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Power Vents
Roof Ventilation
With balanced motor and blade design, power vents quickly exhaust heat or humidity from any attic. They work on a thermostat, which automatically turns the fan on when cooling is needed. Some models also have an extra feature called a humidistat that monitors the moisture level of the air.
Attic Aire™ Roof – Mounted Power Attic Vent
The Attic Aire All Season™ model fights heat and humidity with a combination automatic thermostat/humidistat.
Attic Aire™ Solar Powered Roof-Mounted Attic Vent
An environmentally friendly, energy saving alternative to traditional power attic ventilators.
Attic Aire™ Solar Powered Gable-Mounted Attic Vent
Solar panel collects and delivers power even in reduced light.
Attic Aire™ Gable-Mounted Power Attic Vent
“Plus” model features an automatic thermostat/ humidistat that protects attics from excess heat and humidity year-round.
Benefits:
One power attic ventilator is usually sufficient, unless it’s a very large attic, Roof-mount power vents are ideal for hip roofs, Feature a preset adjustable thermostat for maximum homeowner convenience, Gable-mounted power vents are an excellent option for tile roof ventilation.
Design Considerations:
- Most power attic ventilators only have a thermostat, so they only monitor the heat in the attic. Moisture buildup is also a problem in the attic. A solution is a power attic ventilator featuring a combination thermostat/humidistat.
- For proper attic ventilation, the Home Ventilation Institute recommends a system that provides at least 10 air exchanges an hour. To determine the fan capacity needed to provide this minimum airflow, use the following formula: attic square feet x 0.7 = CFM (cubic feet of air moved per minute).
- Power vents are rated by CFM. Look for a power vent that provides at least the minimum CFM requirement. Remember, the higher the CFM the more air exchanges per hour.
- Note: for roofs 7/12 or higher, you may want to add 20% more CFM capacity to handle the larger volume of attic space; 30% more for roofs 11/12 and higher
- Keep in mind that there are energy costs associated with operating a power attic ventilator
- Adequate soffit venting must be installed for best performance
- If using gable vents, gable vents must be installed on the down-wind end of the home
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