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How Much Does a Whole-House Fan Cost? [2025 Data]
Normal Range: $900 - $2,400
Heating and air conditioning service costs depend on your project and location. Check with a local pro for your specific job.
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Cost Insights
Labor costs $300 to $1,000, but you may need to hire additional professionals, such as a roofer to add roof ventilation ($300 to $650).
The size of the home affects the cost, with a whole-house fan for a 1,500-square-foot house costing around $800 to $1,800.
The type of motor in the fan will impact the cost, with belt-drive fans ranging from $500 to $1,000 and direct-drive fans costing between $350 and $900.
Installing a whole-house fan costs between $900 and $2,400 on average for materials and labor, and people in an average-sized home commonly spend $1,700. As long as you don't live in a humid climate where the air feels sticky before you've even walked outside, a whole-house fan is a cost-effective way to cool your home. Let's take a look at what contributes to whole-house fan prices, from the type of fan to how much power you need to get air flowing.
Whole-House Fan Cost Breakdown
A whole-house fan—sometimes called an exhaust fan—typically sits in your attic, creating negative pressure by pushing hot air out through attic vents. With your windows open, that negative pressure pulls fresh, cool air in from the outside to cool your living space.
Let's look at some whole-house fan cost factors and how they affect the total installation cost.
Fan Type
While most whole-house fans mount directly on the floor of your attic, you can make alterations depending on the size of your attic and the slope of your roof.
| Type of Fan | Description | Average Cost |
|---|---|---|
| Direct Mounted | Sits on the floor of attic between ceiling joists | $1,700 |
| Ducted | Requires 6 feet of ductwork, higher maintenance costs | $2,000 |
| Roof Mounted | Good for homes with flat and low-pitched roofs | $2,000 |
| Wall Mounted | Sits inside the wall, good choice if you can’t install roof-mounted fan | $1,600 |
House Size
According to the Department of Energy, a whole-house fan should exchange the air in your home 15 to 23 times every hour, or once every two to four minutes. For this reason, whole-house fans come with CFM ratings—or the cubic feet per minute they exchange air.
When you're shopping for a whole-house fan, you'll choose a fan based on its CFM rating. On a basic level, the CFM relates to the square footage of your home, though professionals will use a more complex equation involving the height of your ceilings and a fan's intended air exchange capacity.
You want your CFM to be able to handle your entire home’s square footage.
| Home Size (in Square Feet) | CFM Rating | Average Cost |
|---|---|---|
| 1,500 | 6,000 | $800–$1,800 |
| 2,000 | 8,000 | $900–$2,000 |
| 2,500 | 10,000 | $1,000–$2,200 |
| 3,000 | 12,000 | $1,100–$2,400 |
Fan Size
Take things a step further by understanding the different diameters of your whole-house fan. As you can imagine, the fan’s diameter plays a large role in its CFM, and therefore its price.
| Fan Diameter | Average Cost |
|---|---|
| 20 inches (around 4,000 CFM) | $600–$1,500 |
| 30 inches (around 6,000 CFM) | $800–$1,800 |
| 36 inches (around 7,000 CFM) | $900–$2,000 |
It’s usually more accurate to price out your whole-house fan based on CFM rather than diameter, but depending on where you’re installing the fan, your diameter might be limited.
Motor Type
Whole-house fans come with either belt-drive or direct-drive motors.
| Motor Type | Description | Average Cost |
|---|---|---|
| Belt drive | Quieter, costs more in utilities | $500–$1,000 |
| Direct drive | Louder, more affordable overall | $350–$900 |
Belt-drive motors cost between $500 and $1,000 for materials. Direct-drive motors cost between $350 and $900 for materials and often cost less to run and maintain.
Labor
Installing a whole-house fan costs between $300 and $1,000 in labor costs, or $50 to $100 per hour. Labor includes more than installing the fan itself, however. You may pay more for related construction costs to customize the fan to your home, or to have an electrician wire in the unit for you.
For example, roof ventilation installation costs between $300 and $650—an integral part of the whole-house fan system. Lastly, if you choose to install a direct-mount fan, which is a fan that sits on the floor of your attic, a local carpenter may need to move floor and ceiling joints below the fan for installation. Carpenters charge an average of $50 to $100 per hour.
Permits and Inspections
The cost of construction permits for electrical projects ranges from $10 to $500, depending on your location. In some areas, major changes to your HVAC system require permits that cost between $250 and $400. Generally speaking, your permit cost should be relatively low for a whole-house fan, though, sitting somewhere around $50.
Additional Costs to Consider
Installing a whole-house fan may affect the surrounding structural elements of your home, so you may pay extra for hiring related contractors. There are also several add-ons to make your fan run more smoothly.
| Add-On | Average Cost |
|---|---|
| Variable-speed fan | $3,600 |
| Fan shutters | $40–$200 |
| Attic fan cover | $30–$85 |
| Insulation | $20–$30 per roll |
| Roof vent | $300–$650 per vent |
| Electrical wiring | $50–$100 an hour |
| Drywall repairs | $60–$90 per drywall panel |
Why You Should Hire a Whole House Fan Installation Pro
Some house fan models are more complicated than others, often involving roofing and electrical work. Therefore, whole house fans should always be installed by a trained pro. Overall, pros charge between $50 to $100 per hour for labor, or $300 to $1,000 for a whole house installation.
Here’s why it’s ideal to hire a whole house fan installation pro
It’s best to entrust a house fan installation pro for the job because of the challenges that come with the process:
Location: Fans must be placed at the proper locations to ensure the best energy efficiency and performance.
Risks with installation: Working on a tall ladder and interacting with electrical wiring all bring risks best left for a licensed and insured pro, instead of a homeowner.
Model: Some models of house fans are harder to install than others.
Fan size: A pro will know what fan size works best for each room.
Add-ons: A pro can also take care of additional work or add-on features, such as insulating the roof or installing a roof vent.
Tips to Save Money on Whole-House Fan Costs
You'll instantly save money by choosing to install a whole-house fan over installing a central AC unit, which costs between $3,900 and $7,900. Still, whole house fans can get expensive, so use the tips below to lower the costs of whole-house fan installation.
Work with an electrician familiar with installing whole-house fans in your area and your home design.
Whenever possible, work with existing vent work and the structure of your home. Adding vents or moving ceiling joists will add to the final cost.
Opt for a direct-drive model to save on upfront costs and ongoing maintenance costs, as long as you don’t mind a louder fan.
Choose the proper CFM rating for your home—too large a fan will waste energy and upfront costs and too small a fan will require you to run the fan for longer to keep your home cool.
Opt for a simple single-speed whole-house fan without additional settings.
Next Steps: Finalize Your Project With a Pro
Compare pricing between belt drive and direct-driven models.
Ask if the pros can work with any existing ductwork.
Determine what type of fan works the most for your home
Request add-on services, such as a fan cover or additional roof and attic insulation
Schedule your service and see if you need to move anything out of the way beforehand.
How Angi Gets Its Cost Data
Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We extensively research project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We rely on reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects.
Want to help us improve our cost data? Send us a recent project quote to [email protected]. Quotes and personal information will not be shared publicly.
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