How Much Roof Venting For 6000 Cfm House Fan

The higher the cfm the more venting area is required to keep the system working efficiently.

How much roof venting for 6000 cfm house fan.

The downside of attic ventilation fans. To calculate the amount of attic exhaust area you will need divide the fan s capacity in cfm by 750. The quietcool brand of whole house fans has taken america by storm. A wind turbine catches the wind and spins a fan which pulls hot air outside.

Here is an example. With a power switch or a thermostat installation an attic fan can be turned on to let hot air from the attic out. Having an understanding of this makes choosing the correct fan size for your home an easier process. That translates to one attic vent 3 feet by 3 feet or two attic vents.

Good insulation reduces fan effectiveness. 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. Whole house fans come in a variety of sizes determined by the amount of air they circulate or whole house fan cfm. Determine how much net free venting your fan will require.

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. Airflow is measured in cubic feet per minute cfm. The qc es 6000 advanced whole house fan is a new take on the idea of whole house ventilation. The two main dangers associated with too much ventilation involve roof damage and increased utility bills.

For proper cooling and efficient operation any whole house comfort ventilator requires adequate unobstructed outlets in the attic through soffit vents grilles or louvers. This will give you the amount of net free venting in square feet required for the fan you select. Venting plays a huge part in how your quietcool whole house fan system works to its full potential. The process of thoroughly cooling the home and attic is called.

Roofing resources during covid 19 for contractors for homeowners. You can only bring in as much air as you can discharge out of your attic vents. 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.

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. Dangers of too much ventilation. We always recommend at least having 1 sqft of net free area venting for every 750 cfm in your system. So at 3000 cfm you ll want six square feet of venting.

Cubic feet per minute or cfm is the amount of cubic feet of air per minute the fan moves.