Whole House Fans

We now stock the QuietCool Trident whole house fans for retail sale!
We now also carry the Cool Attic ducted whole house fans.

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Quickly cool your home by bringing in Colorado’s cool night air.

These house fans are in stock for immediate sale.

QuietCool Trident Line 

Model For Areas of Vents
QC TRI PRO 1.5 350 – 800 sf 288 si
QC TRI PRO 2.5 500 - 1370 sf 432 si
QC TRI PRO 3.3 700 - 1840 sf 590 si
QC TRI PRO 4.8 1100 - 2650 sf 890 si
QC TRI PRO 5.5 1300 - 3200 sf 1000 si
QC TRI PRO 6.0 1400 - 3400 sf 1150 si
QC TRI PRO 6.5 1500 - 3650 sf 1224 si
QC TRI PRO 7.0 1600 - 3800 sf 1300 si

The TRI 6.5 is slightly more expensive because it is quieter.
The QuietCool Trident fans have a 15 year warranty, a removable grille, and include an electronic timer and speed control switch.
We have been having a lot of trouble with the QC Wi-Fi controls so we figured out how to use regular smarthome controls.

Cool Attic Ducted Whole House Fans 

Model For Areas of Vents
Your Price
CX1401 600 – 1400 sf 550 si $449
CX1801 800 – 2000 sf 625 si $699

The Cool Attic Fans include a 12 foot uninsulated duct for greater flexibility in placement. Includes an electronic timer and speed control switch.
The Cool Attic Fans really move a lot of air for a very reasonable price. They also have insulated doors. They are not quite as quiet as the QuietCool fans but they offer a great value, especially for the homeowner who does not mind some "white noise" in the background.

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In the Colorado summer it cools quickly as the sun sets. Whole House fans take advantage of this to cool your home quickly in the evening. A whole house fan is installed in the ceiling in a central location. When the fan is turned on it pulls the hot air out of the house and blows it into the attic.

Not your Grandfathers house fan!

Traditional whole house fans were designed in the 1920's. We do not use many things from the 1920's. They did not have computers or cell phones or color TVs. Traditional whole house fans work really well to move the air. But, they waste a lot of energy. In the winter, the shutters do not close tightly, allowing warm air from the house to go into the attic. Also, there is no insulation above the shutters. If an energy audit is done on a home with a traditional whole house fan, the fan is usually the largest heat loss.

Our solution for your Colorado home.

Energy-efficient, low-noise whole house fans are now available to solve these problems. Modern fans are suspended from the rafters and are connected to the ceiling grille with flexible duct. Dampers close when the fan is not running, sealing the air inside the home. These modern fans are so quiet and energy efficient that they make traditional whole house fans seem old-fashioned.

We have 5 operating whole house fans in our showroom so you can see and hear them before you buy.

Contact us for a free estimate!

Animated Quiet Cool logo with a spinning an.       Image of a Quiet Cool QC 2250 whole house fan.

QuietCool whole house fans

QuietCool is our most popular whole house fan system. They are very quiet, energy efficient and easy to install. They are also the least expensive of the modern whole house fans.

The fan itself hangs from the rafters and is connected to the ceiling grille by insulated, flexible ducting, which makes the fan very quiet. Internal dampers close when the fan is not running to seal the attic opening. The ceiling grille and damper fit between the ceiling joists. No joist cutting is required.

QuietCool has 4 separate lines of whole house fans.

Classic Line

fans have insulated dampers and a 10 year warranty. They are for sale at both our retail and our online store.

Energy Saver Line

fans have energy efficient "brushless" motors and use about 30% less electricity than the Classic Line. For sale retail and online.

The Trident Pro Line

is only available for installation through QuietCool Dealers like Vent Masters. They include a timer and have removable grilles for easy cleaning. R-40 insulation pads are available for cold climates. They have a 15 year Warranty.

The Stealth Pro Line

is also only available from Dealers like Vent Masters. They have removable grilles, a timer, a 15 year warranty, and have the energy saving ecm motors.

Installation costs start at $600 and vary depending on the fan and your home. Call or email for a Free estimate.
These are usually in stock.


AirScape logo      Photo of an AirScape 4.4e whole house fan.

AirScape whole house fans

The AirScape is a fine example of a low-noise, energy efficient whole house fan. These fans use high quality precision fans and have motorized, insulated doors that close when the fan is not in use. The ceiling grille and damper fit between the ceiling joists. No joist cutting is required.
The e-series fans have the new ecm motors for greater energy efficiency. The AS 4.4e fans are 6 speed fans with remote controls and 12 hour timers included. They are web enabled so you can monitor them with your smartphone.
The Kohilo line features the high quality AirScape fan but with a butterfly damper instead of the motorized, insulated damper.
We have an AirScape 4.4e on display in our showroom.


Image of traditional whole house fan.

Traditional whole house fans

Traditional whole house fans are very effective but old fashioned. They have shutters that open when the fan is on and close when it is off. These shutters are not air tight and lose a lot of heat in the winter.
Direct drive fans have the fan attached to the motor while a belt drive fan has a fan belt connecting the motor to the fan. Belt drive fans usually last longer. They are available in several sizes. A 24" fan moves about 4500 cfm (cubic feet per minute) of air which is for homes of 1000 to 3000 sf (square feet). A 30" fan moves about 6000 cfm and is for homes of 1260 to 3800 sf. Many installers will only install 36" fans and then they will tell you to only run them on low. These large 36" fans are really too big for most homes.
When home energy audits are done, quite often a traditional whole house fan is the largest source of heat loss in the winter. These fans must be winterized by adding a moisture barrier and insulation. We have insulation kits in stock for traditional whole house fans.
Vent Masters can remove your existing old fashioned fan and replace it with a modern, quiet and energy efficient model.
The only traditional whole house fan we stock is the AirVent 24 inch direct drive. It is a sweet little fan. It moves a lot of air fairly quietly for a low price.


Image of Tamarack Technologies Logo.                 Image of the Ghost whole house fan.

Tamarack Technologies

Tamarack Technologies has the only whole house fan with motorized R-38 dampers. The "Ghost" includes a 2 speed remote control. Tamarack also has ducted fans which we have not had a chance to try yet.

Tamarack products are available on our online store at www.ventmastersstore.com.


Vent Masters reception area with our smiling office manager. Photo of Vent Masters main warehouse area for whole house fans.

Our reception area and our main warehouse.

We like to keep a large selection of whole house fans in stock. We also stock hundreds of small round vents for shipment from our online store. Some of these vents are on the shelves in the right hand picture.

Cool, fresh air comes in

Airflow diagram of cool air coming in and hot air going out the whole house fan.

Hot inside air goes out

Traditional whole house fan louvers - open

image of open louvers on a whole house fan

Traditional louvers from the attic

Photo of whole house fan louver with light coming throuh.

You can easily see light leaking up which means there is warm air leaking in the winter.

QuietCool Dealer Badge

Photo of whole house fan louver with light coming throuh.