QuietCool Whole House Fans
QuietCool Stealth Pro X
The Ultra-Energy Efficient Whole House Fan
This Advanced Whole House Fan Cool Your Home For Pennies An Hour
The QuietCool Stealth Pro X Series Whole House Fans are the highest energy saving of any QuietCool Whole House Fan. This fan is only exclusive through certified QuietCool installers. Meaning these fans cannot be purchased directly from the manufacturer or anywhere online. These fans are unique in their own way and may come with variable speed settings depending on the model.
All QuietCool Stealth Pro X Series fans are equipped with Ultra Energy-Efficient EC (Electronic Commutated) Motors that have variable speed and provide many operational benefits. Not only does this technology greatly reduce noise, but it also conserves way more energy than any PSC motor fan.
Advantages of Electronic Commutated Motors
- Ultra High Energy Efficiency
- Lower Energy Expenses
- Less Moving Parts
- Variable Speeds
- Ultra Quiet Operation
STL PRO-1.5X
Stealth Pro-1.5 X is the perfect solution to cool any small bedroom up to 739 square feet. This option works perfectly for zoned cooling.
Zoned cooling is when you install multiple whole house fan units in your home. Most zoned systems include a fan in the master bedroom, a hallway fan, and a fan in each individual bedroom.
The Stealth Pro-1.5X is recommended for bedrooms due to the fact that it moves 1,479 CFM and only uses 66.7 Watts to run.
Product Specifications:
| Motor Voltage | 120 VAC, 60 Hz |
| Energy Use | 66.7 Watts |
| Airflow | 1,479 CFM |
| Recommended SQFT Coverage @2-3 CFM per SQFT | Covers 439 SQFT to 739 SQFT |
| Minimum Attic Clearance | 32" |
| Number of Speeds | 1 |
| Duct Diameter | 14" |
| Duct Length | 6 Feet |
| Motor Head Diameter | 14.5" |
| Motor Head Length | 13.5" |
| Dampers | Barometric Pressurized R5 Dampers |
| Controls | Included 8 Hour Electronic Timer Optional: RF Wireless Control Kit |
| Warranty | 15 Years |
| Framing | None Required |
| Joist Cutting | None Required; fits 16" or 24" on center |
| Minimum Suggested Attic Venting | 1.98 SQFT Net Free Area |
| Ceiling Rough Opening | 14.25" x 14.25" |
| Removable Grille Outside Dimension | 16" x 16" |
STL PRO-2.5X
The QuietCool Stealth Pro-2.5X is the perfect solution for large bedrooms up to 1,271 square feet. This option works perfectly for zoned cooling.
Zoned cooling is when you install multiple whole house fan units in your home. Most zoned systems include a fan in the master bedroom, a hallway fan, and a fan in each individual bedroom.
The Stealth Pro-2.5X is recommended for master bedrooms. Moving 2,541 CFM and only using 157 Watts at high speed to run, this whole house fan system can cool your master bedroom/room immediately.
Products Specifications:
| Motor Voltage | 120 VAC, 60 Hz |
| Energy Use | Hi: 157 Watts / Low: 82.3 Watts |
| Airflow | Hi: 2,541 CFM / Low: 2,018 CFM |
| dBA | Hi: 43.2 / Low: 37.2 |
| Recommended SQFT Coverage @2-3 CFM per SQFT | Covers 847 SQFT to 1,271 SQFT |
| Minimum Attic Clearance | 34" |
| Number of Speeds | 2 |
| Duct Diameter | 16" |
| Duct Length | 6 Feet |
| Motor Head Diameter | 16.5" |
| Motor Head Length | 13.5" |
| Dampers | Barometric Pressurized R5 Dampers |
| Controls | Included 8 Hour Electronic Timer & Hi-Low-Off Switch Optional: RF Wireless Control Kit |
| Warranty | 15 Years |
| Framing | None Required |
| Joist Cutting | None Required; fits 16" or 24" on center |
| Minimum Suggested Attic Venting | 3.39 SQFT Net Free Area |
| Ceiling Rough Opening | 14.25" x 18.25" |
| Removable Grille Outside Dimension | 16" x 20" |
STL PRO-3.3X
The QuietCool Stealth Pro-3.3X is the perfect solution for small-sized homes up to 1,580 square feet that use whole house fans for zoned cooling.
Zoned cooling is when you install multiple whole house fan units in your home. Most zoned systems include a fan in the master bedroom, a hallway fan, and a fan in each individual bedroom.
The Stealth Pro-3.3X gets installed in the hallway of your home. Another option to maximize the cooling in your home is to install a Stealth Pro-3.3X in your hallway and a Stealth Pro-2.5X in your master bedroom. The Stealth Pro-3.3X moves approximately 3,159 CFM and only uses 264 Watts at high speed to run.
Product Specifications:
| Motor Voltage | 120 VAC, 60 Hz |
| Energy Use | Hi: 264 Watts / Low: 74.6 Watts |
| Airflow | Hi: 3,159 CFM / Low: 1,980 CFM |
| dBA | Hi: 47.4 / Low: 36.1 |
| Recommended SQFT Coverage @2-3 CFM per SQFT | Covers 1,053 SQFT to 1,580 SQFT |
| Minimum Attic Clearance | 34" |
| Number of Speeds | 2 |
| Duct Diameter | 16" |
| Duct Length | 6 Feet |
| Motor Head Diameter | 16.5" |
| Motor Head Length | 13.5" |
| Dampers | Barometric Pressurized R5 Dampers |
| Controls | Included 8 Hour Electronic Timer & Hi-Low-Off Switch Optional: RF Wireless Control Kit |
| Warranty | 15 Years |
| Framing | None Required |
| Joist Cutting | None Required; fits 16" or 24" on center |
| Minimum Suggested Attic Venting | 4.22 SQFT Net Free Area |
| Ceiling Rough Opening | 14.25" x 22.25" |
| Removable Grille Outside Dimension | 16" x 24" |
STL PRO-4.8X
The QuietCool Stealth Pro-4.8X is the perfect hallway fan for medium sized homes up to 2,140 square feet and also good for zoned cooling.
Zoned cooling is when you install multiple whole house fan units in your home. Most zoned systems include a fan in the master bedroom, a hallway fan, and a fan in each individual bedroom.
The Stealth Pro-4.8X gets installed in the hallway central to your home. To maximize the cooling in your home, we suggest going with the Stealth Pro-4.8X in your hallways and a Stealth Pro-2.5X for your master bedroom. The Stealth Pro-4.8X moves approximately 4,280 CFM and uses 408 Watts at high speed to run.
Product Specifications:
| Motor Voltage | 120 VAC, 60 Hz |
| Energy Use | Hi: 408 Watts / Med: 225 Watts / Low: 73.9 Watts |
| Airflow | Hi: 4,280 CFM / Med: 3,500 CFM / Low: 2,361 CFM |
| dBA | Hi: 47.4 / Med: 43.2 / Low: 33.6 |
| Recommended SQFT Coverage @2-3 CFM per SQFT | Covers 1,427 SQFT to 2,140 SQFT |
| Minimum Attic Clearance | 36" |
| Number of Speeds | 3 |
| Duct Diameter | 18" |
| Duct Length | 9 Feet |
| Motor Head Diameter | 18.5" |
| Motor Head Length | 13.5" |
| Dampers | Barometric Pressurized R5 Dampers |
| Controls | Included 8 Hour Electronic Timer & Double 3-way Switch Optional: RF Wireless Control Kit |
| Warranty | 15 Years |
| Framing | None Required |
| Joist Cutting | None Required; fits 16" or 24" on center |
| Minimum Suggested Attic Venting | 5.71 SQFT Net Free Area |
| Ceiling Rough Opening | 14.25" x 30.25" |
| Removable Grille Outside Dimension | 16" x 32" |
STL PRO-5.5X
The QuietCool Stealth Pro-5.5X is the perfect hallway fan for a large sized home up to 2,522 square feet and also great for zoned cooling.
Zoned cooling is when you install multiple whole house fan units in your home. Most zoned systems include a fan in the master bedroom, a hallway fan, and a fan in each individual bedroom.
The Stealth Pro-5.5X gets installed in the hallway central to your home. To maximize the cooling in your home, we suggest going with the Stealth Pro-5.5X in your hallway and a Stealth Pro-2.5X in your master bedroom. The Stealth Pro-5.5X moves approximately 5,044 CFM and uses 490 Watts at high speed to run.
Product Specifications:
| Motor Voltage | 120 VAC, 60 Hz |
| Energy Use | Hi: 490 Watts / Med: 268 Watts / Low: 88 Watts |
| Airflow | Hi: 5,044 CFM / Med: 4,238 CFM / Low: 2,870 CFM |
| dBA | Hi: 50.7 / Med: 45.7 / Low: 35.6 |
| Recommended SQFT Coverage @2-3 CFM per SQFT | Covers 1,681 SQFT to 2,522 SQFT |
| Minimum Attic Clearance | 38" |
| Number of Speeds | 3 |
| Duct Diameter | 20" |
| Duct Length | 9 Feet |
| Motor Head Diameter | 20.5" |
| Motor Head Length | 13.5" |
| Dampers | Barometric Pressurized R5 Dampers |
| Controls | Included 8 Hour Electronic Timer & Double 3-way Switch Optional: RF Wireless Control Kit |
| Warranty | 15 Years |
| Framing | None Required |
| Joist Cutting | None Required; fits 16" or 24" on center |
| Minimum Suggested Attic Venting | 6.73 SQFT Net Free Area |
| Ceiling Rough Opening | 14.25" x 30.25" |
| Removable Grille Outside Dimension | 16" x 32" |
STL PRO-6.0X
The QuietCool Stealth Pro-6.0X is the perfect hallway fan for a large/extra large sized home up to 2,794 square feet and also great for zoned cooling.
Zoned cooling is when you install multiple whole house fan units in your home. Most zoned systems include a fan in the master bedroom, a hallway fan, and a fan in each individual bedroom.
The Stealth Pro-6.0X gets installed in the hallway central to your home. To maximize the cooling in your home, we suggest going with the Stealth Pro-6.0X in your hallway and a Stealth Pro-2.5X in your master bedroom. The Stealth Pro-6.0X moves approximately 5,587 CFM and uses 462 Watts at High Speed and 113 Watts at Low Speed to run.
Product Specifications:
| Motor Voltage | 120 VAC, 60 Hz |
| Energy Use | Hi: 462 Watts / Med: 210 Watts / Low: 113 Watts |
| Airflow | Hi: 5,587 CFM / Med: 4,262 CFM / Low: 3,428 CFM |
| dBA | Hi: 51.1 / Med: 45.7 / Low: 38.5 |
| Recommended SQFT Coverage @2-3 CFM per SQFT | Covers 1,862 SQFT to 2,794 SQFT |
| Minimum Attic Clearance | 42" |
| Number of Speeds | 3 |
| Duct Diameter | 22" |
| Duct Length | 9 Feet |
| Motor Head Diameter | 22.5" |
| Motor Head Length | 13.5" |
| Dampers | Barometric Pressurized R5 Dampers |
| Controls | Included 8 Hour Electronic Timer & Double 3-way Switch Optional: RF Wireless Control Kit |
| Warranty | 15 Years |
| Framing | None Required |
| Joist Cutting | None Required; fits 16" or 24" on center |
| Minimum Suggested Attic Venting | 7.45 SQFT Net Free Area |
| Ceiling Rough Opening | 14.25" x 36.25" |
| Removable Grille Outside Dimension | 16" x 38" |
STL PRO-7.0X
The QuietCool Stealth Pro-7.0X is the perfect hallway fan for an extra large sized home up to 3,498 square feet and also great for zoned cooling.
Zoned cooling is when you install multiple whole house fan units in your home. Most zoned systems include a fan in the master bedroom, a hallway fan, and a fan in each individual bedroom.
The Stealth Pro-7.0X gets installed in the hallway central to your home. To maximize the cooling in your home, we suggest going with the Stealth Pro-7.0X in your hallway and a Stealth Pro-2.5X in your master bedroom. The Stealth Pro-7.0X moves approximately 6,996 CFM and uses 725 Watts at High Speed and 166 Watts at Low Speed to run.
Product Specifications:
| Motor Voltage | 120 VAC, 60 Hz |
| Energy Use | Hi: 725 Watts / Med: 319 Watts / Low: 166 Watts |
| Airflow | Hi: 6,996 CFM / Med: 5,448 CFM / Low: 4,308 CFM |
| dBA | Hi: 54.3 / Med: 47.4 / Low: 41.4 |
| Recommended SQFT Coverage @2-3 CFM per SQFT | Covers 2,332 SQFT to 3,498 SQFT |
| Minimum Attic Clearance | 44" |
| Number of Speeds | 3 |
| Duct Diameter | 24" |
| Duct Length | 9 Feet |
| Motor Head Diameter | 24.5" |
| Motor Head Length | 13.5" |
| Dampers | Barometric Pressurized R5 Dampers |
| Controls | Included 8 Hour Electronic Timer & Double 3-way Switch Optional: RF Wireless Control Kit |
| Warranty | 15 Years |
| Framing | None Required |
| Joist Cutting | None Required; fits 16" or 24" on center |
| Minimum Suggested Attic Venting | 9.33 SQFT Net Free Area |
| Ceiling Rough Opening | 14.25" x 36.25" |
| Removable Grille Outside Dimension | 16" x 38" |
What’s Included
High Airflow Grille
All QuietCool Stealth Pro X Whole House Fans come with a removable high airflow grille. This is what separated the living space from the attic. Creating a stylish look to your ceiling. Additional R-Value can be added to this system with a winterized kit increasing the R-value to R45.
Airtight Damper Box
QuietCool damper boxes are equipped with R5 Insulated doors that prevent any heat transfer from the attic to the living area. The barometric pressure damper doors utilize gravity to secure the airtight damper box ensuring there will be no heat/cooling loss between the home and attic.
Wall Switch Controls
All QuietCool Stealth Pro X models include a standard wall switch that operates on an 8-Hour countdown timer and has variable speed controls. We also offer a wireless control kit option that has a 100ft range control, so you can control your fan anywhere inside your home