Windmill Window Air Conditioner - Quiet & Smart. Easy Install, Voice-Enabled, Remote & App Control AC Unit - 12,000 BTU Inverter w/WhisperTech

I've lived in NYC all my life and have used many ACs over that time including those that claim to be whisper quiet. There have been none that live up to that name except for this one. It installs in minutes, like 5 minutes! So easy a caveman could do it. It looks great in the window ( see attached photo) . and once you turn it on and let it run for 5 or 10 minutes it quiets down o the point where you barely recognize it's on. I use it to cool my entire 2 bedroom apartment and love that when it is on I cannot hear it all in my bedroom which I leave the door open and use a tower fan to bring the cold air to me. At first you will hear not the typical loud humming of an average AC which never gets any loqwer, but a sort of buzzing sound. Thhis will be noticeable for about 5 or 10 minutes as the AC begins to cool the room. After this time that sound will go almost inaudible and all you will hear and very low wooshng of thefan if set at low. In fact if set at low you might not even hear the fan at all. The buzzing gets barely audible if you are in the same room and unnoticeable in other rooms. And unlike other ACS when it cycles on and off there is no noticeable big shaking of the window pane or in the walls. It just goes on, the buzzing starts and then goes away. The longer it stays on the quieter it gets. So as far as the AC is concerned , it's great. Cools 900 square in 30 minutes at high fan which i then turn down to low. Is very very quiet, and looks super clean in the window. I'd say buy this one. My only negative about this AC is the Wifi App to turn it on and off remotely. When I first installed it, it worked fine. I was able to turn the AC on or regulate the temperature when i was at work to get ready for my arrival and turn it down or off when i was out. Very handy indeed! I loved it. However it stopped working, and when i tried to re-install and reconnect , well lets just say after 5 or 6 attempts ( and I'm very tech savvy) i got frustrated and deleted it all my data. Kudos on the AC but fix the APP to make this a super special Air Conditioer

I’ve had my Windmill AC for two months and could not be happier with its ability to quickly cool my studio apartment, its quiet nature, its efficiency from an energy standpoint, the technology / smart compatibility, and customer service. The unit arrived promptly within two days after purchasing from Windmill, and being someone who supports small businesses, buying directly from the company’s store on Amazon was an added bonus to an already great product. Setting up the AC was seamless and straightforward, with concise yet detailed directions that made the installation process stress-free and quick. The ancillary items provided with the unit (insulation, adhesive foam, hardware, etc.) were great and more than enough to safely and efficiently set up the AC (and required no trips to the hardware store that were all too common with past units I have purchased). From start to finish, I was able to set up the AC unit in under an hour, and contrary to other units I’ve owned that were oversized or required an abundance of foam / installation to prevent cold air from escaping the room, the items provided were more than enough to secure the unit, insulate the room, and make the unit look great. In terms of output and performance, the Windmill AC unit exceeded my expectations from the start, quickly cooling my studio apartment that often gets very warm during the late afternoon. The fact that the air flows up from the unit, versus straight out like many other brands, enables you to cool down a room with tall ceilings or awkward dimensions (very deep room etc.). The “eco” feature is another positive that I’ve loved about Windmill as it balances energy consumption via fan speed and desired temperature to maximize efficiency. Lastly, I spoke to a Windmill representative about the “smart” setup given my disdain with technology, and he went above and beyond to ensure I could operate and monitor the unit from my smart phone – something that I would never have been able to figure out. Overall, I highly recommend this AC unit for anyone looking to have a powerful yet efficient machine and guaranteed easy installation process, not to mention the exceptional customer service and support of small business.

UPDATE 14 JUL 2025 Nearly 1 year after purchase, used approx 14 weeks combined and this unit is completely DEAD. Around 1 am this morning the unit began flashing and dropped temperature to 60⁰F. When I tried adjusting temperature, the unit turned off. Tried power button, nothing. Unplugged, replugged, tried again. Nothing. Unplugged and decided to try at 5am (when I get up for work). Nothing. For the price point, I certainly expected to get more than 3.5 months of use. INITIAL REVIEW: After 24hrs of use the manual buttons do not work. Cannot turn ac off or on. Cannot adjust temperature. Cannot adjust speed. Cannot select an alternate mode. The remote is semi-responsive: can turn on/off, cannot adjust temperature, cannot select an alternate mode, can adjust fan speed. Additionally, condensation has built up and dropped onto my floor, causing damage. This was so easy to install on my own and looks good too! I love the thoughtfulness of the vanity screen covers - which also helps to block out light. The machine certainly cools well and is very quiet.compared to my last ac. Unfortunately, not being able to customize my comfort is a huge downside.

Excellent unit. Arrived undamaged and was a snap to install. The decorative side panels make for a cleaner look than most ac units, and they even include scissors to help cut them down to size (nice touch). We have a townhouse and our hvac unit is getting old, cooling the upstairs bedroom is a chore so we added a window unit. The unit cools the room nicely and is very quiet with a nice clean look in the window. It is very energy efficient and the app allows you to control from your phone as well as view energy usage which is minimal. This is my second windmill. Very pleased and would recommend to friends.

Edit: This fall (2024) when I removed the unit for the winter, it was no longer working. So why the still high rating? I worked through the Amazon system to discuss the issue with Windmill and they asked for some photos of the unit. It showed two errors, F0 and F8. I could not find any info on what the problem might be, and when they saw these images of the errors on the unit screen, they offered a full refund or replacement. I took the refund since I won't need it again until June or July. It was all very easy. So given their handling of the situation and the quality of the unit, I will still consider another next summer. I won't do it again if it fails again, but they really did stand behind their product. Original: This AC is quite efficient and for that I love it. It's also reasonably quiet. But only reasonably. I measured it and it met the stated specs, but the reality is that even this seemingly quiet AC is pretty loud when set to full cooling (highest fan setting). Now, that's not to say it's loud, just loud when I need to be working e.g. on zoom calls. Again to be fair, those on the other end don't hear it. And in fact it may be pretty quiet commpared to other machines. It's just that I had high expectations given the ad copy. In short, I'm mostly happy with this unit, and it is almost certainly much less expensive to run (power consumption is low by many standards). The lower running cost is actually much more important to me in terms of my footprint on power consumption overall. If I can get the same cooling at a much lower power useage, why not? Hope this is helpful.

Omg I love this. Super quiet and I'm very sensitive to noise. Does a great job cooling a 300 soft bedroom

There is simply no other AC like this one on the market. Full stop. Not only does it cool a room in minutes, but it actually looks good mounted in your window. I'd say it looks more like a high-end speaker from Apple or Bose, rather than an AC, which are usually ugly and simply serve their purpose. Plus, the attachments and trim really make it feel complete in the wall. I love being able to control it via the app on my phone, so if I'm miles from home, I can turn it on and walk into an air-cool apartment. I like it so much that I bought one for my bedroom and another for the living area at the front of my condo. I highly recommend. Slick looking. Quiet. Powerful.

We bought a much-anticipated Windmill 12K BTU AC unit after much research and consideration. We were expecting an esthetic choice; a powerful unit; and a relatively silent unit (said Whisper Tech technology). After great pains in removing our previous 6+ year old dusty LG unit and installing the Windmill, and less than 24 hours later, the unit is defective and broken. It's been leaking inside (which I read could be a dangerous refrigerant leak); it's not cooling anything down any longer; it's making a terrible rattling noise, that's on par with the old dusty LG unit; and after spending over 2 hours troubleshooting, it's yielded nothing. We now have no AC in the middle of a heatwave (100F/40+ Celsius). The unit is not in stock / stock is on the other side of the country for Amazon, so we need to wait 10-12 days for a new unit (return option) or wait 14 days for a pricey return to be processed (refund option). All round, this has been a terrible customer experience: terrible product, terrible response from the seller ("nothing more we can do, you need to talk to Amazon"), terrible customer service troubleshooting, especially for a product that is pricey, cumbersome, and so fundamental to the wellbeing/health of customers.