The 7 Best slim profile Window Fans (2023 reviews)

We consider a slim profile window fan to be a worthy investment in the long run. We are here to help you choose the right one for your purposes from all the best available products in market today.

Our review process: Show/Hide

Our Top Picks:

Best Overall: Buy: Bionaire slim profile Window Fan READ REVIEW

Best For vertical slider: Buy: Holmes extender panel READ REVIEW

Best For small room: Buy: Vornado slim profile Window Fan READ REVIEW

Best With timer: Buy: Holmes slim profile Window Fan READ REVIEW

Best For sliding Window: Buy: sharper Image fresh Air READ REVIEW

Best For ventilation: Buy: Lasko slim profile Window Fan READ REVIEW

Best For Window sill: Buy: sharper Image slim profile Window Fan READ REVIEW

Best Overall: Bionaire slim profile Window Fan

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The look and feel of this fans are consistent with the high quality we're used to from the rest of Bionaire's lineup. The Bionaire pulls the more temperate air from the second floor up and has improved the floor's overall temperature by nearly five degrees. It is great for keeping you cool on those summer nights without breaking the bank on your electricity bills compared to using your ac all night long. It has a remote control, and that it has a thermometer which turns it off if it gets too cold.

This fan does a wonderful job of keeping the room cool and comfortable. It is also fairly quiet and can be set for the blades to move air either in or out without physically taking the fan out of the window and turning it around. It comes with remote control plus features including a remote. It is easy to install and use, and auto thermostast is very handy.

• Perfect to bring in outside air to a small room or exhaust stale air
• Makes a nice white noise if in a window across the room
• Works very well as an exhaust fan

Best For vertical slider: Holmes extender panel

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The Holmes twin window fan with comfort control thermostat operates quietly and efficiently by intaking fresh, cooler outdoor air and exhausting stale, warm indoor air for cooling comfort. It cools the house so nicely at night. This model has two fans, each can independently blow in or out (intake or exhaust), with independent speeds, and the controls are very straightforward and intuitive. It's also electrically reversible too, as well as each fan can be operated independatly.

This fan works very well, and is reversible without taking it out of the window. It gets very humid and muggy especially in the summer. It's relatively quiet white noise in the evening and really draws in the air to keep the bedroom fresh and cool. It is great for bathrooms with a window and no exhaust fan.

• Love the reversible option and variable speeds
• Works great without a lot of noise
• Two 6 blade fans, independent speed & directional controls & a thermostat
• Moves a lot of air and is very quiet

Best For small room: Vornado slim profile Window Fan

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The vornado slim profile window fan should be able to handle its purpose and duties with ease. The air chamber abundantly draws fresh air from the outside in your window. It helps to keep fresh air into the room. The durable, weather-resistant case blends seamlessly into the space, and the slim design preserves the view out of your window. They fit into the window with the front of the expansion block fitting over the inner ledge of the window floor. The foam blocks included to shrink the window opening to snug fit the fan are also sturdy, easy to install, and well made.

The remote comes in handy as it makes it easy to turn on and change settings without having to go up to the unit. It's very light weight and easy to carry.

• Very attractive design and easy to use controls
• There’s no issues, no weird noise, no nothing
• Attractive and quiet with handy remote
• Controls undesirable noxious exhaust, cooking, smoke etc from your home or your neighbor

Best With timer: Holmes slim profile Window Fan

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It is truly quiet, although not as quiet as some of the high-end fans. It fits in just about any window, regular or casement and even comes with some extenders for odd shapes. It has impressive airflow, and the slim design is attractive. It also has regular fan mode which will run the fan constantly.

The thermostat is to set the preferred temperature and the fan will come on automatically when the temperature rises. It does not keep air from coming in. The blades are small and don't push a lot of air around. It is super quiet, and the speed is adjustable, but the most amazing thing is that it has temperature control, so if you set it for 65 degrees, the fans turn off when the room reaches that temperature.

• You can control each individual blade by high, med and low
• Has a control panel on both sides, so that helps alot
• Temperature settings are useful, three blades, quiet

Best For sliding Window: sharper Image fresh Air

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We know from years of feedback from readers, customers and amazon sellers, what most people want in a convenient and appropriate fan. The sharper image fresh air is exactly that - it's a simple fan that hits all the right notes. It is perfect for old bathroom with no exhaust fan. The foam fillers work so-so but cutting them with a very sharp carpet knife and some white caulk worked pretty well. The fan works well and is super-quiet. The outer box is plastic. It can be used to give a measurement for how far it extends toward the screen.

The fan has foam components covered the entire length of the fan. This should not be placed over any hot surfaces such as an oven.

• Does not fit all windows without removing screen
• Economical and not an eye sore
• High quality and very easy to install
• Works great blowing in and out

Best For ventilation: Lasko slim profile Window Fan

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The Lasko twin window fan will keep you cool both day and night. It fits most windows (double-hung, casement or sliding) from 22 inches to 32 inches. The expandable panels of this fully assembled unit provide a custom fit for your window space. It can be positioned for intake or exhaust and the slim profile ensures that the outdoors is still within view.

There are two settings for fan speed, 1 and. It runs quiet and efficiently. The fan should sit in most casement windows inside the window screen with room to spare. The fan does not include options for air flow reversal other than taking it out of the window and placing it back in the window the opposite way. It can be a very quiet fan also.

• Fits in smaller windows, mostly quiet
• Easy to use, easy to install and quiet
• Delivers what they promise

Best For Window sill: sharper Image slim profile Window Fan

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Compared with other fan in this category, the sharper image slim profile window fan has a convenient design. The highest level of fan power is more quiet than the furnace fan running. It comes with three different sizes of molded foam end pieces that you can slide into the ends of the window fan to fit various widths of windows. It’s got a nice slim appearance and comes with a variety of breeze blocker blocks so it will fit any window. The controls are easy, and speed is indicated with small lights. The LED lights are bright so you can see what speed you are running.

This fan is reversible and not only lets air in, but can also exhaust air out. It is easy to use and switching from intake to exhaust is a great feature in a kitchen without other venting. It’s relatively quiet and even on the highest setting, it’s not overly loud.

• Serves to both pull air in and as an exhaust fan
• Low profile at only 8-inches tall, and a sleek look
• Perfect the air feels really good