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Introducing The Quiet Giant Whole House Fan. New design has an internal back draft gravity damper system creates a positive seal in the metal fan housing which isolates the attic air from the inside air.

NEW - This fan is currently listed and approved by the California Energy Commission

Moves 4,534 CFM of Air and Generates Only 0.7 Sones, For An Amazingly Quiet and Efficient System. There is nothing else on the market like this!

The Quiet Giant is a powerful 4534 CFM, 2 speed whole house fan. This revolutionary new product is the perfect compliment to the existing line of QC-1500 whole house fans.

The Quiet Giant can be used to create a powerful, yet amazingly quiet flow of air in your home. Installed in combination with our existing QC-1500 system will give you unprecedented flexibility in designing the perfect whole house cooling solution to meet your specific needs.

The Quiet Giant consist of basically two QC-1500 units with larger higher speed motors and two 6 foot flexible ducts connected to one ceiling box and one ceiling grille.

The ceiling box is 16" x 38" ceiling box (O.S. dim.) which allows it to be installed without an adapter kit in attics with 24" or 16" on-center framing. There are two motor housings that are approximatley 16" in diameter. The 6'long ang 16" in diameter flexible ducting is attached to the back of the motor housing.

The Quiet Giant is designed to be installed in a central hallway and should be used as part of a multi-fan configuration. By installing a Quiet Giant in the central hallway and installing the standard QC-1500 fans in your occupied bedrooms, you will generate the maximum air flow and desired cooling effect.

The Quiet Giant whole house fans are also perfect for the homeowner that wants to replace their loud, traditional whole house fan with a much quieter whole house fan system that you can run all night.

QC-4500 Specifications:

Motor Voltage	120 V. AC, 60 HZ.
Motor Amperage	2.6 Amps Low Speed / 5.2 Amps High Speed
Power Consumption	362 Watts Low Speed / 624 Watts High Speed
Motor Speed	1,560 RPM
Air Flow @0.1" SP	2,267 CFM Low Speed / 4,534 CFM High Speed - California Energy Commission Tested
Duct Diameter	16"
Duct Length	6 feet
Motor Head Diameter	16 1/2"
Motor Head Length	19"
Sound Level In Room	56 dBA
Ceiling Rough Opening	14 1/4"x 36 1/4"
R Value at Closed Damper	R 4.2
Intake Grille Outside Dimensions*	16"x38"
Intake Grill Color	White
Airflow Seal System	Internal Gravity Damper Device
Minimum Height Clearance For Ceiling Box*	24"
Shipping Dimensions & Weight	39"x17"x37" Oversized - 75 lbs.

*The dimensions of the QC4500 ceiling box is 14" x 36" x 7" high. You need 24" of clearance from the top of the ceiling joist to the bottom of the roof rafters.

A QC-4500, Quiet Giant ships in one very large box. Weight - 75 lbs Case Dim 39" x 17" x 37"

To properly control the Quiet Giant dual motors, we recommend using the dual switch and timer accessory (sold separately. see accessories above). Do not use variable speed control switches.

The Quiet Cool fans are 100% made in the USA and come with a 10-year manufacturer warranty.

READ INSTALLATION INSTRUCTIONS (opens in new window)