How Much Roof Venting For 6000cfm House Fan

The two main dangers associated with too much ventilation involve roof damage and increased utility bills.

How much roof venting for 6000cfm house fan. Roofing resources during covid 19 for contractors for homeowners. Let owens corning roofing help you calculate exactly how much ventilation you will need for a healthy and balanced attic with our 4 step ventilation calculator. Hot air exhaust vents located at the peak of the roof allow hot air to escape. Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge.

Venting a homes attic is a very important best building practices will say 50 at the ridge and 50 at the soffits unobstructed. The quietcool brand of whole house fans has the quietcool brand of whole house fans has taken america by storm. Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space. This fan calculator is typically used to calculate the cfm or cubic feet per minute of air exchange that may be desired in a building.

If your whole house fan doesn t have the proper ventilation it s not. For proper cooling and efficient operation any whole house comfort ventilator requires adequate unobstructed outlets in the attic through soffit vents grilles or louvers. Whole house ventilation allows you to bring the cooler outdoor air through your windows home and attic space to thoroughly cool and ventilate both the home and attic. As a certified licensed home inspector it is not correct to say too much ventilation is bad for an attic unless rain moisture is getting in.

As the air flows into your home and through your attic your roof vents allow the hot attic air to escape from your home. Too much ventilation and you may find the fan doesn t work efficiently at removing the hot air from the entire attic. Taking advantage of this natural process referred to as passive ventilation is the most common way to vent an. With a power switch or a thermostat installation an attic fan can be turned on to let hot air from the attic out.

To calculate the amount of attic exhaust area you will need divide the fan s capacity in cfm by 750. Do not use mechanical means electric attic fans. A wind turbine catches the wind and spins a fan which pulls hot air outside. Dangers of too much ventilation.

A whole house fan brings outdoor air into your home which is measured in cubic feet per minute. The qc es 3100 advanced whole house fan is a new take on the idea of whole house ventilation. It s all about balance.