Using a Whole House Fan with A/C
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Why run a whole home cooling fan with A/C?
If your air conditioner needs a boost and you're thinking about using home cooling fans, consider a whole house fan:
- When it's not very humid and the temperature drops at night, switch off the A/C and turn on a whole house fan to reduce energy costs. You'll get the benefit of breathing fresh air while your house cools.
- When the temperature is below 85 degrees F, use the whole house fan alone.
- Whole house fans vent stale air and odors that stay trapped when you use A/C alone.
- Whole house fans can circulate air between 30 and 60 ACH (air circulations per hour).
- A timer can be set for your whole house fan to come on at night, but be sure your A/C is off and windows are open.
- In the past, whole house fans were considered to be noisy. New technology has made fans quieter than ever.
- Proper installation will keep your fan quiet.
- Check your ventilation design to be sure that you have enough attic vents for air to escape and enough open windows to replace exhausted air.
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