Whole House Ventilation Calculator

If you are looking to determine the CFM requirement for a whole house fan, fresh air circulation, here is a link to our CFM calculator(see below). You will need the approximate square footage and the number of bedrooms in your home in order to determine the CFM requirement. This can be used to guide the CFM rating of the unit you are looking to purchase/replace. 

ASHRAE 62.2 Whole House Ventilation Calculator