How Much Does It Cost To Install An Attic Fan?

$275

(gable mount electric fan, attic up to 2,500 sq.ft.)
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Attic Fan Costs

Attic fans are a mostly functional choice for doing ventilation. They remove hot and/or humid air from the attic space, providing for longer roof life and reduced energy load on other HVAC systems of the house.

You will find that the typical cost of a fully installed average attic fan will vary by motor rating, fan dimension, mounting type, overall finish quality, and the labor rate. There are passive-powered solutions (wind) and traditional electric-motor types.

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

Attic vent: wind powered spinning-turbine head, attic up to 800 sq.ft.

Item Unit Cost Quantity Line Cost
12" diameter vent: no motor, 1250 CFM (with high wind), galvanized steel, roof-mounted. $39 each 1 $39
+ Labor Cost $116 each 1 $116
Total Cost $155 each 1 $155

Attic fan: gable mount, louvers, attic of up to 25' x 100' = 2500 sq.ft.

Item Unit Cost Quantity Line Cost
15" diameter fan: with thermostat and wildlife screen, 115VAC, 1300 CFM, aluminum/steel. $149 each 1 $149
Humidity switch: starts fan at humidity set-point. $39 each 1 $39
Material Cost $188 each 1 $188
+ Labor Cost $87 each 1 $87
Total Cost $275 each 1 $275

Attic fan: roof mounted, dome shape; attic up to 32' x 75' = 2400 sq.ft.

Item Unit Cost Quantity Line Cost
15" diameter fan: with thermostat and wildlife screen; 115VAC, 1250 CFM; galvanized steel. $109 each 1 $109
Humidity switch: starts fan at humidity set-point. $39 each 1 $39
Material Cost $148 each 1 $148
+ Labor Cost $138 each 1 $138
Total Cost $286 each 1 $286

Attic fan: gable mount, louvers, attic of up to 32' x 50' = 1600 sq.ft.

Item Unit Cost Quantity Line Cost
14" diameter fan: with thermostat and wildlife screen, 115VAC, 1020 CFM, aluminum/steel. $165 each 1 $165
Humidity switch: starts fan at humidity set point. $39 each 1 $39
Material Cost $204 each 1 $204
+ Labor Cost $87 each 1 $87
Total Cost $291 each 1 $291

Attic fan: gable mount, louvers, attic of up to 30' x 100' = 3000 sq.ft.

Item Unit Cost Quantity Line Cost
15" diameter fan: with thermostat and wildlife screen, 115VAC, 1600 CFM, aluminum/steel. $195 each 1 $195
Humidity switch: starts fan at humidity set-point. $39 each 1 $39
Material Cost $234 each 1 $234
+ Labor Cost $87 each 1 $87
Total Cost $321 each 1 $321

Other considerations and costs

  • During summer the attic fan will help cool the building and reduce A/C operation.
  • During winter the fan will remove humidity, extending the life of the roof and attic.
  • 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.
How much does it cost to install an attic fan in your city?
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Cost by city

(gable mount electric fan, attic up to 2,500 sq.ft.)
  • New York, NY$442
  • Bronx, NY$363
  • Brooklyn, NY$303
  • Philadelphia, PA$377
  • Washington, DC$328
  • Atlanta, GA$296
  • Miami, FL$270
  • Fort Lauderdale, FL$282
  • Minneapolis, MN$331
  • Chicago, IL$386
  • Houston, TX$398
  • San Antonio, TX$267
  • Austin, TX$303
  • Denver, CO$256
  • Phoenix, AZ$270
  • Las Vegas, NV$296
  • Los Angeles, CA$333
  • San Diego, CA$303
  • San Jose, CA$366
  • Seattle, WA$268

Local costs have been calculated by accounting for labor and material cost differences across different cities. To get accurate cost estimates, indicate yours: