How Much Roof Venting For 6000 Cfm House Fan

A wind turbine catches the wind and spins a fan which pulls hot air outside.

How much roof venting for 6000 cfm house fan.

Cubic feet per minute or cfm is the amount of cubic feet of air per minute the fan moves. Airflow is measured in cubic feet per minute cfm. Take the total cubic feet per minute of air flow cfm of the fan and divide by 750 2. Roofing resources during covid 19 for contractors for homeowners.

Here is an example. Attic ventilation fans whether hard wired or powered by their own solar panels seem like a low cost and effective way to help keep your house cool. Understanding whole house fan cfm. Dangers of too much ventilation.

Good insulation reduces fan effectiveness. For proper cooling and efficient operation any whole house comfort ventilator requires adequate unobstructed outlets in the attic through soffit vents grilles or louvers. We always recommend at least having 1 sqft of net free area venting for every 750 cfm in your system. Venting plays a huge part in how your quietcool whole house fan system works to its full potential.

Determine how much net free venting your fan will require. This will give you the amount of net free venting in square feet required for the fan you select. The qc es 6000 advanced whole house fan is a new take on the idea of whole house ventilation. The downside of attic ventilation fans.

So at 3000 cfm you ll want six square feet of venting. That translates to one attic vent 3 feet by 3 feet or two attic vents. The higher the cfm the more venting area is required to keep the system working efficiently. The process of thoroughly cooling the home and attic is called.

If you need 6 000 cfm of air flow through your house divide 6 000 by 750 to get a minimum 8 square feet of attic venting. A rule of thumb is you should have one square foot of net free venting area for every 500 cfm of airflow. However the utility of attic ventilation fans is actually quite a controversial topic. You can only bring in as much air as you can discharge out of your attic vents.

Having an understanding of this makes choosing the correct fan size for your home an easier process. With a power switch or a thermostat installation an attic fan can be turned on to let hot air from the attic out. The quietcool brand of whole house fans has taken america by storm. 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.

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