QuietCool Classic Whole House Fan QC CL-7000

QuietCool attic fans for whisper-quiet grow room ventilation

The QuietCool Energy Saver Classic QC ES-5400 uses a patented, self-contained duct system that suspends the motor in the attic, dramatically reducing noise and vibration inside the room. With 5,422 CFM on high (2,719 CFM on low), this ventilation fan can cool and exchange air in grow rooms, lung rooms, or whole homes up to 2,700 sq ft while drawing as little as 82 watts on low. The 2-speed 120 VAC motor, barometric R5 dampers, and minimum 7.6 sq ft attic venting requirement make it a powerful yet efficient exhaust fan solution for heat and humidity control in hydroponic spaces.

Energy-saving greenhouse fans for larger hydroponic spaces

Designed to fit standard 16" or 24" on-center framing with no joist cutting, the QC ES-5400 installs cleanly in ceilings using the included damper box, 9-foot duct, and removable 16" x 32" grille. Sound levels as low as 41 dB on low speed keep your hydroponic or greenhouse operation quiet enough for bedrooms, living spaces, or attached lung rooms. Pair it with an 8-hour electronic timer, double 3-way switch, or Wi-Fi smart control (sold separately) for automated grow room ventilation that slashes reliance on traditional air conditioning while backed by a 10-year warranty.

Key features:

• Ultra-quiet operation for stealth grows – Patented attic-mounted duct system keeps noise and vibration in the grow room as low as 41 dB on low, ideal for residential or discreet setups.

• High-CFM air exchange for large spaces – Up to 5,422 CFM on high to cool and ventilate big grow rooms, lung rooms, garages, or greenhouse zones up to 2,700 sq ft.

• Energy-efficient alternative to AC – Uses just 82 W on low and 728 W on high, helping reduce cooling costs compared to running air conditioning around the clock.

• Easy installation with no joist cutting – Fits standard 16" or 24" on-center framing, with included cut-out template, grille, duct, and hardware to simplify mounting above your grow area.

• Better environmental control & protection – Barometric R5 dampers help seal the system when off, improving insulation and reducing backdrafts, while fast air exchange helps manage heat and humidity around lights and reservoirs.

• Flexible, automated control options – Compatible with timers, double 3-way switches, and Wi-Fi smart controls (not included) so you can schedule day/night cycles and integrate with your hydroponic climate control strategy.

Specifications: