How Much Roof Venting For 6000 Cfm House Fan

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How much roof venting for 6000 cfm house fan.

You can only bring in as much air as you can discharge out of your attic vents. Cubic feet per minute or cfm is the amount of cubic feet of air per minute the fan moves. The quietcool brand of whole house fans has taken america by storm. Venting plays a huge part in how your quietcool whole house fan system works to its full potential.

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. Good insulation reduces fan effectiveness. The process of thoroughly cooling the home and attic is called. For proper cooling and efficient operation any whole house comfort ventilator requires adequate unobstructed outlets in the attic through soffit vents grilles or louvers.

The downside of attic ventilation fans. Whole house fans come in a variety of sizes determined by the amount of air they circulate or whole house fan cfm. Having an understanding of this makes choosing the correct fan size for your home an easier process. The qc es 6000 advanced whole house fan is a new take on the idea of whole house ventilation.

Airflow is measured in cubic feet per minute cfm. 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. The two main dangers associated with too much ventilation involve roof damage and increased utility bills. That translates to one attic vent 3 feet by 3 feet or two attic vents.

To calculate the amount of attic exhaust area you will need divide the fan s capacity in cfm by 750. 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. 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.

A rule of thumb is you should have one square foot of net free venting area for every 500 cfm of airflow. Understanding whole house fan cfm. Take the total cubic feet per minute of air flow cfm of the fan and divide by 750 2. Dangers of too much ventilation.

A wind turbine catches the wind and spins a fan which pulls hot air outside. However the utility of attic ventilation fans is actually quite a controversial topic. With a power switch or a thermostat installation an attic fan can be turned on to let hot air from the attic out. The higher the cfm the more venting area is required to keep the system working efficiently.

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.