Instructions / Assembly

QUIETCOOLSYSTEMS.COM 7
2.2 SYSTEM VENTING REQUIREMENTS
VERY IMPORTANT: 1 SQUARE FOOT OF NET FREE VENT AREA PER 750 CFM
RECOMMENDED: 2 TO 4 SQUARE FEET OF INLET VENTS PER FAN
Venting plays a very signicant role in the performace of QuietCool fans. QuietCool recommends a
minimum of 1 SQ. FT. of venting for every 750 CFM in the QuietCool system. If an attic has at least 1:750
attic venting, the QuietCool system will operate efciently and effectively. If an attic has less than 1:750
attic venting, the system may not operate as efciently, or effectively, as it could with 1:750 attic venting.
But don’t worry, the system will still operate if there is not enough venting.
Insufcient venting is a very simple problem to x. Roong contractors can add extra venting to most
homes simply and easily. The most common types of venting is shown in the chart below.
Vent Type Model Type Average Size Venting Sq. Ft.
Gable vent 12” x 19.5” 1.20
Dormer Vent 14” x 8” 0.70
Eave Vent
4”
5”
6”
0.03
0.04
0.07
Ridge Vent 4’ - 12’ 0.125 per ft
Soft Vent
16” x 4”
16” x 6”
16” x 8”
0.19
0.29
0.39
O’Hagin Vent
Low/Medium Prole
Tapered Low Prole
Low Prole Flat
High Prole
0.5
0.6
0.68
0.68
Turbine Vent
8”
12”
14”
.35
.79
1.1
*Note: This table is only a guideline and is not a guarantee of venting capacity.
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