
Alorair 540CFM Crawl Space Ventilation Fan Ventirpro 540
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The Alorair VentirPro 540 is a 540 CFM ventilation fan built to move damp air out of crawl spaces, basements, garages and attics. It pairs a 115V AC motor with a dehumidistat adjustable from 5% to 80% RH and a thermostat that switches on at 50°F and off at 35°F, so it can run on its own instead of being switched by hand. At 6.2 lbs and 2.8 inches deep it mounts flat against a vent or wall, which is easier to place than bulky axial fans. It is louder than a quiet bathroom fan at 55 dBA, so it suits utility spaces rather than living areas.
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The Alorair VentirPro 540 is a crawl space ventilation fan that moves 540 CFM of air. It is made to expel excess humidity from enclosed spaces, which helps prevent wood rot, mold growth and airborne spores. It is sized for spaces of 3,600 to 5,600 cubic feet.
It is meant for crawl spaces, and it can also be used in other tight or enclosed areas of the home, such as a basement, garage or attic. By controlling humidity, it improves indoor air quality and reduces some allergy symptoms.
The fan has a built-in dehumidistat with a 5% to 80% RH range. Its thermostat turns the fan on at 50°F and off at 35°F.
