I did a lot of research before buying a window AC. Originally, I wanted one of the U-shaped window ACs that have been popular in recent years. When they all started being recalled over mold issues last spring, I decided to go with Windmill instead because of the inverter technology. I’m so glad I did. I have the Whispertech 8k BTU and it keeps our queen size bedroom freezing cold in the summer. It’s so quiet, and it was very easy to install. I like how sleek it looks. I got a second one for our guest bedroom and in the summer when both are on and the doors are open, our entire 1200sqft apartment stays really comfortable. Electric bills were entirely reasonable and I can’t say I noticed any difference from having them. 10/10.

I bought my Windmill AC from Home Depot this summer, and it has exceeded my expectations in every way. Installation was simple, and I really appreciate the thoughtful design—(they even included a great pair of scissors to assist you with the installation!) especially the rounded edges and clean, modern look that fits perfectly with my decor.The unit cools my room quickly and evenly, and it’s impressively quiet compared to other window ACs I’ve owned. I love that it connects to Wi-Fi so I can control it from my phone, and the app is super easy to use. It’s energy efficient too, which helped keep my electric bill lower during the hottest months.Overall, the Windmill AC has been one of the best home purchases I’ve made all year—stylish, smart, and powerful. Highly recommend it to anyone looking for a reliable and quiet cooling solution! I went back and bought two more!!

I purchased a Windmill air conditioner and I’m genuinely impressed. First, the sleek, modern design instantly upgraded the look of my space. It’s also almost silent — a huge difference from my old, loud unit that used to drown out my TV. Despite the quiet performance, it cools the room incredibly well.My favorite feature by far is the app. Being able to turn on the AC before I get home — especially when I’m coming in hot and carrying groceries — is a game changer. It’s convenient, efficient, and makes a noticeable difference in comfort.Overall, I’m extremely happy with this purchase and will definitely be buying more for other rooms. Highly recommend!

I saw this AC on a news site, and thought it sounded like a great little machine. Now that I have one in my window I can report the Windmill is quiet, easy to control, and keeps my rooms nice and cool. No more roaring when the compressor kicks in. I love it!

I love my Windmill!!! Easy to install, cools great, and the internet controls are very handy.My first Windmill had a problem in summer 2025, and the Windmill support team couldn't have done a better job. They walked me through troubleshooting, and when we couldn't resolve the problem with my existing AC, they shipped me a new one.Easy to recommend Windmill!

Hands down the best AC unit I own.I have multiple window units from different brands throughout my home, and the Windmill is easily the standout. It’s the quietest unit I’ve ever used while still being extremely powerful and efficient at cooling the room quickly.The difference is noticeable the moment you turn it on, no rattling, no loud compressor noise, just consistent, strong cooling. Compared to my other units, this one feels more premium in both performance and sound.If you’re deciding between brands, this is the one I’d buy again without hesitation.

Finally, a thoughtful and well designed A/C until that doesn't sacrifice form or function. On top of it, their customer service is second to noneIf I were to offer a design suggestion, consider having a magnet in the remote so that it can stay with the unit

I have purchased 4 units for my home and an air purifier. All are aesthetically pleasing and efficient. They are quiet, sleek and keep our home comfortable! Being able to use the app before getting home has been key, as I don’t need to waste electricity keeping them on all day. I have recommended to family members and friends.

We bought two of the 12k btu units when our mini-split died and was going to cost 9-10k to replace. I was skeptical at first because the reason I went with the splits in the first place was I could not stand the sound from window units....especially since the window it would in was right next to me when I watch TV. I was pleasantly surprised that these units are better than 50% quieter than other units I had before the splits. I was very nervous going back because the splits were virtually silent but these units were great! The space we are cooling is a very large open area which contains the living room, dining room and kitchen with a ceiling that is 13 feet at the peak and these handled it like a champ!! We like our house very cool (much to the dismay of friends) but these kept up no problem and we did not see any difference in the electric bill! Highly recommend these units and the customer service was top notch!

We recently switched all of our air conditioners to Windmill. They are so quiet, you don’t even know they’re on. Even on the high setting, it is nothing compared to other units. I enjoy them and they have helped cool our older home down in the summer. We will definitely purchase other windmills in the future, if needed!