Ultra-quiet VentCool Whole House Fans (WHF) cool naturally by replacing hot indoor air with cool outdoor air. VentCool fans use about one tenth the electricity of a typical air conditioner and reduce utility costs. Not only do VentCool whole house fans uses less energy than traditional air conditioning and reduces overall energy costs, VentCool fans provide a reliable source for clean, fresh air ventilation throughout the home.
Our VentCool free-cooling whole house fans are available in three series: Tahoe, Summit and Vista. All series feature models in a range of sizes and configurations.
Tahoe Series Whole House Fans are high performance, energy saving residential cooling systems.
A VentCool whole house fan or attic fan is the ultimate in simplicity. They are quiet, powerful, and efficient. We offer a simple range of sizes and configurations. Select the appropriate VentCool whole house fan system for any home.
The Department of Energy reports that whole house fans and attic fans are the most cost effective way to cool your home. Many state and local codes provide energy credits, discounts, or other incentives for whole house fans. VentCool models qualify for California’s Title 24 Energy Credits. Homeowners take note: VentCool fans are on the HERO list of eligible energy savings products.
All VentCool Whole House Fans come complete and are installed from inside the attic. Plus, they are designed to fit between the joists to ease installation. There is no need to cut joists when installing the damper box since they all fit 16” on center. Installation is simple. Contractors and builders will find installation is fast so there is less time spent on the job site. Homeowners who are handy do-it-yourselfers can easily install a VentCool attic fan themselves.
To select a VentCool Whole House Fan follow these four steps :
STEP 1: Choose Series Features
Choose the VentCool series based on the features you want like type of motor and damper.
STEP 2: Size The Fan
The fan CFM capacity is related to the square feet of the home. Note: When the square feet of home is between
fan CFM capacity, select the next larger fan CFM capacity.
For effective free cooling the CFM of the fan should be equal to the square feet of the home.
Minimum Fan CFM = Floor Area (Sq Ft) x 1
For faster free cooling the CFM of the fan should be equal to two times the square feet of the home.
Minimum Fan CFM = Floor Area (Sq Ft) x 2
STEP 3: Exhaust Requirement
Per Title 24 guidelines, make sure there is one square foot of NFVA (Net Free Vent Area) per 500 CFM fan capacity.
Determine NFVA: Fan CFM ÷ 500 = NFVA required
After determining the minimum NFVA needed, the existing vents in your attic will need to be measured to verify you have enough venting. Count and measure each type of attic vent and multiply by the reduction factor. This will determine the actual NFVA needed in your attic. Note: Louvered vents have a .75 reduction factor.
STEP 4: Intake Air Requirement
For peak fan operation, an adequate amount of air must be supplied through open screened windows and doors.
Determine Air Intake: Sq Ft Intake = Fan CFM ÷ 250
Have Questions? Call our Tech Support team and they can help you size the right VentCool Whole House Fan to suit your needs. Call 800-742-VENT (8368), 8am — 5pm EST.
|VentCool Tahoe Series with Airloc™ Gravity Damper Models
Fan Air Flow (CFM)
|HVI-916 std. Title 24 CFM||Wattage||
Efficiency @ High (CFM/Watts)
|Sound Level (dBA)||Speed Settings||Voltage||Acoustic Silencer Duct
||Rough Opening (inches)||Grille Dimensions (inches)||Damper Blade R-Value||Attic Venting* (sq. ft.)||
Open Window† (sq. ft.)
|VentCool-T1||2,136||-- 1,772||208||8.5||52||1||120v||16" x 7'||22.5 x 22.5||24.5 x 24.5||R-5||3.5||7.1|
||2,604||2,145||2,191||279||7.9||54||2||120v||16" x 7'||14.25 x 22.25||16 x 24||R-5||4.4||10.4|
|VentCool-T3||3,418||2,628||3,009||341||8.8||53||2||120v||18" x 7'||14.25 x 22.25||16 x 24||R-5||6.1||12.0|
|VentCool-T4||4,740||2,996||3,750||667||5.6||56||2||120v||20" x 7'||14.25 x 30.25||16 x 32||R-5||7.5||15.0|
|VentCool-T5||5,614||3,461||4,476||781||5.7||59||2||120v||20" x 7'||14.25 x 30.25||16 x 32||R-5||9.0||17.9|
|VentCool-T6||6,145||4,120||5,400||857||6.3||60||3||120v||(2) 16" x 7'||14.25 x 36.25||16 x 38||R-5||10.8||21.6|