Sizing & Pricing a Whole House Fan System from CHC

At CHC, we pride ourselves on creating the best cooling solution for your unique home.
To start the process of creating an initial estimate for your new whole house fan system, please see our Estimate Form.

A STANDARD WHOLE HOUSE FAN SYSTEM CONSISTS OF TWO PARTS: the Fan and the Attic Ventilation

THE FAN

The first step in creating a great whole house fan system is to choose the correctly sized fan for your home.  Our recommendation is to install a fan that provides at least 3 cfm (cubic feet per minute) for every square foot above ground in your home. With this amount of airflow, the fan will achieve an air exchange in approximately 3 minutes, and the whole house fan can serve as your primary home cooling system.

ATTIC VENTILATION

The second step in creating a highly efficient whole house fan system is to match the ventilation in the attic to the airflow from the fan.  CHC and our fan manufacturers recommend a minimum of 1 square foot (144 sq. in.) of net free (sfnf) ventilation for every 750 cfm of air moved by the fan. Most homes have about 2 sfnf in place, so additional venting is usually required to complete the installation of a whole house fan system. We install the finest all-metal oversized (144 sq in of net free) roof vents available.

A SUPERIOR WHOLE HOUSE SYSTEM CONSISTS OF THREE PARTSthe Fan, the Attic Ventilation & a Powered Vent

We use the above metrics to create a home and attic ventilation system that includes the appropriately-sized whole house fan and matching ventilation, and then add a powered vent (PV) to the roof.  Also known as an ‘attic fan,’ the PV is controlled by a thermostat. It pulls hot trapped air out of the attic when the whole house fan is not running, and serves as a very effective outlet for hot air when the whole house fan is in operation.  When used in conjunction with a whole house fan, you have created the most efficient and effective home and attic cooling system available.  Please note that when we install a PV as part of a whole house fan system, we usually install one fewer oversized roof vent than what was initially quoted.  For example, if the whole house fan system calls for 5 oversized vents, but we also install a PV, then the number of oversize vents to be installed drops to 4.  This is a price reduction of $110.

SO MANY CHOICES!

Which system is right for your home?  Please contact us to discuss the specifics of your home and cooling needs, and also to make an appointment in our showroom to experience the fans for yourself.  Based on the information that we gather about your home and needs, we will create an initial estimate for the creation of a highly-efficient whole house fan system. Then we can schedule one appointment at your home in which our install teams (the best and most experienced in Colorado!) can both confirm the initial estimate and install the fan system of your choice.  The final price shouldn’t be higher than what is quoted in the initial estimate.  We have fan options to meet your specific needs – please call with your questions!


To start the process of creating an initial estimate for your new whole house fan system, please see our Estimate Form.

Traditional Triangle Whole House Fans by CHC

Home Size
(Square Feet above Ground)
Recommended
Fan
Max Airflow
in Cubic Feet
per Minute (cfm)

Price for Fan
(Installed)

Recommended
Total Attic Ventilation

Likely Number of
Vents Added to
Complete Fan System

Estimated
Job Total *

1,200 – 2,500 sq feet
30″
Traditional
7,600
$1,550
8-9 sq feet
net free airflow
6 – 7
$2,210 to
$2,320 *
2,000 – 3,500 sq feet
36″
Traditional
9,700
$1,650
10-12 sq feet
net free airflow
8-10
$2,530 to
$2,640 *
3,500 and more sq feet
42″
Traditional
12,600
$1,850
14-16 sq feet
net free airflow
12-14
$3,170 to
$3,280 *
* We also offer the 30″ and 36″ whole house fans with 1/2 hp motors to provide more airflow.  We have a wide variety of fans to match the needs of your unique home! 

 

QuietCool Whole House Fans by CHC

CHC carries the entire line of QuietCool fans, but we focus on the Trident Pro line because these fans provide amazing quality and the greatest value to our customers. The Trident Pro line can only be installed by a QC Authorized Dealer, and comes with a 15 year warranty and removable grille that allows for an optional R-40 insulated insert for the winter months.

Home Size
(Square Feet above Ground)
Recommended Fan
Max Airflow
in Cubic Feet
per Minute (cfm)

Price for Fan

Recommended
Total Attic Ventilation

Likely Number of
Vents Added to
Complete Fan System

Estimated
Job Total

 
QC Trident Pro 1.5X
1,500
Please Call!
2-3 sq feet net free airflow
0-2
Please Call!
 
QC Trident Pro 2.5X
2,500
Please Call!
3-4 sq feet net free airflow
0-2
Please Call!
Up to 1,100 sq feet
QC Trident Pro 3.3X
3,300
Please Call!
4-5 sq feet net free airflow
2-3
Please Call!
Up to 1,600 sq feet
QC Trident Pro 4.8X
4,428
Please Call!
5-7 sq feet net free airflow
3-5
Please Call!
Up to 1,600 sq feet
QC Trident Pro 5.5X
5,068
Please Call!
6-8 sq feet net free airflow
4-6
Please Call!
Up to 2,000 sq feet
QC Trident Pro 6.0X
5,798
Please Call!
7-8 sq feet net free airflow
5-6
Please Call!
Up to 2,333 sq ft
QC Trident Pro
7.0X
7,000
Please Call!
8-10 sq feet net free airflow
6-8
Please Call!
  • Please note that the above pricing provides a rough estimate for the installation of a whole house fan system. The actual cost may vary depending on many factors. 
  • Please call, email or fill out the online form so that we can create an initial estimate – we pride ourselves on providing an accurate and comprehensive initial estimate that is customized for your specific home and cooling needs.
  • By gathering information about your home before we arrive on-site, and first developing an initial estimate from our office, we are able to save you time and money.
  • Our pricing includes all the framing, drywall, roof and electrical work required to complete the fan installation according to the manufacturer’s specifications.
  • As the amount of additional ventilation to complete the fan system differs for each house, the above pricing serves only as a guideline for your final pricing.
  • For homes with high and vaulted ceilings, we recommend a fan that moves more than 3cfm/sf (as there is a greater volume of air in the home to be moved).
  • All of our whole house fans are installed with wall-mounted controls that include a timer and high/low switch.
  • Remote control options are available for all QuietCool fans – please inquire.
  • Oversize roof vents (each OS vent provides 1 sq foot of net free ventilation) are $110 each installed in a shallow-pitch asphalt roof.
  • We have additional charges for installing vents on steep roofs (8:12 pitch and greater).
  • We can install Soffit Vents and Vertical Exhaust Shutters to provide ventilation for homes with metal or tile roofs.
  • We have additional charges for plaster walls, lead paint containment, high and sloped ceilings, and vertical installations.
  • All known charges will be part of your initial estimate – we are up front about the entire job cost.
  • Your final pricing will be given in writing on-site prior to the start of work.
  • We stand by our work and provide a written warranty at the time of installation.
  • Pricing and technical information may change at any time.
  • Quietcool fans have a 15 year warranty, Triangle fans have a 10 year warranty.

To start the process of creating an estimate for a whole house fan system, please see our Estimate Form.

We will contact you if we need more info.  Our goal is to send you an initial estimate within 48 hours.  Thank you!

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Colorado Home Cooling 1120 N Harlan Street Lakewood CO 80214
+1 (303) 986-5764
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