Highlights

The Stealth Pro line consists of several models ranging from the 1,500 CFM all the way up to 7,000 CFM!

Various speed options allow homeowners to control how much airflow they want in their home.

The Stealth Pro series has an Electronically Commutated AC/DC Brushless motor which offer sultra-high efficiency with very high CFM/Watt ratios.

A switch and timer unit ensures easy control.

Innovative and Patented Design.

Stealth Pro series boasts an industry leading 15-year motor warranty.

R5 Insulated Damper System

The included damper system features barometric pressurized gravity dampers that ensure 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 Trident 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.

RF Switch Controls

QuietCool’s RF Control Kit allows you to turn on your QuietCool Whole House Fan from the comfort of anywhere in your home. This remote can be used up to 100 feet away from your whole house fan while you can pair up to 20 different remotes to just one fan.

Stealth Pro Models
  • STL PRO-1.5X

    Tech Specs

    • Name
      STL PRO-1.5X
    • Airflow*
      1479 CFM
    • HVI-916 Airflow (CA Title 24)**
      1040 CFM
    • dBA
      Hi: 37.2
    • Energy Efficiency
      66.7 Watts
    • Grille
      16 x 16
    • Attic Venting
      1.98 Sq.ft net free area
    • Coverage
      Small Rooms
  • STL PRO-2.5X

    Tech Specs

    • Name
      STL PRO-2.5X
    • Airflow*
      Hi: 2541 CFM / Low: 2018 CFM
    • HVI-916 Airflow (CA Title 24)**
      Hi: 1920 CFM / Low: 1510 CFM
    • dBA
      Hi: 43.2 / Low: 37.2
    • Energy Efficiency
      Hi: 157 Watts / Low: 82.3 Watts
    • Grille
      16 in. x 20 in.
    • Attic Venting
      3.39 Sq.ft net free area
    • Coverage
      Master Bedrooms and Large Rooms (up to 1,000 sq ft.)
  • STL PRO-3.3X

    Tech Specs

    • Name
      STL PRO-3.3X
    • Airflow*
      Hi: 3159 CFM / Low: 1980 CFM
    • HVI-916 Airflow (CA Title 24)**
      Hi: 2350 CFM / Low: 1470 CFM
    • dBA
      Hi: 47.4 / Low: 36.1
    • Energy Efficiency
      Hi: 264 Watts / Low: 74.6 Watts
    • Grille
      16 in. x 24 in.
    • Attic Venting
      4.22 Sq.ft net free area
    • Covers Up To***
      1053 SQFT to 1580 SQFT / Small Homes
  • STL PRO-4.8X

    Tech Specs

    • Name
      STL PRO-4.8X
    • Airflow*
      Hi:4280 CFM / Med:3500 CFM
      Low:2361 CFM
    • HVI-916 Airflow (CA Title 24)**
      Hi: 3130 CFM / Med: 2560 CFM / Low: 1670 CFM
    • dBA
      Hi: 47.4 / Med: 43.2 / Low: 33.0
    • Energy Efficiency
      Hi: 408 Watts / Med: 225 Watts
      Low: 73.9 Watts
    • Grille
      16 in. x 32 in.
    • Attic Venting
      5.71 Sq.ft net free area
    • Covers Up To***
      1427 SQFT to 2140 SQFT / Medium Homes
  • STL PRO-5.5X

    Tech Specs

    • Name
      STL PRO-5.5X
    • Airflow*
      Hi:5044 CFM / Med:4238 CFM
      Low:2870 CFM
    • HVI-916 Airflow (CA Title 24)**
      Hi: 3750 CFM / Med: 3070 CFM / Low: 2010 CFM
    • dBA
      Hi: 50.7 / Med: 45.7 / Low: 35.6
    • Energy Efficiency
      Hi: 490 Watts / Med: 268 Watts
      Low: 88 Watts
    • Grille
      16 in. x 32 in.
    • Attic Venting
      6.73 Sq.ft net free area
    • Covers Up To***
      1681 SQFT to 2522 SQFT / Medium/Large Homes
  • STL PRO-6.0X

    Tech Specs

    • Name
      STL PRO-6.0X
    • Airflow*
      Hi:5587 CFM / Med:4262 CFM
      Low:3428 CFM
    • HVI-916 Airflow (CA Title 24)**
      Hi: 4030 CFM / Med: 3070 CFM / Low: 2440 CFM
    • dBA
      Hi: 51.1 / Med: 45.7 / Low: 38.5
    • Energy Efficiency
      Hi: 462 Watts / Med: 210 Watts
      Low: 113 Watts
    • Grille
      16 in. x 38 in.
    • Attic Venting
      7.45 Sq.ft net free area
    • Covers Up To***
      1862 SQFT to 2794 SQFT / Large Home
  • STL PRO-7.0X

    Tech Specs

    • Name
      STL PRO-7.0X
    • Airflow*
      Hi:6996 CFM / Med:5448 CFM
      Low:4308 CFM
    • HVI-916 Airflow (CA Title 24)**
      Hi: 5200 CFM / Med: 3990 CFM / Low: 3180 CFM
    • dBA
      Hi: 54.3 / Med: 47.4 / Low: 41.4
    • Energy Efficiency
      Hi: 725 Watts / Med: 319 Watts
      Low: 166 Watts
    • Grille
      16 in. x 38 in.
    • Attic Venting
      9.33 Sq.ft net free area
    • Covers Up To***
      2332 SQFT to 3498 SQFT / Large/Extra Large Homes
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