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Bionaire 8.5" Twin Window Fan with Reversible Airflow, 3 Speeds, Remote Control

4.4 4.4 out of 5 stars 19,006 ratings
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Amazon's Choice in Household Window Fans by Jarden
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Purchase options and add-ons

Brand Jarden
Color White
Electric fan design Window Fan
Power Source plug-in - AC
Style Electronic control with LCD screen
Product Dimensions 4"D x 24"W x 12.8"H
Room Type all rooms
Special Feature Programmable
Recommended Uses For Product indoor use only
Noise Level 30 dB
Mounting Type
Window Mount
Controller Type
Remote Control, Button Control
Material
Multi
Number of Speeds
3

About this item

  • VERSATILE REVERSIBLE AIRFLOW - Multi-functional electronic blades can be set to draw in outdoor fresh air, exhaust out indoor warm air or simultaneously exchange airflow for maximum cooling efficiency
  • 3 SPEED SETTINGS - Select your optimal airflow with low, medium and high settings for a customized cooling experience
  • PROGRAMMABLE THERMOSTAT - Automatically turn the window fan on and off based on desired selected temperature setting and monitor current room temperature on an easy-to-read digital LED screen display with dimmer function
  • MADE TO FIT - Designed to fit most double hung, vertical slider and casement windows and includes a built-in accordion extender panel and an additional extender panel to ensure a secure fit ranging from 24" to 36"
  • CONVENIENT REMOTE - Control window fan from across the room with included remote control for ultimate convenience
  • READY TO USE - No assembly required, easy installation, plug-in design and 3-year limited warranty

Customer ratings by feature

Remote Control
4.1 4.1
Versatility
4.1 4.1
Temperature Control
4.1 4.1
Noise level
4.0 4.0
See all reviews

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Bionaire 8.5" Twin Window Fan with Reversible Airflow, 3 Speeds, Remote Control
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Comfort Zone Twin Window Fan with Quiet Setting, Reversible Airflow Control, 9 inch, 3-Speeds, Expandable, Exhaust, Dual Fan,
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$56.99
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Sold by Shinic Electric Appliance and ships from Amazon Fulfillment.
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Product information

Warranty & Support

See the Product Manual [PDF 151kb] Product Warranty: For warranty information about this product, please click here. [PDF ]

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Bionaire 8.5" Twin Window Fan with Reversible Airflow, 3 Speeds, Remote Control

Bionaire 8.5" Twin Window Fan with Reversible Airflow, 3 Speeds, Remote Control

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Product guides and documents

User Manual (PDF)

Product Description

Bionaire Premium Digital Twin Window Fan creates a comfortable cool and refreshing environment for your home living spaces. Features reversible 8.5" dual fan blades with independent control settings to draw in fresh air from outside, exhaust out hot air from inside, or exchange airflow simultaneously. The programmable thermostat with an easy-to-read LED screen lets you select a desired room temperature and the fan will automatically turn on and off to maintain the selected comfort level. Feel the breeze with 3 speeds settings, low, medium and high to create your optional airflow. Designed to fit most double hung and vertical slider windows and has a built-in accordion extender panel and an additional extender panel to ensure a custom fit for various sizes. Ideal for use in bedrooms, kitchens, living rooms and home offices and includes a convenient remote control to operate from across the room. No assembly required, modern light grey finish and 3-year limited warranty.

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Price-15% $55.41
List: $64.99		$45.00$56.99$99.06-30% $62.99
List: $89.99		-26% $66.70
List: $89.99
Delivery
Get it as soon as Tuesday, May 14
—
Get it as soon as Tuesday, May 14
Get it as soon as Tuesday, May 14
Get it as soon as Tuesday, May 14
—
Customer Ratings
4.44.4 out of 5 stars19,006
4.34.3 out of 5 stars58
4.34.3 out of 5 stars1,389
4.24.2 out of 5 stars4,523
4.34.3 out of 5 stars718
4.14.1 out of 5 stars2,464
Remote Control
4.1
3.8
4.1
4.1
4.2
2.3
Temperature Control
4.1
—
4.0
3.8
4.0
3.5
Noise level
4.0
—
4.0
4.3
3.9
3.9
Value for money
—
3.6
3.9
3.1
4.1
3.4
Easy to install
—
4.0
4.5
—
4.3
4.1
Sold By
Amazon.com
Newtech Products, LLC
Shinic Electric Appliance
Amazon.com
Kedielic
Amazon.com
number of speeds
3
3
3
4
3
3
material
Multi
—
Premium ABS
Plastic
—
Plastic
controller type
Remote Control, Button Control
Remote Control
Button Control
Remote Control, Touchpad Control
Button Control
Button Control
mounting type
Window Mount
Window Mount
Window Mount/Free Standing
Window Mount
Vertical slider and basement windows
Window Mount
collection
Home
—
SHINIC WINDOW FAN
—
SHINIC WINDOW FAN
Home
wattage
80 watts
—
70 watts
25 watts
80 watts
31.9 watts

Customer reviews

4.4 out of 5 stars
4.4 out of 5
19,006 global ratings

Customers say

Customers like the quality, remote control, and noise of the fan. For example, they mention it's a well made tool, runs quietly, and makes mostly whooshing sounds. That said, opinions are mixed on performance, temperature control, size.

AI-generated from the text of customer reviews

2,345 customers mention1,753 positive592 negative

Customers like the quality of the fan. They say it's a well-made tool that works well and runs quietly. Customers also mention that it lasts l long time, has no issues or failures, and does a great job of pulling cool air from the rest of the house. They also say the assembly quality is perfect and the fan doesn't need to be removed from the screen. Overall, customers are happy with the quality and functionality of the product.

"...I live alone and am not strong, so this was good for me. It cooled the room very quickly and very well - down from 80 to low 70's in about an hour...." Read more

"...This fan does a great job of pulling the cool air from the rest of the house too, as long as we leave the bedroom door open...." Read more

"...Hopefully this one lasts a long time, as I usually only get 2 years use out of other fans I've used in the past...." Read more

"...can tell you now that all of these fans are super cheaply designed and built and none of these fans are perfect, but in my opinion, one is worse..." Read more

1,728 customers mention1,216 positive512 negative

Customers like the noise level of the fan. For example, some say it's extremely quiet, while others say it makes more of a white noise. Overall, most are satisfied with the airflow and the reasonable sound level.

"This is a quality product that works well and run quietly. I highly recommend this product." Read more

"It has everything! Two powerful but fairly quiet fans really move the air, even in the lowest setting...." Read more

"...I guess it;s not quiet but I like white noise anyway so if noise is an issue for you, you should check out the guy who posted a review with the..." Read more

"...This fan works great. Extremely quiet, even at the high setting. Not that we need high, as it moves a lot of air even at the low setting...." Read more

815 customers mention688 positive127 negative

Customers like the air flow of the fan. They mention that it moves a lot of air, has enough air flow to do the job, and can pull air in and out without moving the fan, and that it circulates air well. Some say that the fan is very quiet and that the fans move an unexpectedly large volume of air for their size.

"...I had it on high with the temp on the lowest setting - the fans really blow hard so I liked that too...." Read more

"...(smaller blades) fan setup, but this larger 2 blade fan moves an impressive amount of air...." Read more

"While not to powerful, it does a good job at helping air circulation and works well as an exhausting fan.For the price I'd call it a buy." Read more

"...It's really powerful, significantly improving the airflow in my room...." Read more

798 customers mention664 positive134 negative

Customers like the remote control of the fan. They say it's handy, convenient, and game-changing. Some customers also say the remote provides for effortless operation. Overall, most are satisfied with the remote's functionality and ease of use.

"...The remote control and the full temperature controls are nice! I'm very happy with it. Its one of the best things I've ever purchased...." Read more

"...controls and remote are good, all buttons easy to use and understand...." Read more

"...I use the remote control feature a lot. It's so nice to not have to get out of bed to turn fan on/off or adjust the settings...." Read more

"...It also has a temperature setting and auto feature. It also has a remote which is very convenient...." Read more

664 customers mention530 positive134 negative

Customers like the ease of use of the fan. They say the controls are very easy to use, the remote is easy to figure out without instructions, and the instructions are reasonably complete. They also mention that the fan is simple to place in the window and that the power cord is in the lower left corner.

"...I found it very easy to install..." Read more

"...Changing the settings is easy and straightforward - pick your speed and pick your airflow direction and that's all you have to do...." Read more

"...This Holmes unit has the best placement of the power cord which is in the lower left corner... the location is high enough as not to interfere with..." Read more

"This fan is well made and easy to use. I put it in my kitchen window...." Read more

3,367 customers mention2,293 positive1,074 negative

Customers are mixed about the performance of the fan. Some mention that it works well and runs quietly, while others say that the feature is silly and almost useless. Some say that it does a good job at helping air circulation, while other say that its design does not work in their space.

"...I've had this for about 2 years now and I still love it and think it works great. I use this very often and have had no problems...." Read more

"...The motor must be stronger because I can tell that it doesn't struggle when wind is trying to blow inward...." Read more

"...the right side along the top and bottom edge of the fan, which is supremely stupid because as soon as you place the fan in your window frame and put..." Read more

"...The controls on the fan work fine just as they are...." Read more

905 customers mention613 positive292 negative

Customers are mixed about the temperature control of the fan. Some mention that it has a temperature setting and auto feature, a thermostat, three speeds, and is easy to use. However, others say that the control can be confusing, the gauge is not accurate, and the temperature settings are too narrow for the world at large.

"...I like that this unit has the temperature display too so you know how hot or cold it is in the room and you can tell if it is working or not or..." Read more

"...The remote control and the full temperature controls are nice! I'm very happy with it. Its one of the best things I've ever purchased...." Read more

"...The one thing I've noticed is that the temp gauge is not accurate to the interior of the room, but honestly it couldn't be since the gauge is part..." Read more

"...It has three fan settings and three air flow settings, plus a thermostat you can set which will either turn the fan off or on as needed...." Read more

578 customers mention349 positive229 negative

Customers are mixed about the size of the electric fan. Some mention that it fits nicely in windows with very little gappage, while others say that it does not fit their 37" window.

"...is the extra extender for the bottom of the fan, which helps it fit securely and enhances its functionality...." Read more

"...them...The cons: You can't use it sideways so it will only fit in the big windows horizontally, like in the picture...." Read more

"...During warmer weather, it easily sits in the window. Bonus is that I can then have the windows open with the screen blocked from curious kitties...." Read more

"...of 10 stars for quality, airflow, speed, noise level and the way they fit in my windows...." Read more

I love this fan. There is so many ways to use it.
5 Stars
I love this fan. There is so many ways to use it.
This fan is well made and easy to use. I put it in my kitchen window. When the humidity is not too bad and it's cool outside, I like to put the fans on exhaust. I then open one of my windows on the other end of the house a little. This works great early in the morning. One thing I wish it had a cover to put over it when turned off. This would block the air when it's hot outside and the A/C is on.
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Top reviews from the United States

Dave in SF
5.0 out of 5 stars Love the thermostat function
Reviewed in the United States on May 3, 2024
Verified Purchase
It has everything! Two powerful but fairly quiet fans really move the air, even in the lowest setting. Will blow in, out or exchange (both ways), and it has a thermostat so it’ll turn itself on or off when it hits the temperature.

My apartment is in an old, poorly insulated building, which faces south aunt can get really warm inside even on cold but sunny days. This fan keeps the place cool — sometimes too cool!

Very minor gripe is that it sometimes takes a while to turn off once the low temp is reached. This is probably to prevent it switching off and on.
2 people found this helpful
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LadyVolFan
5.0 out of 5 stars Quiet and provides Temp control
Reviewed in the United States on May 5, 2024
Verified Purchase
My room is always the hottest in the house but since putting this in my window I am able to cool down the room and the temperature is just right when hitting the hay at night. Minimal noise so you can keep it on all night if you want. I love the airflow settings, “in”, “out”, “in/out”. Love the “out” setting to remove the hot stale air and then “in” to bring in the cool outside air, “in/out” I use when the temp is where I want it and to keep the air circulating.
One person found this helpful
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Jae
5.0 out of 5 stars Powerful Fan with Handy Features
Reviewed in the United States on May 3, 2024
Verified Purchase
I've been using the Bionaire 8.5" Twin Window Fan, and so far, it's been fantastic. It's really powerful, significantly improving the airflow in my room. Although it comes with temperature control, I haven't used that feature much, so I can't comment on its effectiveness. One of the things I really appreciate is the extra extender for the bottom of the fan, which helps it fit securely and enhances its functionality. For the price, the features it offers are quite impressive. It's a great choice if you're looking for a fan that does more than just blow air.
2 people found this helpful
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Robert C
4.0 out of 5 stars Triple Comparison Review - Bionaire BW2300 - Holmes HAWF2043 - Honeywell HW-628
Reviewed in the United States on June 7, 2009
Verified Purchase
You are in luck today.

This is a direct comparison review between the three most popular currently available twin window fans:

 Bionaire BW2300 Twin Window Fan with Remote Control
Holmes HAWF2043 Twin Window Fan
Honeywell HW-628 Enviracaire Twin Window Fan

If you are interested in purchasing any of those window fans, read on...

I didn't intend to have to do this review because I didn't intend to purchase more than one of these fans. I can tell you now that all of these fans are super cheaply designed and built and none of these fans are perfect, but in my opinion, one is worse than the others.

 Holmes HAWF2043 Twin Window Fan : my rating - 3 of 5 stars

I first purchased the Holmes HAWF2043 unit. It was lightweight and fit the window nicely although I had trouble with the extender which is located on the right side. The locks for the extender are located on the right side along the top and bottom edge of the fan, which is supremely stupid because as soon as you place the fan in your window frame and put weight on it, the bottom lock locks and you can not move the extender. What rocket scientist thought of this? So you have to unlock the locks before you place the unit in the window AND keep weight off the bottom lock until you have the extender adjusted to where you want it. This maneuver is not so easy, especially at first. Plus, the lock mechanisms can be difficult to move. At the time, I could not imagine anything worse, but I was wrong as I found out with the extenders on the Honeywell unit which I will go into in the next paragraph. This Holmes unit has the best placement of the power cord which is in the lower left corner... the location is high enough as not to interfere with the bottom of the window frame. This unit has two speeds, high and low. The controls are easy to operate. In fact, there is only one button and two switches. The button cycles through the high and low manual speed settings and then though the automatic temperature presets which are at 60, 65, 70, 75 & 80 degrees fahrenheit. If you set it at one of the temperature presets, the unit will turn off once the sensor reaches that temperature. It seemed to work although I did not have the opportunity to see how accurate that function is. The two switches set the direction of the fans to either intake or exhaust which can be done on each fan independently, so you could have one fan on intake and the other on exhaust for quickly exchanging room air with fresh air. This unit has 8.5 inch fans and they are relatively quiet at both speeds - naturally high is louder than low, but don't expect silence. I own a Kill-A-Watt P3 energy meter and this unit used 46 watts on low and 63 watts on high. I would have been happy with this unit except that two days into using it, the right fan started working intermittently. Of course, that is unacceptable. Returning. I give this fan 3 out of 5 stars because I feel that if you get a good one you'll be happy with it, but don't expect anything great. FYI: Holmes is a division of Sunbeam.

 Honeywell HW-628 Enviracaire Twin Window Fan : my rating 2 of 5 stars

So with the right fan not working correctly on the Homes, I ordered the Honeywell HW-628. As soon as I saw it, I knew that I was not going to be happy with it. For one thing, the unit has 7 inch fans compared with 8.5 inch on the Holmes. So in order to move as much air, the fans would have to run much faster and the unit will be much louder. Time to install... I previously mentioned that the extenders on the Holmes were poorly designed, but the extenders on this Honeywell were MUCH worse. First of all, this unit has two shorter extenders on both the right and left sides instead of one longer extender like the Holmes has. Second, the four extender locks are, get this, located on the BACK of the unit, the side facing out the window! How are you supposed to set those? It was impossible for me. I ended up jamming the extenders into the window frame in order to keep them extended. Okay, so I finally get the unit in the window and turned it on. I found out immediately that my thoughts about the smaller fans, higher fan speed and noise were true. This thing is LOUD. Super loud. And buzzy. In fact, I'd go as far as to say that it is downright unruly. There is no chance you would use this in a bedroom even on low speed. The controls were easy to use although not completely intuitive. There are three speeds available on each fan - low, high and super high. You have to set each fan separately, which I think is stupid. I cannot imagine a scenario where I would want one fan on high and another fan on low, etc. The temperature setting dial is also extremely stupid. There are no temperature markings. According to the manual, you are supposed to keep the unit on until the room reaches a temperature that you like and then turn the dial back until the unit cycles off. Seriously? Each fan has its own direction switch for either intake or exhaust. The power cord is located on the bottom center of the front of the unit and its mounted too low so that it interferes with the bottom of my window frame. Who is designing these things? The one feature it had that I liked was that the grilles were directional and could be rotated to direct air in a 360 degree arc. On the power consumption front, this unit used twice the power as the Holmes! - 97 watts on low, 109 watts on high and 120 watts on super high. My unit was defective in that the switches for the right fan are wired incorrectly such that low is high and high is low, but super high is still super high... odd. Returning. Due to the noise level, I would not recommend this unit. I cannot understand how it has 4 of 5 stars and as of today, 262 reviews. Incomprehensible.

 Bionaire BW2300 Twin Window Fan with Remote Control : my rating 4 of 5 stars

So after the poor experience with the Honeywell (They put their name on that piece of junk? They are a defense contractor!), I purchased the Bionaire BW2300 hoping for better luck. The first thing I noticed was the similarity between this unit and the Holmes. That is because they are both made by the same company. Bionaire, like Holmes, is Sunbeam. It has the same right side extender locks as the Holmes, but after the experience with the unusable rear locks on the Honeywell, I was happy to see them! One unwelcome difference is that the power cord is located on the bottom center of the front like it is on the Honeywell, which itself is not a problem but its also too low like it is on the Honeywell. I mounted the unit in window fairly quickly and turned it on. Its got three speeds, low, medium and high. It uses 8.5 inch fans like the Holmes and it is relatively quiet, although I think it may be ever so slightly louder than the Holmes on high. The controls are all electronic and it has an electronic temperature readout and thermostat. It is very easy to use. Simply choose a fan speed and put the unit into intake, exhaust or one fan on intake and the other on exhaust (air exchange mode). You can use it either in manual mode where there is no temperature control or you can set a temperature for the unit to reach and then turn off (automatic mode). This is easy to do using the simple up and down buttons to the right of the large temperature readout or you can use the remote control. Once you set it, it will remember your settings if you turn it off as long as you don't unplug it. The remote control works well and it allows you to control all of the fan's features and functions remotely: on/off, fan speed, air direction, temperature and to toggle between automatic and manual mode. Finally, there is a button to change the brightness of the temperature readout, although you cannot completely turn it off. The power usage was similar to the Holmes. The Kill-A-Watt read 43 watts on low, 49 watts on medium and 64 watts on high. Unlike the most popular review for this unit, my temperature probe was located in its proper track and it seems to work well. I've been using it for three weeks now without issue and so this is the keeper. 4 of 5 stars for this. Its not perfect, but in my opinion, its the best of the three.

Just remember that with any window fan, one of the most important things is setting up a ventilation route.

In order for a window fan to be most effective, you have to have a second open window for either:

drawing in fresh air if you put the fan in exhaust mode.
or
exhausting room air if you put the fan in intake mode.

If you don't have a second open window for either mode, you'll either create a vacuum or pressure balloon, respectively - and either way, you'll not be moving much air which is what a fan is all about - in addition, you'll possibly be overheating and likely killing the fan's motors. The second open window can be in another room or on another floor or it could be a screen door, but you need an unobstructed, open source of fresh air with the fan on exhaust or an equally open window for air to exhaust through if you put the fan on intake mode.

Of course, you could use the fan on exchange mode where one fan pushes air in and the other exhausts, but this is not ideal as my observation is that this mode is not nearly as efficient the other two.

Also remember that the outside temperature rules everything. In my experience, in order for a fan to cool a room, the outside temperature needs to be at least ten degrees cooler than the inside temperature, and preferably falling, like it typically does at night. If the outside temperature is about the same as inside or warmer, then you'll not be cooled off by a fan. Humidity counts, too. High humidity = bad.

The window fan works well for me in the evenings/nights where the outside air temperature drops 10 or 15 degrees into the low 60s or 50s, but the inside air temperature would stay high, even with all the windows wide open as often happens without any significant wind or breeze. With the fan on and with the windows and doors set up correctly, the upstairs bedrooms stay within five or six degrees of the outside temp for me without having to turn the air conditioning on in the spring and fall. I find intake mode most effective for me. And again, remember that the effectiveness of any window fan will depend a lot on the outside temperature and humidity level.

As far as these fans are concerned, I would say either get the  Holmes HAWF2043  or the  Bionaire BW2300 , but stay far away from the  Honeywell HW-628 . Good luck!

UPDATE - June 24th, 2014:

I've had the Bionaire BW2300 for just over five years now. It's holding up quite well. I use it all the time and it works as well today after five years of use as it did when it was brand new out of the box - no problems at all. The remote control and the full temperature controls are nice! I'm very happy with it. Its one of the best things I've ever purchased.

UPDATE - April 19, 2015:

Houston, we have a problem. The flux capacitor has failed! Well, not that but after almost six years of use, I noticed that one of the two fans kept shutting itself down because it was overheating. Overheating? Huh? It was becoming too hot and tripping a protection circuit which was shutting it down until it cooled again. Sooo, what to do, what to do... Take it apart and try to fix it! (Not for the mechanically deficient)...

So the fan case comes apart with seven screws. Easy, right? But those extender locks make a repeat appearance as the design makes it virtually impossible to fully take the case apart without breaking at least one of the extender locks. Which I did. And I don't care since I don't use them. I didn't even bother reinstalling them when I was finished. But I'm getting ahead of myself... Anyway, I then removed the fan blades (single bolt) and then the motors themselves - which turn out to be made by General Electric. I first vacuumed out any dust from both sides of the motors. Then I applied a generous amount of a full synthetic 5w50 motor oil (yes, motor oil) to both sides of the motor shaft and the ball bearings. I worked it in by turning and sliding the play in the shafts and by using gravity to allow the oil to work in on both sides. I then reassembled the unit. Make sure that when you reinstall the fan blades that you key them correctly on the shaft and you may want to hand balance them a little. Also, the extender is a bit tricky to reinstall - make sure you get the end into the three grooves correctly, then extend the extender before you put the other side of the case shell on. You will need to put some support under the extended extender while doing this to keep it flat. And again, I didn't even bother reinstalling the extender locks on mine since I don't use them. So after the operation, the fan works like new again. No overheating. No shutdowns. In fact, the motor is staying very cool now. It just needed a little lube to keep the moving parts moving. You *may* be able to achieve a similar result without taking the whole fan apart by using a spray lube like WD40. But I find that WD40 is too light and it's effects are not long lasting unlike it's strong odor. The full synthetic 5w50 motor oil will work for years and there is no odor.

For me, this issue did not bother me one bit. After six years of heavy use, one should expect this sort of thing. In no way should this discourage you from buying the Bionaire BW2300. It's still one of the best purchases I ever made.

UPDATE - April 20, 2015:

After browsing some of the more recent reviews for the Bionaire BW2300, it seems that there *may* be a problem with the newer units. From what I understand, they added an inline fuse to the power cord and they may have also changed the electronics, but I'm not certain as I do not have one of the newer units. As of this date my fan is almost six years old, purchased in June, 2009, and it does not have an inline fuse on the power cord. My review reflects my experience with my fan and I do not know exactly what changes they may have made to the design since or how those changes may affect the newer units. That said, it is also possible that the spate of issues people are having recently *may* be due to user error. For instance, some of the people having issues may not be setting up an adequate ventilation route to an open window which would overheat the motors and cause shutdowns. But since I do not have one of the newer units, I cannot know what the situation is, one way or the other.
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Lilly_22
5.0 out of 5 stars Works great, very light and easy to put in
Reviewed in the United States on June 28, 2015
Verified Purchase
UPDATE May 2018: I've now had this fan for 3 and a 1/2 years and use it almost daily for 1 - 3 hours and it is still working great. I don't know what I do without it - it keeps me from having to use my A/C all the time to cool down my bedroom. Anyway, it is still working great so I still highly recommend this product. Really impressed with it. Best thing about it is how light it is - I can pick it up with one hand. UPDATE Feb 2017: I've had this for about 2 years now and I still love it and think it works great. I use this very often and have had no problems. The one thing I've noticed is that the temp gauge is not accurate to the interior of the room, but honestly it couldn't be since the gauge is part of the fan, so it is measuring right where the wind is and not the whole room. Would be a great feature for new ones to have a remote temp sensor! Anyway, for me this is not an issue since it's easy for me to look at my temp gauge and then just calculate - add 10 degrees or whatever. But I hardly ever use the temp auto off thing anyway since I just blast it for a while before bed to cool the room down and then shut it off. I use it all seasons except summer now because my place is so hot (heat is central to building) so I need to cool the room down when I get home. The fan will cool the room quickly - I can get it from 75 to 68 in about an hour usually, which is faster than my AC! Because it's so light I have also used it in the living room which is a huge open area with the dining room and kitchen and it works well in there too, even though it's a lot of space. I love this fan and would still highly recommend it. I'm buying another one for my mother today which is why I decided to come back and post an updated review.

I will start with the caveat that I've only had this a very short time (a month-ish) and have only used it about 10 times so far. I will come back at the start of winter and update this review, after I've used it for a while. I know one of the complaints with the new version is that it breaks down quickly so we'll see about that. Also, I've only needed to use it for a couple of hours before I go to bed, then I turn it off, so I don't know how it is overnight. I have a ceiling fan so after this fan cools the room, I just use that overnight. So I really have a limited view for this review, but I'll tell you what I can. The pros: It's really, really light weight-wise, which I wasn't expecting. I live alone and am not strong, so this was good for me. It cooled the room very quickly and very well - down from 80 to low 70's in about an hour. I've only used the feature that blows air in with both fans. I don't really understand how blowing in on one fan right next to blowing out on another fan would make any difference - seems to me that just blowing in as much cool air from the outside as possible would work best so that's what I did. I had it on high with the temp on the lowest setting - the fans really blow hard so I liked that too. It didn't cool the room below 70 even though the temp outside was cooler than 70, but it made it totally comfortable each time I used it. I didn't find the noise a problem - sounded like my AC unit. I guess it;s not quiet but I like white noise anyway so if noise is an issue for you, you should check out the guy who posted a review with the sound clip to see if it's too much for you. I found it very easy to install (I never have the patience to look at directions and am horribly not handy nor mechanically inclined - actually I'm so mechanically challenged that I put this thing in the window upside down at first!). I just put it in the window and plugged it in, then pushed the buttons until it did what I wanted (i.e. turned it to the coldest setting 64 degrees and high fan blowing in). I like that it is shallow enough that I can put it my window with the screen still in so I dont' have to worry about bugs or birds, etc. But maybe this is true for all of them...The cons: You can't use it sideways so it will only fit in the big windows horizontally, like in the picture. Maybe this is an unfair con but I wish I could use it the other direction so I could have it in the small window now that I have my AC unit in the big window. I did try using it on a very warm (74) and sticky night and it did not do the trick. I didn't really expect it to but it didn't in case there are people looking to use this to replace an AC unit. But there are many nights I come home and my bedroom is 80 and it's nice out and I know I could just use the fan to cool it down but I can't because of the AC unit in the big window. It's not quiet but I didn't find it terribly loud, either. But as I said I like white noise so this doesn't bother me, but it might bother others.

So far I love it. I think if it breaks down after not much usage then I would change my mind so I'll come back (if I remember...) and post another review after I've used it for a while.
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Grupo VERMA
5.0 out of 5 stars Es una excelente opción
Reviewed in Mexico on January 17, 2024
Verified Purchase
Me encanto que funciona como ventilador o extractor de aire, sus materiales son de excelente calidad y fácil de instalar.
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Pal
5.0 out of 5 stars PERFECT AND EXCEPTIONAL FAN BUT....
Reviewed in Canada on April 29, 2019
Verified Purchase
This Bionaire Twin Air is a great fan. It does everything perfectly. Better than any similar type in function and price. Just plug it in, press power, and its ready. Very easy to understand and operate at the touch of a digital button. Extremely powerful enough to bring cool air in and warm air out, or both at the same time. No need to manually rotate the fan. All three fan levels of low, med, or high range from whisper quiet to a mild hum and a very soothing sound. The temperature gage is very sensitive, accurate and a nice addition. The dimming on the numbers is very slight. The print words on the buttons are very tiny. The remote I do not need or use, but seems very good.

The fan fits my condo living and bedroom window slider tracks beautifully tight against the interior frame, allowing me to still open and close the exterior slider to expose the screen. The extenders are good, but not needed for me. The fan does not have to be moved at all. I get cold air in or smelly air out quickly. On a windy day the fans did blow in and fell on the floor twice, but still held up perfectly and very durable casing. A small piece of packing tape stuck on the fan side to window frame solved it from falling.

After 30 days this fan is exactly what is needed at a slightly higher price and worth it. A 10+++ out of 10.
I have used the other lesser price and manually turn around fans, twice, and they only last about 2-4 years. This fan is exceptionally good and exactly as described and the exact size is 24.5 x 13 x 2.25. Trusting the name Bionaire fans will last many years.

UPDATE: One fans digital control panel on/off/speed/temperature completely stopped working at almost the 1 year end warranty. Contacted Sunbeam warranty by email with amazon purchase receipt for workaround investigation and test and replacement offered, but none in stock but possible credit back, so then referred to Bionaire for same info and slow repeatative frustrating response received so far on purchase price credit. Seems willing but waiting to see, then will purchase again on amazon......HOWEVER PRICE IS NOW $50 MORE..... WHAT GIVES AMAZON..... NOT HAPPY HERE. .
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Lane E
5.0 out of 5 stars Use a transformer and it is a perfect unit!
Reviewed in Australia on March 2, 2022
Verified Purchase
You will need a step down transformer for it to work in Australia.

As a renter with limited options in a house with literally zero airflow unless there is a storm, this window fan has been a game changer! Being able to refresh the air inside has helped keep the temperature down by a couple of degrees in partnership with a portable aircon in another part of the house.

Previously, the aircon would only really stretch to the room it was in but the window fan has improved the general circulation of air, pushing the cooler air around as it does.

I have it in my kitchen window so it also acts as an extra exhaust during cooking. The exhaust setting also works well during humid days, drawing the sticky air out of the house much more effectively than I had anticipated.

Next summer, I'll get a second to use iny bedroom - the only room left suffering from the lack of air movement.
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Carlos Arce
5.0 out of 5 stars Excelente
Reviewed in Mexico on June 23, 2023
Verified Purchase
Me sorprende que funcionaran tan bien. No enfrían pero si refrescan más que un ventilador bueno, sabiéndole a qué hora y cómo acomodarles.
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L Miller
5.0 out of 5 stars does a great job of bringing cooler air into the room
Reviewed in Canada on August 14, 2018
Verified Purchase
I have a south/west-facing apartment that gets pretty hot in the summer.. I have a portable air conditioner in the dining room that helps keep the living and kitchen areas cool, but my bedroom stays hot and stagnant, especially when there's no breeze. Which is frustrating when it's actually cooler outside than in. A friend of mine recommended getting a window fan, and after googling showed that this fan is the clear winner in most of the comparisons I read, I decided to give it a try.

Sadly, it doesn't fit my slider window properly – I have older windows and there's a lip/handle on the slider window that means I can't install this fan as designed, but with a bit of angling, and some foamcore and tape to fill in the gaps, I got it secure and working. Within just an hour or so, my bedroom was cooler than my living room (which never happens).

Even on the highest setting, the fan is pretty quiet. And even on the low and medium settings, there's good airflow. The controls are easy to use and understand.

My only complaint about this unit (other than it not fitting in my window, which I won't take points off for), is that the unit I received looked like it had already been opened and returned. I could tell that the plastic bags inside the box had been opened and sloppily re-taped, the manual was crumpled, and one item wasn't even wrapped in plastic. I expected better from Amazon. I'm still giving 5 stars though, because the product itself is good.

Editing this review to update that I've bought a second unit because I was so happy with the first one. In addition to not quite fitting in my windows, because of the style of window, I also had to remove my screens to get it to fit. To compensate, I bought some heavy duty outdoor-rated velcro, taped it around the edge of the unit, and used that to attach some mosquito netting. Works perfectly.
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