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QuietCool QC STL PRO-5.5 - Stealth Pro Whole House Fan, 3 Speed, 4487 CFM, 120 VAC, 60 Hz

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QuietCool Stealth Pro Line

The Stealth Pro line of QuietCool Advanced Whole House Fans was first introduced in 2014 and is an evolution of our Energy Saver Classic line. With energy consumption as low as 55 watts and a 15-year warranty, the QuietCool Stealth Pro Line offers ultra-high efficiency and peace of mind operation.

  • Innovative and Patented Design - The QuietCool Stealth Pro Line features our patented, self-contained duct system that hangs in the attic to help neutralize the sound and noise vibration heard in the home. The result is zero noise vibration allowing the system to be used in the home without disturbing anyone who may be sleeping.
  • R5 Insulated Damper System - The included damper system features barometric pressurized gravity dampers that insure there will be no heat/cooling loss between the home and attic. Compare this to traditional whole house fans that have old-style shutters with zero R-Value.
  • Removable Egg crate Grille - Each QuietCool Stealth Pro whole house fan model includes a removable egg-crate grille. Not only is this grille extremely stylish, but since it is removable, it is very easy to clean. Better yet, with our simple removable design, it is easy to add our R40 Winterized Kit option to seal your QuietCool with R45 value during the cold months of the year.
  • Electronically Commutated AC/DC Brushless Motor - All QuietCool Stealth Pro Line fans include our ultra-high efficiency electronically commutated AC/DC brushless motors. Known as "ECM" motors, these motors offer ultra-high efficiency with very high CFM/Watt ratios. All Stealth Pro fans operate on low wattage and low amperage. These motors are so efficient that they can help homeowners slash their A/C related electricity costs by up to 50-90%.
  • Included Wall Switch Controls - All Stealth Pro models include the needed wall-switch controls standard. This includes an Electronic 8-Hour Countdown Timer and a speed control switch (when applicable).
  • Industry Leading Warranty - QuietCool offers an industry leading 15-year warranty on our Professional Series of QuietCool fans. With QuietCool, you will have the confidence that your fan will be operating at its fullest potential for a decade, or more likely, even longer! And if by some chance it breaks during that decade, you will know that you are completely covered on any parts that make up your QuietCool fan motor assembly.
  • 98% Customer Satisfaction - QuietCool enjoys 98% total customer satisfaction. Enjoy peace of mind from thousands of satisfied QuietCool customers.


NameQuietCool QC STL PRO-5.5 - Stealth Pro Whole House Fan, 3 Speed, 4487 CFM, 120 VAC, 60 Hz
Gemaire Item NumberQC STEALTHPRO5.5
Manufacturer Product NumberQC STL PRO-5.5
SKU - PIM Number1874215769585650
ERP Number377120
Unit of MeasureEA
Weight75.0 Pounds (Lb)
Length39.0 Inches (In)
Width24.0 Inches (In)
Height39.0 Inches (In)
Country of OriginUSA
Voltage120 VAC
Full Load Amps4.08
Cycle/Hertz60 Hz
Propeller Diameter20"
Grille ColorWhite
Housing Dimensions39" x 24" x 39"
Housing MaterialSteel
Motor EnclosureYES
Motor HP1/2 HP
Motor InsulationYES
Motor TypeECM
Wheel MaterialSteel
ApplicationWholehouse fan
Bearing TypeBall
Duct Diameter20''
Duct Size20"
Frame MaterialSteel
Requires6.78 SQFT of netfree venting
Green Certification or Other RecognitionCalifornia Energy Commision
GEM - Case Quantity


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