
Home Ventilation Systems
Ventilation plays an important part in ensuring your home cooling system works to its full potential. Without adequate ventilation, hot air accumulates and gets trapped inside your attic causing severe strain on your home cooling systems, leading to excessive use, malfunctions and costly repairs. We are Colorado's top-rated home ventilation installers, with industry-leading products and unmatched customer service since 2003!
The Department of Energy's recommendation of one square foot of net free area for every 750 cubic feet per minute of fan capacity is based on milder, low-altitude climates where the air is dense. In Colorado's dry, high-altitude climate the air is about 75% less dense than lower altitude climates, meaning the air is much thinner. Because of the difference in air density, Colorado whole house fans need about 1SQFT of net free vent area per 1,000 CFM of fan capacity to exhaust indoor air efficiently.
Many Colorado whole house fan installers don't discuss the need for additional attic ventilation, leaving your system prone to dismal performance and a variety of costly problems. If another installer says you do not need any additional ventilation with your whole house fan, ask them to back up their claim to counter manufacturer and DoE recommendations — they're either unaware of these guidelines or neglecting them on purpose!
Colorado Home Services
Home Ventilation Solutions
Colorado Home Ventilation
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Ventilating Your Home
Home ventilation is crucial in improving indoor air quality, energy efficiency, and overall home health. According to the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), your home's living area should be ventilated at a rate of 15 cubic feet per person per minute (CFM). Though many building codes require a certain amount of ventilation to pass inspection, these standards often fall short of providing the benefits of optimal home ventilation, especially in larger homes operating home cooling and heating systems.
Home Ventilation Strategies
Natural Ventilation
Natural ventilation is the uncontrolled movement of air through your home via open doors, windows, passive vents, cracks, and leaks. Natural ventilation alone is usually inadequate to properly ventilate your home.
Spot Ventilation
Spot ventilation uses smaller, mechanical fans and vents to improve air flow in specific areas of your home, such as bathrooms fans in bathrooms and exhaust fans in your kitchen. Spot ventilation does not have any whole house ventilation benefits.
Whole House Ventilation
Whole house ventilation calls for multiple mechanical fans and vents to deliver controlled, robust ventilation throughout your entire home. Whole house ventilation systems provide exceptional airflow to improve indoor air quality and promote better home cooling.
Ventilation MythBusters
Busted!
Colorado code only requires 2 net sqft of free attic ventilation. You may need as much of 5 additional sqft of roof vents to operate a whole house fan properly.
Busted!
According to the industry-leading manufacturer, whole house fans can only move as much air as it can exhaust.
Busted!
Without proper attic ventilation, hot, polluted, stale air has nowhere else to go and eventually makes it way back into your living spaces.
Busted!
Adding up the costs of repair, replacement, and energy bills, the one-time cost of adding ventilation to your home cooling system upfront is going to be a cost-saving measure for you in the long run.
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The U.S. Department of Energy recommends 2 to 4 times the normal area of attic vents for optimal whole house fan performance, and manufacturers often require additional ventilation to maintain factory warranties. DON'T LET ANYONE TELL YOU OTHERWISE!
Whole house fans are among the most energy-efficient home cooling and ventilation systems available today, capable of replacing hot, stagnant air with a fresh, cool breeze. But operating a whole house fan system without adequate ventilation greatly limits the fan's capabilities, resulting in malfunctions and disappointing performance.
QuietCool Whole House Fan
Ventilation Requirements
QuietCool, the leading manufacturer of whole house fans, also recommends having at least 1 SQFT of net free area venting for every 750 CFM provided by your system. That means if your whole house fan provides 4,700 CFM of airflow, you'll need a minimum of 6.32 square feet of net free venting to properly ventilate all the air you are pulling in. Whole house fans are designed to move a tremendous amount of air in order to replace all the hot, polluted air inside your home. Without enough ventilation to expel the air as fast as it is introduced, your whole house fan will not be capable of completing air exchanges as intended.
Regardless of the make and model of your whole house fan, the more powerful your whole house fan system is, the more ventilation will be required — it's as simple as that!
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Balanced Home Ventilation Systems
A balanced home ventilation system is essential when operating whole house fans, air conditioners and other home cooling systems. Balanced ventilation systems expel, at minimum, an equal amount of polluted air to fresh air introduced, promoting better indoor air quality and energy efficiency by reducing strain on your home cooling systems. A balanced ventilation system is created using multiple passive vents, fans or powered vents depending on the amount of airflow needed to properly ventilate your home.

Passive Vents
Passive vents provide additional ventilation 24/7, without the need for a powered motor.
Powered Vents
Powered Vents are controlled by thermostat to automatically expel air inside your attic.
Attic Fans
Attic fans release air through existing vents from inside your attic.
Trusted Ventilation Service in Colorado
Colorado Home Services is locally owned, veteran-owned, and family-operated, and has helped homeowners across the Front Range improve comfort, efficiency, and overall home performance since 2003.
Proudly serving Denver, Colorado Springs, Fort Collins, and surrounding Front Range communities.
Call (303) 986-5764 or
contact us today to get started.
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