Whirly Bird Attic Fan
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Whirly bird attic fan. 30 watt solar attic fan black with thermostat humidistat 22 x 22 x 11 in brushless motor hail and weather resistant solar vent fan solar powered attic fan for homes by remington solar 4 5 out of 5 stars 99. See more product details. Whirly bird fan works with 60 watt of solar panel and wind. Air movement in the attic helps prevent moisture buildup on rafters and on the bottom of roofing materials.
Full length ridge vent in combination with soffit vents is best. 21 feet of free wire included. They make noise too. With this said neither the turbine nor the ridge vent will act upon moisture.
The whirly bird or turbine vents are worse than useless. In summer air movement helps rid the attic space of. When considering ventilation for your attic it is very important to take into account moisture as well as heat as mold growing inside your attic is much worse than mold growing on the roof shingle surface on the outside. Roof vents vs whirly birds.
It is a con to make people think the spinning action is like running a fan and mechanically drawing hot air out.