6 Best Window Exhaust Fans of 2026
We compared six window exhaust fans on airflow, fit and build.
By Daniel Brooks
Updated October 28, 2026
A window exhaust fan pushes heat, smoke, steam and odors straight outside. Our list of the best window exhaust fans compares six models, from a low-profile Vornado and slim vertical slider fans to a 20 inch whole-house fan, on airflow, fit and build.
To browse every model we cover, visit our Window Fans page.
All Products Compared
| Product | Best For | Type | Speeds | Airflow | Fit | Controls |
|---|---|---|---|---|---|---|
| Vornado Portal Window Fan | Overall | Low-profile horizontal | 3 | Intake, exhaust (touch) | 24 to 38 inch windows | Touch |
| PANO-MOUNTS Dual-Mode Vertical Window Fan | Tall sliders | Vertical, 6 fans | Variable (0 to 2600 RPM) | Exhaust, intake | 36.61 to 66.93 inches | Knob |
| Air King 9166 20-Inch Whole House Window Fan | Whole house | 20 inch whole house | 3 | Circulation, exhaust | Large windows | Manual |
| AMCHIXIN Vertical Window Exhaust Fan | Smoky rooms | Vertical slim | Variable | Exhaust only | Frame height sized | Variable |
| MOUEEY Vertical Window Exhaust Fan | Sliding windows | Vertical slim | Adjustable | Exhaust only | 29.13 to 33.86 inches | Adjustable |
| Amazon Basics 2-Speed Twin Window Fan | Budget | Twin 9 inch | 2 | Intake or exhaust | 25 to 32 inches | Manual |
| Award | Product | WikiCooling Score About WikiCooling ScoreThe WikiCooling Score is our own rating from 0 to 10, based on the criteria described on our How We Review page. It reflects research, not laboratory measurement, and is never influenced by manufacturers, retailers, or affiliate commissions. Learn more › | |
|---|---|---|---|
| Best Value |
Vornado Portal Window Fan
|
Buy | |
| Best Premium |
PANO-MOUNTS Dual-Mode Vertical Window Fan
|
Buy | |
Air King 9166 20-Inch Whole House Window Fan
|
Buy | ||
| Best Budget |
AMCHIXIN Vertical Window Exhaust Fan
|
Buy | |
MOUEEY Vertical Window Exhaust Fan
|
Buy | ||
| Best Overall |
Amazon Basics 2-Speed Twin Window Fan
|
Buy |
Top 3 Window Exhaust Fans Reviewed
#1 Vornado Portal Window Fan: Best Overall
Why We Picked It
Vornado’s Portal is a weather-resistant, low-profile window fan with three speeds and touch-switch reversible exhaust, fitting windows 24 to 38 inches wide.
The Portal is Vornado’s entry window fan. A single touch switches it between pulling cool outdoor air in and pushing stale indoor air out, which makes it a strong exhaust fan for a kitchen window. Three speeds adjust the airflow, and the weather-resistant design handles light rain. A modular block system fits single- and double-hung windows from 24 to 38 inches wide with at least an 8 inch tall opening. It weighs 6.9 pounds.
Key Specifications
- Speeds: 3
- Airflow: Reversible intake and exhaust
- Fit: Windows 24 to 38 inches wide, 8 inch opening
- Case: Weather resistant
- Install: Modular block system
- Weight: 6.9 pounds
| Pros | Cons |
|---|---|
|
|
Things to Consider
Like the other Vornado window fans, it is built for hung windows. Its weather-resistant case means you can leave it in place through a light shower instead of pulling it out every evening.
Best For
This window fan is best for kitchens and living rooms.
Check the current price and availability of the Vornado Portal Window Fan on Amazon.
Read our full Vornado Portal Window Fan review.
#2 PANO-MOUNTS Dual-Mode Vertical Window Fan: Best for Tall Sliding Windows
Why We Picked It
PANO-MOUNTS’ tall vertical fan uses six fans with variable speed and switches between exhaust and intake, for sliding windows 36.61 to 66.93 inches tall.
This is the most capable vertical fan here. Six fans with speed control from 0 to 2600 RPM move far more air than single-fan slim units, and a switch toggles between exhaust and intake. It fits sliding windows with a frame height from 36.61 to 66.93 inches and hugs the frame so the window still opens and closes. Use it to clear smoke, cut humidity in a basement or improve circulation. It weighs 9.1 pounds.
Key Specifications
- Fans: Six
- Speed: Variable, 0 to 2600 RPM
- Modes: Exhaust and intake
- Fit: Frame height 36.61 to 66.93 inches
- Controls: Bottom knob and switch
- Weight: 9.1 pounds
| Pros | Cons |
|---|---|
|
|
Things to Consider
It suits tall sliding windows; shorter frames need a smaller unit. Six small fans spread airflow along the full height of the window rather than concentrating it in one spot.
Best For
This window fan is best for tall sliding windows and basements.
Check the current price and availability of the PANO-MOUNTS Dual-Mode Vertical Window Fan on Amazon.
#3 Air King 9166 20-Inch Whole House Window Fan: Best Whole-House
Why We Picked It
Air King’s 9166 is a 20 inch, 1/6 HP whole house window fan with steel blades, three speeds and a storm guard that lets you close the window behind it.
This Air King is a different class of window fan: a 20 inch, 1/6 HP unit powerful enough to move air through an entire home or office. Powder-coated steel blades and grille sit in an ABS body, and the permanently lubricated motor needs little to no maintenance. Three speeds handle circulation and exhaust, and the Storm Guard feature lets you close the window behind the fan in bad weather. It weighs 33.5 pounds and carries a 1-year limited warranty.
Key Specifications
- Blade: 20 inch, powder-coated steel
- Motor: 1/6 HP, permanently lubricated
- Speeds: 3
- Use: Circulation and exhaust
- Feature: Storm Guard
- Weight: 33.5 pounds
| Pros | Cons |
|---|---|
|
|
Things to Consider
It needs a large, sturdy window opening and is much louder than a twin fan.
Best For
This window fan is best for whole-house exhaust.
Check the current price and availability of the Air King 9166 20-Inch Whole House Window Fan on Amazon.
Other Models Worth Considering
AMCHIXIN Vertical Window Exhaust Fan. AMCHIXIN’s exhaust-only vertical fan installs in 30 seconds without tools.
MOUEEY Vertical Window Exhaust Fan. MOUEEY’s single-way vertical fan uses a quiet brushless motor and spring clamp.
Amazon Basics 2-Speed Twin Window Fan. Amazon Basics’ 2-speed twin fan is a low-cost reversible pick.
What to Expect from Window Exhaust Fans
A window fan sits in an open window and moves outdoor air in, indoor air out, or both. Pulling in cool evening air and pushing out the day’s heat can drop a room’s temperature noticeably without air conditioning, and running one fan in exhaust while another window stays open draws a breeze through the whole house.
For more options, see our guides to window fans for kitchens and vertical window fans for sliding windows. For floor or window use in one room, our box fans page is another option. The product cards show the current price for each fan.
How to Choose Window Exhaust Fans
Use Exhaust in the Kitchen
In a kitchen, set the fan to exhaust while you cook so smoke, steam and odors leave instead of spreading through the house, and crack another window for replacement air.
Measure Your Window First
Measure the width of the opening for a double-hung window, or the height of the frame for a sliding window. Twin fans use expanders that cover a set range, low-profile fans use blocks, and vertical slider fans are sold in fixed height ranges. A fan that does not fit leaves gaps that let air and bugs in.
Pick the Right Style for Sliding Windows
Twin fans can stand vertically in a slider, but slim vertical fans clamp into the track and leave the window usable. They move less air, but they fit where a twin fan would leave big gaps.
Plan for Rain and Security
Bring the fan in or close the window during storms unless it is listed as weather resistant. A window fan also leaves the window open, so use a window lock or stop where security matters.
How We Evaluate Window Exhaust Fans
We rank window fans on manufacturer specifications and listing details: fan type, speeds, airflow modes, window fit, controls, noise and build. We kept only new, in-stock window fans and left out renewed listings, resold third-party copies, box fans and solar vents. For this list we weighed exhaust capability, fit and build first.
Frequently Asked Questions
Should a window fan blow in or out?
Blow in when outdoor air is cooler, and out to remove heat, smoke or odors. With two windows, one fan in and one out creates a cross breeze.
What is a whole house window fan?
A large, powerful window fan that moves enough air to pull cool air through every open window in the house, usually set to exhaust.
Can I leave a window fan in when it rains?
Only if it is weather resistant. Most models should come out or the window should close in heavy rain.
Do window fans work in sliding windows?
Many twin fans can stand vertically in a slider. Slim vertical fans are made specifically for sliding window tracks.
Final Verdict
The Vornado Portal Window Fan is the best window exhaust fan for hung windows, weather resistant with easy reversing. For tall sliders, choose the PANO-MOUNTS Dual-Mode Vertical Window Fan, and to exhaust a whole house, the Air King 9166 20-Inch Whole House Window Fan.
About the author
Daniel Brooks is a home cooling editor at WikiCooling, covering window, portable, through-the-wall and mini-split air conditioners, fans, and dehumidifiers. He researches cooling capacity, energy efficiency, noise levels, installation requirements, and buyer feedback to help homeowners choose the right unit for their room size, climate, and budget.