USING YOUR WHOLE HOUSE FAN

Using your fan according to best practices will prolong its life and optimize your benefits

how it works

Anytime the air temperature is cooler outside than inside your home or attic, do the following:

1 Open a few windows 4-6 inches

2 Turn on your whole house fan using the switch or portable remote and timer

3 Feel the nice, cool breeze as air passes through to the attic and fresh air replaces stale, trapped air

4 Experience a complete exchange of all the air in your home in just 3-4 minutes

5 If you have proper ventilation, save energy as warm air passes right out of your attic, allowing the entire home to stay cool for hours

While some choose to benefit from a good fan in the morning and evening, because of Colorado's cool, dry climate, you can use your whole house fan and ventilation system even in the peak of the day almost year-round.  

how to use it

Timer operation: Press the button to cycle time periods. Press and hold to run indefinitely.

 

Managing intake: It is vitally important that you open enough doors and windows to support the airflow generated by the fan.   Use the ceiling grate as a reference to open windows and doors.

  1. For QuietCool fans: At least 1x the area of the grate on low and 2x on high for targetted cooling.  For general cooling, double the open areas of fans.

  2. For Triangle fans: 

  • 42" fans need 25 square feet of opening

  • 36" fans need 18 square feet of opening

  • 30" fans need 12 square feet of opening

  • 24" fans need 8 square feet of opening

Directing airflow: This can be achieved by opening specific doors and windows. If you want to direct a strong airflow through your bedroom, open windows in that room only. It is important to note that with any combination of openings, you must ensure that you have provided enough air intake.  Opening more windows will result in less of breeze per each window.

Optimizing timing of use:  For best results, you should run the fan first thing in the morning for at least 10 minutes to bring a cool breeze through the house and into the attic, flushing out heat or stale air from the night before. Then close windows, doors and the blinds on the sunny side of the home. During the day do not run the fan unless the temperature outside is cooler than the house is inside. You may want to run the fan during the day to push air out of the attic. We suggest that you direct airflow from either the basement or the shady side of the home. You will get better cooling results for the next day if you run your fan longer into the night.   Running the fan too long at night may cause you to become cold, so you want to set the timer accordingly.  Experiment with your fan and home openings to maximize both your comfort and your fan’s performance. The fan may be used in mild winter days to bring fresh air into the home or to draw odors or smoke out of the kitchen.

Fan maintenance:  Your fan has sealed bearings and should not require any maintenance besides occasionally cleaning the dust from your ceiling shutter, but preventative maintenance by our technicians can help reduce the likelihood of your fan needing service during the high season.  If you get a new roof installed on your home, make sure that the new roof provides the same amount of ventilation as your old roof.  Any reduction in ventilation will compromise the ability of your fan to move air, make the fan run louder, shorten the lifespan of the fan, and will potentially void the manufacturer's warranty.  A new roof may be a good opportunity to install uniform vents on the roof or improve your fan’s ventilation. Don’t assume your roofer will know the right ventilation for your fan. Please contact us with any questions specific to your fan during a roof replacement.

 

Please give us a call if you need anything at all.