The QUIETCOOL QC-4500 (U.S. Patent #7497774) will help you slash your A/C related electricity costs by 50-90%* and pays for itself faster than any other "green energy" product on the market today. The "Quiet Giant" QC 4500 is our #1 selling whole house fan. Compared side by side to the old-fashioned attic fans of yesteryear, homeowners daily contact QuietCool dealers to "take that noisy attic fan
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