Whole House Fan – Existing Homes

A whole house fan is high-volume fan that cools a home in the evening and early morning hours, allowing the air conditioner to be manually turned off.

How Does It Work?

A whole house fan is mounted in the attic along with a ceiling mounted shutter in a hallway. The homeowner opens sufficient windows then turns the fan on. The shutter opens and the fan pulls the warm air out of the house into the attic pushing it out of the roof or gable vents while cooling the attic. At the same time, cooler outdoor air gets drawn into the home thru the open windows.

What is The Incentive?


How Do I Qualify?

  • You must be an Idaho Power residential customer, and either a homeowner or property owner.
  • Qualifying home types are single-family site-built.
  • Your home can be a primary residence, vacation home, or rental.
  • The minimum air flow rating must be 2,000 cubic feet per minute (CFM).
  • Must be installed by a licensed contractor.
  • Qualifying home must have a central air conditioner, window air conditioner or a heat pump.
  • A maximum of one incentive per home.

How to Apply

    1. Review the Terms and Conditions, Incentive Application and the Whole House Fan Worksheet.
    2. Contact a licensed contractor and have the whole house fan installed.
    3. Complete the Incentive Application and Whole House Fan Worksheet.
    4.  Submit the completed forms together with a copy of the paid licensed contractor invoice to Idaho Power.
    5. Receive a check upon application review and approval.

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