400CM (157)Universal Window Seal for Portable Air Conditioner And Tumble Dryer – Works with Every Mobile Air-Conditioning, Easy to Install - Air Exchange Guards With Zip and Adhesive Fastener

After reading tons of reviews I picked this one to help seal a window - best choice ever! Originally bought this to install a portable AC in a basement casement window. The venting tube on the AC was too thick to even feed out the window, so we ended up removing the casement and just leaving the window screen on. Now that being said, this product is AMAZING. I installed it with the help of my sister and it took minutes to install. We added some weatherproof tape all around it to really seal it, but when you put your hand to it you don’t feel any heat coming in. Pro’s: - easy to install - actually seals the window, no air can be felt coming in thru it Con: - this thing is huge! Order the smaller size. According to measurements I needed the larger size, but bought both out of paranoia. The small one is so big there was plenty of extra fabric we stuffed in the window - not the prettiest thing ever - but hey I’m not hot so who cares!

My central air conditioning failed and its going to be several weeks before the replacement arrives. I was in a pinch with the heat wave, and my apartment windows open out, not up meaning I need some way to seal them off. Luckily, I found this because it is the only way that its possible to use a portable air conditioner in my apartment. Assembly was easy enough. The video is more useful than the included documentation. Im grateful this product exists. I bought a couple so that I can just wheel the portable between rooms for now.

I rarely review products. However, I feel I owe it to the manufacturer of this product as it solved a problem no one could: installing a portable air conditioner with casement windows. I live in the Northeast in a home with no central air conditioning. That concept is foreign to me as I am originally a Floridian. However it seems people get by the summers here by leaning on a portable A/C here or there. So I thought Id give it a try rather than spend thousands on central A/C or a mini split ductless system. I was disappointed to learn portable A/C units are not designed to be used with casement windows, but rather only windows that slide up/down or left/right. After scouring the internet for a solution and not wanting to cut a hole in my wall for a vent, I found this simple and affordable solution. I was skeptical that this would create enough of a seal to truly keep warm air out and the cool air in. However, my concerns were unfounded. This thing just works. It isnt that complicated to set up (even though their instructions make it seem so). Once you place the velcro on both the perimeter of the window frame and the perimeter of the inside window of the window itself, it becomes obvious how the bag should be placed (zippers facing you). The velcro tape this comes with is impressive and does not leave any residue (at least not within a day or two), as I have even successfully removed the velcro tape from a downstairs window and re-applied it upstairs to a different room (again, after about 24-48 hours of use). Bottom line, for the price you pay this product is excellent. And no, I was not paid for this review. I paid full price for this and it was worth every penny.

I ordered this for the bedroom above the garage that is always hot during the summer. I had a portable unit from my daughters college days but thought it would be impossible to use because I have casement windows. I had been looking at other ventless AC units on Amazon when I came upon this window seal solution. It works great! I got it in the mail on Saturday and installed it on Sunday. Easy install. 10 to 15 minutes max. Got an email message from the supplier HOOMEE asking if I needed help installing it, but I had already done it before I got the message and the link to an instruction video. The printed directions that came with the seal were very self explanatory, but it did help to see the photos other reviews had posted to see it on the window. My only issue was of my own making. I did not contact HOOMEE before I ordered a size to see how exactly to determine the size you needed. I just based it on a review I saw and looked at their window size. LOVE, LOVE, LOVE this product. A inexpensive and quick fix to use a portable AC unit with casement windows. Would recommend it without hesitation. My window still closes properly with the window seal installed and it hold my exhaust tube properly when in use or not in use. It comes with ties to attach the hose to the zippers of the seal to make sure it all stays together and secure. Best $ I think I have ever spent to make my home more comfortable for guests using that bedroom.

Cant really goof it up. If youve sewn material it helps understand how the fabric flows. You can reposition if needed. The video sold this for me and the instructions are worth reading several times. My window has the crank on the frame which is different. Good thing the instructions that I followed mentioned outside opening windows and I figured out to put the sticky velcro tape on the narrow perpendicular frame along with putting it on the window frame. Is working great and really a godsend. We needed this in an exercise room in this awful heat when our air conditioner went out (for good) so we bought a mobile air conditioner. We will closing it often after using the room and it will allow the hose to pull out and close the window easily with the zipper. I dont know how it could be designed better unless an accordion type rigid custom thing was made for your window. And then more security issues. So we love it!

For years I have suffered in a hot bedroom because I couldnt find a way to vent a portable AC unit out of my Awning style windows. But now that I discovered Hoomee window kit, I have an AC unit in my bedroom and Im sleeping like its a cool fall evening even during the height of the summer heat! It took me less than 30 minutes to install and came with everything you need to get the job done. Its only been one season so I cant speak to its durability, but the zippers are quality. The material seems strong and the velcro is serious. Thank you for this wonderful product!

Horrible directions. Had to watch the video 20x. Still think it was wrong. If you live where it downpours, itll start leaking through the Velcro and soak your floor.

Easy to install once I gave it a little thought. I have a crank out window. I’ve put some pics that may help show how it works. Only thing I felt needed to be better is how to seal up around the hose itself. Three zip ties are provided and I used one threaded through the zipper pulls to hold it shut but it doesn’t seal tight and I was worried about bugs so I used the handy woman’s secret weapon - duct tape and did a sloppy job of it. I may redo that with white duct tape. All in all works great and is 1000% better than the cardboard + duct tape contraption I was using before.

This is a great idea with an interesting implementation, and with a few minor alterations to the design it would be perfect. As it is, it does a great job. First, the Velcro sides should be flipped. They send a roll of prickly side for the sticker for your window and have the soft side sewn in. While trying to run your finger over the Velcro you stick on your window frame, it is going to hurt, but if they made the soft side the side that was stuck on the window, there wouldn’t be that problem. Second, the ordering instructions say to order the closest rounded number to your window perimeter, but that will leave a small crack if your window is slightly larger than the size, so if your window perimeter is over 400cm, get the 500cm. As it sits, the edge that follows along the physical window has spots that bunch up. Which leads me to my last complaint, 100cm is WAY too big for that to be the size difference options. I needed a 425 or 450, as my window perimeter was 416cm, but getting the 500cm would have been crazy. But now I have a small section of my casement that leaks the hot air back in. I will have to make a small two sided strip to fit the difference. Over all though, this is a great solution to this problem. My summer will be nice and cool because of this product!

This took me several tries to install it properly, even with the included instructions and watching the video. Once I did get it in correctly, it works perfectly well.