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Free Shipping Over $25!

DETAILS

Shipping Type	Order By
Standard Ground Small Parcel FREE - On orders over $25 View Transit Map	7:00 PM CST
Next Day Air (Calculated at checkout)	3:00 PM CST
Standard Ground Freight FREE - On orders over $25	1:00 PM CST

Calculate Air Exchange (CFM)

Enter information into the fields below to calculate the required airflow per fan.

To calculate the CFM required to adequately ventilate an area, we divide the room volume by the appropriate “Minutes per Change” value.

[CFM] = [Room Volume] / [Min./Chg.]

Area:

Minutes per change:

Range varies based on your selection

Your local building codes should contain information pertaining to the suggested air changes for proper ventilation. The ranges specified will adequately ventilate the corresponding areas in most cases. However, extreme conditions may require "Minutes per Change" outside of the specified range.

To determine the actual number needed within a range, consider the geographic location and average duty level of the area. For hot climates and heavier than normal area usage, select a lower number in the range to change the air more quickly. For moderate climates with lighter usage, select a higher number in the range.

Result

Airflow (CFM) per Fan

Starred items represent required fields.

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Calculate Air Exchange (CFM)

Enter information into the fields below to calculate the required airflow per fan.

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