In the winter this vapor is attracted to the cooler air in the attic, where it quickly condenses. Condensation can drip onto attic insulation, reducing its effectiveness. This moisture can cause wood rot to the attic structure and promote the growth of mold and mildew, affecting the quality of the air in the home. So, for added protection, install a power vent equipped with a humidistat.
Power vents are rated in CFM—cubic feet of air moved per minute. The higher the CFM, the more powerful the vent and the more air exchanges per hour it provides. To determine the minimum CFM required, multiply the attic square footage by 0.
For example:. Just like any exhaust vent power vents need intake airflow to perform properly. To calculate how much intake the power vent needs simply divide the fan's CFM capacity by and then convert that number to square inches. Learn about warranty coverage, transferability, limitations, other conditions and customer responsibilities.
For Warranty information and questions, please contact us at: warranty gibraltar1. Limited Warranty The Air Vent Product that you have purchased has a limited warranty from the date of purchase against defects in workmanship and materials. The length of the warranty varies by product. Please see attached chart for details. This open ring configuration allows the fan motor to move air more efficiently and with fewer restrictions. A shutter Model SHT15W, sold separately opens automatically when the fan turns on to allow the unit to exhaust efficiently.
A gable-mounted power fan is installed in the gable end of the attic. Some homes already have gable end vents or louvers there, making it easy to install a powered fan at that location. Power vents are rated in CFM—cubic feet of air moved per minute.
The higher the CFM, the more powerful the vent and the more air exchanges per hour it provides. To determine the minimum CFM required, multiply the attic square footage by 0. For example:. Just like any exhaust vent power vents need intake airflow to perform properly.
To calculate how much intake the power vent needs simply divide the fan's CFM capacity by and then convert that number to square inches. Learn about warranty coverage, transferability, limitations, other conditions and customer responsibilities.
Follow us on LinkedIn. View our YouTube Channel. Powered Automatic Manual. Articles Air Vent Newsletter. Our team came together in an extraordinary way over the last several months and created a new level of community, culture and family.
Across our diverse set of companies, our team of over 2, employees stepped up to help each other, our families, and our communities. Gibraltar companies supplied more than 3. This is what sets us apart. This is what makes us stronger. This is what makes us all GibraltarProud. Roofing contractors offer tips to improve the attic airflow to assist the air conditioning system — and mistakes to avoid. Roofing contractors share how they solved challenging roofs and attics that needed proper ventilation.
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