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QC STL PRO 4.8 Stealth Pro Series Whole House Fan Direct Electric Company


The new Stealth Pro Series line of QuietCool fans is an installer-exclusive product. Manufactured with the Energy Saving ECM Motor, they provide substantial energy cost savings. The Stealth series fans are powerful, providing coverage of 1,488-6,035 cubic feet per minute, 750-3,000 square feet and can be installed in various areas of the home. Check out the different Stealth Pro models below to find the best one for you!

QuietCool QC STL PRO 4.8

The QC STL PRO 4.8 is a new, 3 speed, energy saving model of QuietCool whole house fans.  The Stealth Pro Series 4.8 best serves homes around 1,920 square feet. If you want a single fan installed in a central hallway then this is the fan for you. We recommend a multi-fan configuration with the STL PRO 4.8 in the central hallway and one of our lower CFM fans (STL 1.5 or 2.5) in the bedrooms for maximum air flow and flexibility.  (Covers 2,250 sq ft)

General Specifications
Warranty 15 Years
Efficiency Hi: 556 Watts / 8.49 CFM/Watt | Med: 198 Watts /16.40 CFM/Watt

Low: 73 Watts / 30.14 CFM/Watt

Airflow Hi: 4,718 CFM | Med: 3,247 CFM | Low: 2,200 CFM
Sound Level Hi: 51 dB | Med: 43 dB | Low: 41 dB
Attic Requirements 6.3 SQ FT net free area, Fits between 16″ or 24″ on center joists, No framing required
Motor Specifications
Speeds 3
Voltage 120 V. AC, 60Hz
Housing Diameter 18.5″
Housing Length 13.5″
Duct Specifications
Duct Diameter 18″
Duct Length 9′
Damper & Grill
Dampers Barometric Pressurized R-5 Dampers
R-Value R5 (R45 w/ optional winterized insert)
Rough Ceiling Opening 14.25″ x 30.25″
Outside Grill Dimensions 16″ x 32″
Shipping Info
Weight 64 lbs.
Dimensions 40″ x 22″ x 36″
Shipping Cube 16.45
UL Listings
Motor E62815; E62788; E62862
Power Cord ETL 3171583
Handy Box E195978
Acoustic Duct UL 181


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Additional information

Weight 56 kg
Dimensions 102 × 56 × 92 cm

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