Whole House Fan Costs

Whole house fans are a mostly functional choice for doing ventilation. They remove hot and/or humid air from the living space and force it through the attic and its vents to the exterior. The ventilating action causes fresh outdoor air to be brought into the living space.

You will find that the typical cost of a fully installed average whole house fan will vary by motor characteristics, fan dimension, mounting type, overall finish quality, and the labor rate.

In the following tables the Labor Cost figures are what the able DIY persons should expect to save by performing the complete installation.

Whole house fan: ceiling mount, wall switch, up to 4000 sq.ft. house

ItemUnit CostQuantityLine Cost
24" diameter fan:  4600 CFM, 2 speed wall switch, ceiling grill included.$220each1$220
Attic Exhaust Louvers: automatic, aluminum, installed on gable roof ends.$143pair1$143
Timer: for 12 hour operation.$50each1$50
Material Cost$413each1$413
+ Labor Cost$149each1$149
Total Cost$562each1$562


Whole house fan: ceiling mount, pull chain switch, up to 5000 sq.ft. house

ItemUnit CostQuantityLine Cost
30" diameter fan:  6000 CFM, ceiling grill included.$358each1$358
Attic Exhaust Louvers: automatic, aluminum, installed on gable roof ends.$143pair1$143
Timer: for 12 hour operation.$50each1$50
Material Cost$551each1$551
+ Labor Cost$149each1$149
Total Cost$700each1$700


Whole house fan: ceiling mount, remote control, timer, up to 2500 sq.ft. house

ItemUnit CostQuantityLine Cost
18" diameter fans (tandem):  1600 CFM, insulated winter closure, automatic ceiling grill included.$506each1$506
Attic Exhaust Louvers: automatic, aluminum, installed on gable roof ends.$143pair1$143
Material Cost$649each1$649
+ Labor Cost$165each1$165
Total Cost$814each1$814

Other considerations and costs

  • The whole house fan generally helps to reduce summer cooling bills.
  • The operating fan breeze provides a cooling sensation of about 7ยบ F on human skin.
  • During winter the house fan generally needs to be winterized to reduce air passage.
  • Taxes and permit fees are not included in these prices.
  • The installer must have the proper electrical and mechanical installations tools.
  • The installer must work safely atop a ladder, and be able to make necessary modifications and connections to an appropriate electrical circuit that passes near the fan location. 

DIY considerations

  • Other situations that require structural modifications of the building, or more extensive installations throughout the building, or new electrical circuitry are much more appropriate for professional service.

References

  • Craftsman Estimator Costbook, complete series year 2015.
  • Latest prices found on Home Depot and other vendor Web sites.
  • Literature review of DIY Web sites.

Cost to install a whole house fan in my city

Cost to install a whole house fan varies greatly by region. To get free estimates from local contractors, please indicate yours.