Professional Installation
Stealth Pro X Whole House Fan
Our Stealth Pro X Series is the efficient Whole House Fan that mastered low cost cooling with powerful results. With our sleek design, patented technology, and reliable production, you can utilize an ultra-energy efficient motor to keep your home cool and your money saved.
- Electronically Commutated Motor (ECM)
- 66.7 watts to 725 watts depending on the model
- 1,479 CFM to 6,996 CFM depending on the model
Give us a call if you need assistance 1‑888‑QUIETCOOL
FEATURES
Hover over any unique product piece to learn more about it.
Keyhole straps that allow you to adjust up or down without removing the screw so the fan can be hung in nearly every attic space. High-Performance Acoustical Ducting:
Noise dampening technology with insulated ducting that is used to separate the Steel Housing from the living space.Duct Clasp:
Duct clasp that helps secure the ducting to the Airtight Damper Box and Steel Housing without screws or tape.Airtight Damper Box:
Damper Box with R5 insulated doors that prevent any heat transfer from the attic to the living area.High Airflow Grille:
The removable grille that can snap in or out for easy cleaning.R5 Damper Doors:
Barometric pressurized damper doors that utilize gravity to secure the Airtight Damper Box.Heavy Duty Steel Housing:
Powder-coated steel housing that protects the fan from wear and tear.Ultra Energy-Efficient ECM Motor:
The brush-free Electronically Commutated Motor is the world’s most efficient motor which increases up to 70% efficiency in lower speeds.Computer Balanced Fan Blades:
High-performance fan blades that cut through the air in the most efficient and effective way possible.Hand Guard:
Guard that protects from potential injury or fan obstruction.Duct Collar:
The adjustable collar that helps seal and secure the Heavy Duty Steel Housing and the Airtight Damper Box with no air leakage.
QC STL PRO-1.5X
CFM 1,479
HVI 916 CFM 1,040
Watts 66.7
Amps 0.9
Volts 120V
Vertical Adapter VA-1414 (optional)
Covers up to 439 SQFT to 739 SQFT
Recommended Attic Venting 1.98 SQFT
Grille Size 16” x 16”
dBA 37.2
QC STL PRO-2.5X
CFM Hi: 2,541 / Low: 2,018
HVI 916 CFM Hi: 1,920 / Low: 1,510
Watts Hi: 157 / Low: 82.3
Amps Hi: 2.12 / Low: 1.12
Volts 120V
Vertical Adapter VA-1418 (optional)
Covers up to 847 SQFT to 1271 SQFT
Recommended Attic Venting 3.39 SQFT
Grille Size 16” x 20”
dBA Hi: 42.7 / Low: 37.2
QC STL PRO-3.3X
CFM Hi: 3,159 / Low: 1,980
HVI 916 CFM Hi: 2,350 / Low: 1,470
Watts Hi: 264 / Low: 74.6
Amps Hi: 3.44 / Low: 1.02
Volts 120V
Vertical Adapter VA-1422 (optional)
Covers up to 1053 SQFT to 1580 SQFT
Recommended Attic Venting 4.22 SQFT
Grille Size 16” x 24”
dBA Hi: 47.4 / Low: 36.1
QC STL PRO-4.8X
CFM Hi: 4,280 / Med: 3,500 / Low: 2,361
HVI 916 CFM Hi: 3,130 / Med: 2,560 / Low: 1,670
Watts Hi: 408 / Med: 225 / Low: 73.9
Amps Hi: 5.16 / Med: 3.00 / Low: 1.07
Volts 120V
Vertical Adapter VA-1430 (optional)
Covers up to 1,427 SQFT to 2,140 SQFT
Recommended Attic Venting 5.71 SQFT
Grille Size 16” x 32”
dBA Hi: 47.4 / Med: 41.6 / Low: 33.0
QC STL PRO-5.5X
CFM Hi: 5,044 / Med: 4,238 / Low: 2,870
HVI 916 CFM Hi: 3,750 / Med: 3,070 / Low: 2,010
Watts Hi: 490 / Med: 268 / Low: 88.0
Amps Hi: 6.31 / Med: 3.67 / Low: 1.30
Volts 120V
Vertical Adapter VA-1430 (optional)
Covers up to 1,681 SQFT to 2,522 SQFT
Recommended Attic Venting 6.73 SQFT
Grille Size 16” x 32”
dBA Hi: 50.7 / Med: 43.6 / Low: 35.6
QC STL PRO-6.0X
CFM Hi: 5,587 / Med: 4,262 / Low: 3,428
HVI 916 CFM Hi: 4,030 / Med: 3,070 / Low: 2,440
Watts Hi: 462 / Med: 210 / Low: 113
Amps Hi: 5.91 / Med: 2.90 / Low: 1.65
Volts 120V
Vertical Adapter VA-1436 (optional)
Covers up to 1,862 SQFT to 2,794 SQFT
Recommended Attic Venting 7.45 SQFT
Grille Size 16” x 38”
dBA Hi: 49.3 / Med: 42.5 / Low: 38.5
QC STL PRO-7.0X
CFM Hi: 6,996 / Med: 5,448 / Low: 4,308
HVI 916 CFM Hi: 5,200 / Med: 3,990 / Low: 3,180
Watts Hi: 725 / Med: 319 / Low: 166
Amps Hi: 8.61 / Med: 4.09 / Low: 2.27
Volts 120V
Vertical Adapter VA-1436 (optional)
Covers up to 2,332 SQFT to 3,498 SQFT
Recommended Attic Venting 9.33 SQFT
Grille Size 16” x 38”
dBA Hi: 51.7 / Med: 45.3 / Low: 41.4
Quiet Operation
These whisper-quiet and energy-efficient wonders are the #1 residential cooling & ventilation appliance on the market
How it Works
Our Whole House Fans utilize what already exists to create something offered nowhere else. Open two or three windows a few inches wide, turn on your QuietCool Whole House Fan, and experience fresh, cool air replacing your indoor air in 3-4 minutes. Your Whole House Fan will quietly pull air through the windows, into the attic, and out the attic vents giving you a cost effective way to keep your home cool and healthy.
QuietCool Is The V In HVAC
Clean Air for the Indoor Generation
According to the American Lung Association, homes are like lungs, they need to breathe to make sure that fresh air comes in and dirty air goes out. To keep your home safe you have to introduce fresh, outdoor air to dilute these indoor pollutants. Turning on your QuietCool Whole House Fan means you no longer have to recycle your air, you can let your home breathe.
Clean Air for the Indoor Generation
According to the American Lung Association, homes are like lungs, they need to breathe to make sure that fresh air comes in and dirty air goes out. To keep your home safe you have to introduce fresh, outdoor air to dilute these indoor pollutants. Turning on your QuietCool Whole House Fan means you no longer have to recycle your air, you can let your home breathe.
Save up to 50-90%
Save up to 50-90% on A/C related costs and even more on preventative care that protects your attic, home, and A/C from costly damages with a QuietCool Whole House Fan. You won’t only use your A/C less but your home will be cooler longer because our products do something A/C can’t; cool the thermal mass of your home.
Save up to 50-90%
Save up to 50-90% on A/C related costs and even more on preventative care that protects your attic, home, and A/C from costly damages with a QuietCool Whole House Fan. You won’t only use your A/C less but your home will be cooler longer because our products do something A/C can’t; cool the thermal mass of your home.
Vertical Adapter
Don’t have a conventional attic space above your living area? Utilize a Vertical Adapter and cool your home with a side attic. These adapters were created as some homes do not have attics above their living area. Some homes throughout the country have a side attic against their wall and only enough attic space for our Whole House Fans in this area. When this is the case, these homes can use a Vertical Adapter so our R5 Damper Doors can still operate successfully while offering the entire home cooling and comfort.
ZAP
Zone Air Pathway
This innovative pathway allows any room to get the cooling and comfortability of QuietCool while keeping your privacy. Installed above any bedroom door and fitted with baffle technology that reduces sound and ensures privacy through the vent makes these a necessity in single system homes. They work simply as a conduit for the air to travel through as your QuietCool Whole House Fan still pulls air out of your open window it simply passes through the ZAP before ascending into the attic! If you want privacy AND cooling, get a ZAP installed above your bedroom door today!
ZAP
Zone Air Pathway
This innovative pathway allows any room to get the cooling and comfortability of QuietCool while keeping your privacy. Installed above any bedroom door and fitted with baffle technology that reduces sound and ensures privacy through the vent makes these a necessity in single system homes. They work simply as a conduit for the air to travel through as your QuietCool Whole House Fan still pulls air out of your open window it simply passes through the ZAP before ascending into the attic! If you want privacy AND cooling, get a ZAP installed above your bedroom door today!
Whole House Fan Sizing Formula
We generally utilize a formula of 2, 2.5, or 3 CFM (Cubic Feet per Minute) per square foot of living area. A decent system would be 2 CFM, a better system would be 2.5 CFM, and the greatest system would be 3 CFM. Simply use the calculator on this website to determine how much CFM you require in your home. This mathematical formula will always work for any size home, and remember that the more airflow you have, the better.
The Size Factor
There are two more variables to keep in mind when determining the size of a whole house fan.
Climate: A decent cooling system should function well in a coastal environment where the climate is cooler If you live in a desert area where the environment is hot during the day but cooler at night, the best approach would be to use a solar power system.
Ceilings: If the ceilings in your home are higher than 8 feet, you’ll want to size the system a little larger to account for the greater air volume.
Which Whole House Fan is Right For You?
Please answer the three questions accurately as possible to see your suggested QuietCool Pro Series Fan System.
VENTING CALCULATOR
Enter the number of vents in your home for each vent type.
THE DREAM VENTILATION SYSTEM
ZONED (Multi-Fan) SYSTEM
Whole House Fan + Whole House Fan
A multi-zoned ventilation and air-conditioning system allows the homeowner complete control over their demands. A zoned system’s total CFM requirements must be met by the combined CFM of all zoned units (not just one fan). When the entire house needs to be cooled, all designated fans can be activated simultaneously. A zoned system, on the other hand, provides for more precise airflow management for each individual room.
THE PERFECT SAVINGS TANDEM
Whole House Fan + Attic Fan
Whole house fans and attic fans are the perfect companion products that serve two different purposes for the same cause. Your whole house fan will pre-cool your house the night before and help cool the thermal mass of your home to keep your home cooler the next day. The attic fan will help keep your attic cooler during the hottest parts of the day. Your end result can be huge savings! Say goodbye to the days of your A/C cycling on and off causing expensive electric bills.
Thousands of 5 Star Reviews
