- Easy to install, this optional accessory disables the motor below 50(degree) for climates where cold-weather condensation isn't a concern and to extend motor life. The thermostat activates the motor at temperatures above 61(degree) to vent air from dawn through dusk.
- Effective attic ventilation requires air to exit at or near the peak of the roof and replacement air to be drawn in under the eaves of the house, via soffit venting. The Home Ventilating Institute (HVI) recommends that powered attic ventilators provide at least 10 air changes per hour to equalize attic temperature.
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