They ve been well discussed here and other places but briefly they re not cost effective don t deal with the problem where it starts are using convection to solve a radiant heat problem and can even be dangerous by backdrafting combustion appliances and.
Cool attic efficiency.
Running at 250 watt and moving over 2860 cfm this fan uses less power than typical attic fans that move half the amount of cfm.
Some other attic options may provide better cooling results but overall attic ventilation turbines are a great option for attic energy efficiency.
Cool attic cx242ddwt drive 2 speed at amazon the precision balanced blades and bracing provide quiet and efficient ventilation best gable mount.
However if your attic has blocked soffit vents and is not well sealed from the rest of the house attic fans will suck cool conditioned air up out of the house and into the attic.
An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate.
And it can cause your air conditioner to work harder than it needs to and send your energy bills soaring with the temperature.
When installing a foil type barrier the u s.
Attic turbines can help ventilate an attic in the summer and possibly cool your attic and prevent ice dams in the winter which can prolong the life of your attic.
Attic fans are intended to cool hot attics by drawing in cooler outside air from attic vents soffit and gable and pushing hot air to the outside.
An unventilated attic can reach 150 degrees in the heat of summer 50 degrees higher than it should be.
Adding a radiant barrier prevents the sun from beating down onto your attic and heating it up which means this option can help keep your attic cool in the summer.
The quietcool afg pro 3 0 attic gable fan can help cool and ventilate your attic for just pennies an hour.
The afg pro 3 0 is possibly the most powerful residential attic fan on the market today.