Proper sizing of a QuietCool attic fan is crucial for its effectiveness. Airflow is measured in CFM (Cubic Feet Per Minute), and the fan's CFM should be matched to the attic's peak height. The formula is straightforward: for every 2 feet of peak attic height, 0.5 CFM per square foot is needed, ensuring a minimum of 15 complete air exchanges per hour.

This formula works for any attic size, and more airflow is generally better. The sizing formula provides 15 complete air exchanges per hour, similar to the formula used for their whole house fans.

It's essential to note that the sizing is based on attic square footage, not the home's square footage. For assistance, a full-featured attic fan sizing calculator is available on their website. Users only need to provide the attic square footage, peak attic height, and some information about their home to get an accurate recommendation for the required CFM.

If properly sized, the QuietCool fan will lead to satisfied customers every time. For questions or further assistance, customers can contact the company directly.

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