Sharper Image PORTAL Window Fan with 3 Speeds, Reversible Exhaust Mode, Weather Resistant, White

A little loud but I like the way it looks. Soooo much better than the other style ones on here or at Walmart!!!

I bought this fan primarily to be an exhaust fan for my bathroom. At this time I couldn’t afford to have a traditional exhaust fan placed in the ceiling. The bathroom has a small window, so my regular twin fan where I can set one fan as exhaust and the othe as intake would not fit. This is working to my expectations. I have even used on occasion to bring fresh air in. On some of the that have gotten really hot. I found that when I kept the device in exhaust mode. The bathroom was cooler. And I have not put all of my air conditioners in the windows in my house. I was so pleased with its performance a the size along with the makers providing expanders in the event your window is large than the device. I felt really good about buying another fan. The fans I purchased are white. While I appreciate that the fan comes in white or black. I went with white initially because i purchased the first one for the bathroom. So I got the second one in the same color.

I’ve bought many window fans for the exhaust feature to use so that I can smoke indoors without the house smelling like smoke. This is the best one that I have found yet and I’ve bought all the best ones available, I even bought the newer version of this called the profile for a friends house. I think this is a little stronger for exhaust than the profile but they’re similar. I highly recommend this fan, but I know I could design one that fixes what wrong with the ones on the market now. But this is as good as it gets for now, I use two Velcro strips on top to place a fabric over it when not in use to block any cold air from outside and that works. The foam pieces stop the window from closing snugly onto the fan so you have to improvise there also.

We use this fan in our laundry/cat litter room to mitigate the smell. It has run for 3 years straight on the highest speed and is still running today. Only issue is it has become louder but still running!

I did read all reviews. And I hesitated to make this purchase simply due to cost. But I was hopeful. And knowing some negative reviews are written due to not reading directions or just to be negative I took a leap and bought 2.We need 2. We have wide open air flow in all 4 sides of the home due to being on a 100 acre grape farm. And we live on a huge lake, reviving west winds daily without fail. But we do have an older home where air flow was not considered back in the 50s. Having 2 fans to pull in cool air in the am and exhaust warm air late afternoon/evening is essential to keep the house in our comfort zone.Those $25 box fans at Walmart are excellent due to force of air movement. But they don’t fit in windows and they are beyond tolerable with noise. The $50 dual window fans are ideal as they exhaust and pull in air but not with a switch - you have to manually reverse them, they take up 2/3 of window view and allow rain to enter the home thru the vent. Yes, we can use AC but in our state, the first $100 of the bill is all the fees and the companies have elevated their pricing over 30% in last 2 years. So, we need two fans that bring in the air but also exhaust it to stay within our budget.1- These fans DO work. We can’t find anything negative to say about that. During a warm day I reversed 1 fan facing west to exhaust warm air and pull in the cool AM air. It was 82 outside, 68 inside. Very comfortable. By midday, it was warming up inside so I started the 2nd fan. It was 86 outside, 72-74 inside. Still very comfortable. In the evening as the sun set, we reversed the air flow of both fans to bring in cool air from the outside. It was 76 outside by 9pm, 68 inside. And by midnight, it was 72 outside, 65 inside.2- Noise is minimal. You can hear the fan when on. There are 2 settings - low, mid and high. At the highest level the fan is at a comfortable noise level. Can’t hear it throughout the house. Hubby likes it because it’s subtle white noise that helps him sleep.3- Installation is a beast. The installation of the foam side pieces included with the fan is the worst brain idea of any human I’ve seen in a long time. One would think a designer/manufacturer would incorporate the slide left/right shields to fill the gaps on the sides we see in other larger fans. Nope. It’s multiple sided poorly made foam pieces. And if you ever played with the toy that has shape holes and plastic shapes to fit inside - or the game Perfection - this install process takes you right back there. Inserting the fan into the window takes less than 30 seconds. Installing the foam inserts so they fit right and actually stay in place takes the better part of a half hour. And if you remove the fan completely due to a cold spell for a few days, you will dread having to reinsert it. Hubby got scolded for removing the fan I spent an hour installing. He is now ordered to put a pillow in front of the fan if he doesn’t want the cool air to enter the room.4- The cost is absurd for this unit. This is a $25 to $30 fan. Not $70plus. You are paying for the slim low sitting profile. There is no remote or Bluetooth option. We are ok with that. But given the force of air flow in and out as far as the motor is concerned, it equates to a small $20 desk fan.We aren’t sure if we are keeping. We need to give it another week or two when the summer weather is at its truest level in temperature. I should also note we bought new but received used, too. Since these do not come from an Amazon warehouse but from a private seller, shame on the seller for passing off used items as new at new cost. Just my opinion.

Perfect form factor I was looking for but unfortunately its function is broken. Like other reviewers have stated, for me the switch to reverse the fan from from blowing in to exhausting out stopped working properly.I bought the fan primarily to exhaust. Turning the fan off and then back on would always set the switch back to blowing in which was annoying but something I could deal with. After only a few weeks of use the switch to reverse the fan to exhaust would not work properly. It eventually did randomly switch to exhaust but then would never switch back to blowing in even when powering off and back on.Really wanted this to work but decided to return because of the functional issues. I'd stay away from this one until they can work out these issues.Update after messing with it more... Looks like the issue is that the mechanism to turn the fan direction back and forth is flawed and can get stuck somewhere in between so it's neither blowing or exhausting which may be why a lot are saying the fan is weak because you really can never tell if that mechanism is aligned properly just by looking at it. I was able to manually rotate the mechanism back and forth into the correct positions and the fan does blow and exhaust just fine. It's not great but considering the form factor, I think it's acceptable.All other controls work fine but pressing the fan direction switch now causes the fan speed to change which then can no longer be adjusted with the fan speed switch unless turning the power off and on again. It's a mess.My opinion is that the mechanism to switch from blow to exhaust should have been simply a manual operation instead of electrical. It just doesn't work as intended.