Bring Denver’s Cooler Morning and Evening Air Into Your Home
Colorado homes can heat up throughout the day, even after the outdoor temperature begins to fall. A QuietCool whole-house fan gives you another way to cool and ventilate your home when the outdoor air is cooler and cleaner than the air inside.
The system pulls cooler outdoor air through a few open windows, moves it across your living areas, and pushes warmer indoor air into the attic and out through the attic vents. This creates an active indoor breeze while exchanging the warm, stale air that has collected throughout the house.
Your Cooper Green Team installs QuietCool whole-house fans for homeowners throughout Denver, the surrounding metro area, and Colorado’s Front Range. Our licensed professionals evaluate your home’s size, layout, attic access, existing ventilation, electrical system, and comfort goals before recommending a properly sized system.
With a free in-home estimate, flexible financing options, professional installation, a 1‑year labor warranty, and our 100% Satisfaction Guarantee, Cooper makes it easier to add fresh-air cooling to your home.
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Expires September 30, 2026
Create a healthier, more comfortable home for your family with cleaner indoor air.
Save $500 on qualifying whole-home air purifiers, filtration systems, or attic fan installations.
$500 OFF applies to qualifying installations of whole-home air purifiers, filtration systems, and attic fans with a total of $ 1,500 or more.
The discount must be presented at the time of booking—no cash value. No substitutions or rain checks permitted.
Valid for residential services only.
Additional terms and conditions may apply.
The offer must be scheduled by September 30th.
Contact us with any questions or to schedule your FREE in-home estimate.
Expires September 30, 2026
Get your home ready for the seasons ahead while earning extra rewards.
New Green Club 360 Members: Receive $200 Cooper Cash toward any future HVAC, plumbing, or electrical repair or upgrade.
Already a Green Club 360 Member? Receive $400 Cooper Cash toward any future HVAC, plumbing, or electrical repair or upgrade.
Valid with any Back-to-School Promotion or by itself.
Disclaimer: No substitutions or rain checks are available.
This promotion must be applied at the time of booking. It cannot be combined with other coupons or offers and has no cash value.
Some restrictions may apply. Contact us with any questions or to schedule your FREE diagnostic.
At Cooper, we provide free, in-home estimates for whole-home fan installations. After evaluating your home and considering your personal preferences, we can make the best possible recommendation. Simply call us at (720) 605-7270 or schedule a consultation online.
Once you’re happy with the estimate and fan installation plan, the next step is scheduling your installation. We make it easy to book service. All you have to do is call us or visit us online, then select your desired day and time.
On the day of your installation, our experts will show up on time to deliver 5-star service. Everyone on our Denver team comes with experience, background checks, and a positive attitude. After installing your system, your technician will give you all the information you need for a seamless operation.
We don’t just disappear after your QuietCool fan installation. Our team is dedicated to meeting customer needs, which is why we stay in touch to gather your feedback. If you think anything needs improvement, we want to know. With our 100% satisfaction guarantees, you can rest assured we’ll take care of it.
Since 1978, Your Cooper Green Team has helped Denver-area homeowners make their homes more comfortable, efficient, and reliable. Our licensed professionals understand whole-house fans, attic ventilation, electrical systems, air conditioning, heat pumps, and indoor air quality, allowing us to evaluate how the new fan will work with the rest of your home. You will receive a free in-home estimate, clear equipment recommendations, upfront pricing, professional installation, and instructions for using the system safely and effectively. Our qualifying work is protected by a 1-year labor warranty, 100% Satisfaction Guarantee, and the dependable service behind our A+ Better Business Bureau rating.
"The team is amazing. Quoted me with a reasonable price and did a great job with the installation."
—Aun K. | Colorado HomeownerThe team is amazing. Quoted me with a reasonable price and did a great job with the installation. The electricians went above and beyond to make sure everything met the codes and standards as well as safety. Bonus points: they loved playing with my dogs and even catching her, plus carrying her back into the house as she “attempted” to escape.
A whole-house fan must be sized around the home’s square footage, ceiling height, layout, desired airflow, and available attic exhaust ventilation.
The attic also needs enough vent area to release the air being moved into it. Without adequate ventilation, the fan may not perform correctly and can pressurize the attic.
The Department of Energy also recommends sealing openings between the attic and living space so attic air is not forced back into the home. Proper support, electrical work, clearances, and airflow are additional reasons whole-house fans should be professionally installed.
Combustion Appliance SafetyBecause a whole-house fan moves a large volume of air, an improperly operated or installed system may create pressure conditions that affect certain fuel-burning appliances.
Homes with atmospherically vented water heaters, furnaces, fireplaces, or other combustion equipment should be evaluated before installation. The fan should always be operated with the recommended windows open.
The Department of Energy warns that inadequate replacement air can contribute to backdrafting, particularly with combustion equipment located inside the conditioned home.
A whole-house fan is a high-airflow ventilation system that pulls cooler outdoor air through open windows and exhausts warmer indoor air through the attic vents.
Unlike central AC, it does not refrigerate or recirculate indoor air.
Open a few windows in the rooms you want to cool, turn off the AC, and turn on the QuietCool fan.
The fan draws cooler outdoor air through those windows, across the occupied rooms, and into the attic. The warmer air is then pushed outdoors through the attic vents.
Run it when the outdoor temperature is lower than the indoor temperature and outdoor air quality is good.
For many Denver-area homes, the best opportunities occur during cooler mornings, evenings, and overnight hours.
Generally, no. Turn off the AC and open the appropriate windows before operating the whole-house fan.
Running both systems at once can waste energy because the fan will exhaust conditioned indoor air.
Open a few selected windows several inches in the areas you want to cool.
QuietCool recommends avoiding too many fully opened windows because that can reduce the strength of the breeze at each opening.
Yes. Air enters through the open windows, so you can direct more airflow toward occupied rooms by opening those windows and closing windows elsewhere.
At bedtime, for example, you can leave bedroom windows partially open while closing windows in unoccupied living areas.
Thermal mass cooling refers to using cooler outdoor air to lower the temperature of the home’s interior materials, including walls, floors, ceilings, and furnishings.
When those materials begin the day cooler, the indoor temperature may rise more slowly as outdoor temperatures increase.
It may reduce AC use during suitable weather, but it cannot provide refrigerated cooling when the outdoor air is hotter than the home.
Most homeowners use AC during hot afternoons and the whole-house fan during cooler mornings and evenings.
It may reduce cooling costs if it allows you to run your air conditioner less frequently.
Actual savings depend on weather, electricity rates, fan size, operating habits, AC efficiency, home construction, and how often outdoor conditions are favorable. Savings should not be guaranteed before evaluating the home.
Yes. The warmer air pulled from the living space moves into the attic and is then exhausted through the attic vents.
This air movement can also help replace hot attic air while the fan is operating.
It can replace stale indoor air with outdoor air when outdoor air quality is good.
It is not an air purifier and should not be used when outdoor smoke, ozone, pollen, dust, or other pollution would worsen the air indoors.
No. A whole-house fan would pull smoky outdoor air into the home through open windows.
During smoke events, the EPA recommends closing windows and doors and limiting outdoor-air intake.
People who are sensitive to pollen may prefer to keep their windows closed and use filtered HVAC cooling during high-pollen conditions.
A whole-house fan brings unfiltered outdoor air through open windows unless additional window-screen filtration products are used.
A whole-house fan ventilates the occupied home through open windows and exhausts the air through the attic.
An attic fan moves air only through the attic and does not directly cool or ventilate the home’s occupied rooms.
Yes. The attic needs sufficient exhaust vent area to release the air supplied by the fan.
Insufficient venting can restrict airflow and pressurize the attic. Fan capacity and available attic ventilation should be evaluated together.
Whether or not you’re replacing an existing ceiling fan can play an important role in the final cost calculation. Ultimately, what you’ll spend installing a ceiling fan will depend on various factors discussed in this blog.
Cooper Heating & Cooling is partnering with Energy Outreach Colorado to support affordable home energy for Coloradans. From January 1 through March 31, Cooper will donate $50 for every furnace sold to help fund energy bills, furnace repairs, and energy-efficiency upgrades for income-qualified households across Colorado.
When your AC isn’t cooling down your home to the set temperature, it’s a big problem. Fortunately, most common causes have easy solutions. In this article, we’ll cover the most common causes of why ACs do not completely cool a home.
Take advantage of Denver’s cooler mornings and evenings with professionally installed fresh-air cooling.
Your Cooper Green Team installs QuietCool whole-house fans throughout Denver, Aurora, Arvada, Boulder, Broomfield, Lakewood, Littleton, Centennial, Thornton, Westminster, and nearby Colorado Front Range communities.
The Cooper Green Team is open 24 hours a day, 7 days a week.
11780 Colmans Way
Broomfield, CO 80020
