Stealth Pro Series

The major component that separates the Stealth Pro series from the Trident series is the electronically commutated (ECM) AC/DC brushless motor. These motors are breaking new ground in the world of whole house fans! The motor contains a microchip that allows the motor to cycle from alternating current, to direct current. This is what has homeowners so excited and allows the incredible energy savings! Another great benefit of this “brushless” motor is there are less moving parts, which translates to fewer parts at risk of being damaged. The Stealth Pro series also comes with an industry leading 15-year motor warranty! If reducing your energy footprint by the largest margin is your main focus, or if you are looking to save the most money, then the Stealth Pro is the answer you have been looking for!

 

Innovated and Patented Design

The QuietCool Stealth Pro whole house fan features our patented, self-contained duct system that hangs in the attic to help neutralize any noise vibrations. The result is the ability to use the system at any time without sound disturbance.

R5 Insulated Damper System

The damper system features barometric pressurized gravity dampers that ensure there will be no heating/cooling loss between the home and attic. Compare this to traditional whole house fans that have old-style shutters with zero R-Value and it is not quite close.

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%.

Stealth Pro Models

Technical Data

Stealth Pro 1.5X
Stealth Pro 2.5X
Stealth Pro 3.3X
Stealth Pro 4.8X
Stealth Pro 5.5X
Stealth Pro 6.0X
Stealth Pro 7.0X
Stealth Pro 1.5X

Stealth Pro 1.5X

Model #  STL-PRO-1.5X
Covers Up To*** 439 sqft to 739 sqft
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 sqft net free area

 

DOWNLOAD TECHNICAL SHEET

 

*Listed airflow specs are tested via a device that is calibrated to NIST standards.

 

**HVI-916 airflow specs are to be used by energy consultants and builders for CA Title 24 modeling

 

***Recommended SQFT Coverage @ 2 CFM per SQ FT


Stealth Pro 2.5X

Stealth Pro 2.5X

Model #  STL-PRO-2.5X
Covers Up To*** 847 sqft to 1,271 sqft
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" x 20"
Attic Venting 3.39 sqft net free area

 

DOWNLOAD TECHNICAL SHEET

 

*Listed airflow specs are tested via a device that is calibrated to NIST standards.

 

**HVI-916 airflow specs are to be used by energy consultants and builders for CA Title 24 modeling

 

***Recommended SQFT Coverage @ 2 CFM per SQ FT

 

Stealth Pro 3.3X

Stealth Pro 3.3X

Model # STL-PRO-3.3X
Covers Up To*** 1053 sqft to 1580 sqft
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" x 24"
Attic Venting 4.22 sqft net free area

 

DOWNLOAD TECHNICAL SHEET

 

*Listed airflow specs are tested via a device that is calibrated to NIST standards.

 

**HVI-916 airflow specs are to be used by energy consultants and builders for CA Title 24 modeling

 

***Recommended SQFT Coverage @ 2 CFM per SQ FT

 

Stealth Pro 4.8X

Stealth Pro 4.8X

Model # STL-PRO-4.8X
Covers Up To*** 1427 sqft to 2140 sqft
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: 47.1

Med: 43.2

Low: 33.0

Energy Efficiency

Hi: 408 Watts

Med: 225 Watts

Low: 73.9 Watts

Grille 16" x 32"
Attic Venting 5.71 sqft net free area

 

DOWNLOAD TECHNICAL SHEET

 

*Listed airflow specs are tested via a device that is calibrated to NIST standards.

 

**HVI-916 airflow specs are to be used by energy consultants and builders for CA Title 24 modeling

 

***Recommended SQFT Coverage @ 2 CFM per SQ FT

 

Stealth Pro 5.5X

Stealth Pro 5.5X

Model # STL-PRO-5.5X
Covers Up To*** 1681 sqft to 2522 sqft
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" x 32"
Attic Venting 6.73 sqft net free area

 

DOWNLOAD TECHNICAL SHEET

 

*Listed airflow specs are tested via a device that is calibrated to NIST standards.

 

**HVI-916 airflow specs are to be used by energy consultants and builders for CA Title 24 modeling

 

***Recommended SQFT Coverage @ 2 CFM per SQ FT

 

Stealth Pro 6.0X

Stealth Pro 6.0X

Model # STL-PRO-6.0X
Covers Up To*** 1862 sqft to 2794 sqft
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" x 38"
Attic Venting 7.45 sqft net free area

 

DOWNLOAD TECHNICAL SHEET

 

*Listed airflow specs are tested via a device that is calibrated to NIST standards.

 

**HVI-916 airflow specs are to be used by energy consultants and builders for CA Title 24 modeling

 

***Recommended SQFT Coverage @ 2 CFM per SQ FT

 

Stealth Pro 7.0X

Stealth Pro 7.0X

Model # STL-PRO-7.0X
Covers Up To*** 2332 sqft to 3498 sqft
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" x 38"
Attic Venting 9.33 sqft net free area

 

DOWNLOAD TECHNICAL SHEET

 

*Listed airflow specs are tested via a device that is calibrated to NIST standards.

 

**HVI-916 airflow specs are to be used by energy consultants and builders for CA Title 24 modeling

 

***Recommended SQFT Coverage @ 2 CFM per SQ FT

 

Technical Data

Stealth Pro 1.5X
Stealth Pro 2.5X
Stealth Pro 3.3X
Stealth Pro 4.8X
Stealth Pro 5.5X
Stealth Pro 6.0X
Stealth Pro 7.0X
Stealth Pro 1.5X

Stealth Pro 1.5X

Model # STL-PRO-1.5X
Covers Up To*** 439 sqft to 739 sqft
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 sqft net free area

 

DOWNLOAD TECHNICAL SHEET

 

*Listed airflow specs are tested via a device that is calibrated to NIST standards.

 

**HVI-916 airflow specs are to be used by energy consultants and builders for CA Title 24 modeling

 

***Recommended SQFT Coverage @ 2 CFM per SQ FT


Stealth Pro 2.5X

Stealth Pro 2.5X

Model #  STL-PRO-2.5X
Covers Up To*** 847 sqft to 1,271 sqft
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" x 20"
Attic Venting 3.39 sqft net free area

 

DOWNLOAD TECHNICAL SHEET

 

*Listed airflow specs are tested via a device that is calibrated to NIST standards.

 

**HVI-916 airflow specs are to be used by energy consultants and builders for CA Title 24 modeling

 

***Recommended SQFT Coverage @ 2 CFM per SQ FT

 

Stealth Pro 3.3X

Stealth Pro 3.3X

Model # STL-PRO-3.3X
Covers Up To*** 1053 sqft to 1580 sqft
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" x 24"
Attic Venting 4.22 sqft net free area

 

DOWNLOAD TECHNICAL SHEET

 

*Listed airflow specs are tested via a device that is calibrated to NIST standards.

 

**HVI-916 airflow specs are to be used by energy consultants and builders for CA Title 24 modeling

 

***Recommended SQFT Coverage @ 2 CFM per SQ FT

 

Stealth Pro 4.8X

Stealth Pro 4.8X

Model # STL-PRO-4.8X
Covers Up To*** 1427 sqft to 2140 sqft
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: 47.1

Med: 43.2

Low: 33.0

Energy Efficiency

Hi: 408 Watts

Med: 225 Watts

Low: 73.9 Watts

Grille 16" x 32"
Attic Venting 5.71 sqft net free area

 

DOWNLOAD TECHNICAL SHEET

 

*Listed airflow specs are tested via a device that is calibrated to NIST standards.

 

**HVI-916 airflow specs are to be used by energy consultants and builders for CA Title 24 modeling

 

***Recommended SQFT Coverage @ 2 CFM per SQ FT

 

Stealth Pro 5.5X

Stealth Pro 5.5X

Model # STL-PRO-5.5X
Covers Up To*** 1681 sqft to 2522 sqft
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" x 32"
Attic Venting 6.73 sqft net free area

 

DOWNLOAD TECHNICAL SHEET

 

*Listed airflow specs are tested via a device that is calibrated to NIST standards.

 

**HVI-916 airflow specs are to be used by energy consultants and builders for CA Title 24 modeling

 

***Recommended SQFT Coverage @ 2 CFM per SQ FT

 

Stealth Pro 6.0X

Stealth Pro 6.0X

Model # STL-PRO-6.0X
Covers Up To*** 1862 sqft to 2794 sqft
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" x 38"
Attic Venting 7.45 sqft net free area

 

DOWNLOAD TECHNICAL SHEET

 

*Listed airflow specs are tested via a device that is calibrated to NIST standards.

 

**HVI-916 airflow specs are to be used by energy consultants and builders for CA Title 24 modeling

 

***Recommended SQFT Coverage @ 2 CFM per SQ FT

 

Stealth Pro 7.0X

Stealth Pro 7.0X

Model # STL-PRO-7.0X
Covers Up To*** 2332 sqft to 3498 sqft
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" x 38"
Attic Venting 9.33 sqft net free area

 

DOWNLOAD TECHNICAL SHEET

 

*Listed airflow specs are tested via a device that is calibrated to NIST standards.

 

**HVI-916 airflow specs are to be used by energy consultants and builders for CA Title 24 modeling

 

***Recommended SQFT Coverage @ 2 CFM per SQ FT