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How Do I Get My Fan Installed?

Installation is straightforward and simple. Ideally if you are handy you can install the fans yourself and have them wired by a licensed electrician or simply plug them in.  Normally any handyman, electrician or contractor can install a whole house fan.



How Do QuietCool Fans Work?

Because heat rises, the rooms upstairs and especially your attic is generally much hotter than the rest of your home.  This hot air acts like a heating blanket that keeps your entire home hot, even into the cool evening hours.

QuietCool Fans remove the hot and stale air from your entire home and replaces it with cool outside air.  The fans Quietly pull the cool air into the home through several opened windows.  As the air circulates, the fans suck the air up into your attic.  This creates a positive pressure in the attic causing the hot air to be pushed out your attic through the existing attic vents.  This continuous circulation of air not only cools your attic, but also cools your entire living space.  You can actually feet a cool breeze of air.

The motors and flexible ducting for the QuietCool Fans are installed in your attic space so the only thing visible from inside your home is an attractive, white ceiling grille and a switch & timer on the wall.  We recommend installing smaller fans (like the QC-1500, QC ES-1500, QC ES-2250 or the QC-2250) in each of your occupied bedrooms and a larger QuietCool fan in the hallway.  Yes, you can sleep with the QuietCools running on warm summer nights.

Utility companies report that the installation of a whole house fan can cut some air conditioning bills in half!

QuietCool Fans Are Truly Amazing! They Are Maintenance Free and Come With A 10 Year Warranty!

Order Your QuietCool Fans Today!

QC ES-6400 Energy Saver Dual Motor Whole House Fan 6004 CFM

ES 6400 Quiet Cool
MSRP: $2,051.00
Price: $1,849.00
You Save: $202.00 (10 %)
free shipping

The QC ES-6400 ES Energy Saver Whole House Fan Uses, Uses Dual AC/DC Motors, Two Single-Speed Motors that produce Air Flow Hi: 6004 CFM / Low: 3888 CFM.  Cools Up To 3,000 Sq Feet

The QuietCool QC ES-6400 (U.S. Patent #7497774) will help you slash your A/C related electricity costs by up to 90% and pays for itself faster than any other “green energy” product on the market today.

The QC ES-6400, also known as the “green giant”, features a super powerful, dual motor head design, and the best part, this monster fan only draws an efficient 494 watts on high and 179 watts on low speed while moving an impressive Air Flow Hi: 6,004 CFM / Low: 3,888 CFM

This is the most powerful whole house fan in our Energy Saver line. This will cool and ventilate an entire home in minutes. Install one ES-6400 in your hallway and a couple of ES-1500's in your bedrooms and watch your electricty bill decrease and your comfort increase.

Locate this great fan in a central area in your home and add individual fans in each bedroom for individualized, zoned cooling and take maximum control of your home energy costs.


This is the right fan to install in a larger room or hallway in combination smaller individual bedroom fans (QC ES-1500, QC CL-1500 or QC CL-2250) to attain the correct air flow for your home and for zoned control.

*We recommend wiring your fans to a the QuietCool WiFi Hub. This will allow you to control your fans from your SmartPhone or I-Pad. Using the Wi-Fi hub and Free control app download is easier to install and gives you greater control over your fans. You will need to install a WiFi Hub on each of your fan motors (you need two hubs for this 2 motor fan)  Using the WiFi Hub also simplifies the installation process since wires will not have to be pulled to the wall switch.  If you prefer to use the traditional wall mounted controls and switch, we recommend the IT-30020 double stack switch, IT-30070 8hr Timer & Plate. 

Note: For vertical wall installations (meaning the grill will be mounted on a wall instead of the ceiling) commonly used in rooms with attic space adjacent to a room with a vaulted ceiling) you will need to order a vertical wall adapter. The QC CL-6400 uses a 14" x 36" Vertical Wall Adapter VA-1436

FREE Shipping On This Item: Up To A $200.00 Value!

Download The Energy Saver "ES" Line Installation Guide(.pdf)specification sheet QC CL-6400

Download QuietCool Product Information Sheet (.pdf)qc-3100 fan manual 


For cold weather locations increase your insulation value from R-5 to R-40 with the optional winter grille & insert kit. Item # WI-KIT-1436 

QC ES-6400 Specifications :

Motor Voltage 120 VAC, 60 Hz
Energy Use Hi: 537 Watts / Low: 256 Watts
Air Flow Hi: 6004 CFM / Low: 3888 CFM
Square Foot Coverage @ 2 CFM per SQ FT Covers up to 3000 SQ FT
# of Speeds 2
Duct Diameter 16"
Duct Length 6 feet
Motor Head Diameter 16 1/2"
Motor Head Length 13 1/2"
Sound Level in Room (measured 1m from grille) Hi: 50 dB
Low: 44 dB
Dampers Barometric Pressurized R5 Dampers
Controls (not included) 8 Hour Timer and Double Stack Switch or Wi-Fi Smart
Control (not included)
Warranty 10 Years
Framing None required
Joist Cutting None required; fits 16” or 24” on center
Minimum Suggested Attic Venting 8.0 SQ FT net free area
Ceiling Rough Opening 14 1/4" X 36 1/4"
Removable Grille Outside Dimension 16" x 38"
Shipping Weight 87 lbs.
Box Dimensions 42" x 20" x 38"
In the Box;  QC ES-6400 Motorheads - Damper Box - Ceiling Grille - 6 foot duct (2) - Cut-out template - Accessory bag (2) - Window locks

Item Number: QC ES-6400

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Sizing Guidelines:

Basic Level
Of Cooling: Calculate approximately 2.0
to 2.5 CFM Per Square Feet Of Living Space

Best Level Of Cooling: Calculate approximately 2.5 to 3.0 CFM Per Square Feet Of Living Space

More On System Sizing -
Buying the right sized QuietCool system is important to maximum cooling and ventilating efficiency.  It is strongly recommended that you install fans that have between 2-3 times your home’s square footage in total CFM of airflow.



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