The QuietCool brand of whole house fans has taken America by storm. The QC CL-2250 advanced whole house fan is a new take on the idea of whole house ventilation. Whole house ventilation allows you to bring the cooler outdoor air through your windows， home and attic space to thoroughly cool and ventilate both the home and attic. The process of thoroughly cooling the home and attic is called thermal mass cooling. This is what allows your home to stay cooler the next day and resist heating up as much as it would if you only ran the AC to cool the home. QuietCool uses a unique， patented design that uses an acoustical duct attached to an R5 damper box. The result is almost zero noise vibration and whisper quiet operation. With the QuietCool QC CL-2250 installed in your master bedroom， gone are the days of tossing and turning all night long due to the heat. Simply open a window， flip on the QuietCool and enjoy a peaceful and cool night of sleep. Better yet， QuietCool is proudly designed with a 98% customer satisfaction.
QuietCool advanced whole house fans use and improve upon the principle of ventilation cooling with savings of up to 50-90% off traditional cooling methods such as A/C
3.29 sq. ft. of net free attic venting required for proper ventilation
Cools and ventilates rooms up to 1235 sq. ft. for optimum performance
Fan motor head hangs from the rafters in the attic with a small ceiling cut-out for the air intake grille (14 in. x 18 in. ceiling cut-out)
Moves air at a rate of 2465 CFM on high and 1910 CFM on low
250-Watt PSC motor on high and 201-Watts on low ensures efficient operation and airflow
QuietCool 8-hour countdown timer and 2-speed control switch sold separately
Installation is simple with a typical 1 to 2-hour install time with no framing or joist-cutting required (fits 16 or 24 on-center)
R5 damper box at the ceiling level helps insulate the home from the attic during the cold times of the year when the fan is off
HVI-916 airflow rate for California: 1770 CFM
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