Whole house fans can be noisy especially if improperly installed.
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Attic fans cool the attic which helps cool the rooms just under it.
If the home is not properly insulated a ventilator fan can actually draw cool air out of the home resulting in an increased cooling load.
During the summer an attic can be 40 to 50 hotter than the outside temperature which in turn heats up the house very quickly.
All whole house fans should be installed with rubber or felt gaskets to dampen noise.
With attics reaching up to 160 degrees in the arizona heat that s a.