Windmill 8,000 BTU Quiet Window Air Conditioner, Cools up to 250-350 sq ft

For reference, I live in a 750 sq foot, 1-bed walk-up apartment on the third floor. I could ramble on about this AC, so I chunked out my take-a-ways: Features: Sleek and Planet-Friendly. It's a far cry from the bulky window units I've had in the past — Passed down from my parents'' house and so on. The smart controls are intuitive and easy to navigate. My favorite feature is how quiet it is - We sometimes forget it's on. Coming from someone who lives in NYC with constant noise outside, it is lovely to have one less appliance that adds to it. Performance: We live in an old NYC walk-up apartment, and this AC has made the record-high summer temperatures bearable. The dual air intake feature is a nice touch. I've noticed that the air is distributed well across the room, which is always a plus. Emergy Bill: Compared to our energy bills with past units, this hasn't increased ours and seems super efficient. They have a program called EcoRewards, where you adjust your temperature at certain times (to help decrease your carbon footprint), and you get money back that you can use towards your bill. Value for $$: Excellent! Depending on what type you're looking at, it might be priced slightly higher than traditional units -- But the energy savings, sleek design, and basically silent noise level make it worth it. I'll be buying another one once our next one poops the bed. THINGS TO NOTE THAT I FOUND HELPFUL: - They offer a trade-in program where you can get $10.00 off your purchase if you recycle your old AC. In NYC, you can schedule a free pick-up for your old unit (their website has the link for this) - The company is big on environmental sustainability (love to see it), so take advantage of their EcoRewards Program. During certain times of the day, you change your AC temp by a few degrees, and the money you earn can be used towards your electric bill. The company will send you a message letting you know when and for how long to do it. Buy it! It’s perfect for people who refuse to compromise style, comfort, or eco-friendliness. They give you everything you need to install it, including scissors for cutting the window lining. They also sell great winter covers, so you don’t need to remove the unit annually. If you want an AC unit that combines style, efficiency, and noise level, this is a super solid choice.

Good AC, quiet operation BUT if you plan on using automations (programmed on off, mode choice, fan speed) DO NOT buy this AC. It took more than 25 emails with tech help to get a simple automation working. Google "windmill ac automations not working reddit." There is no guide or FAQ and the scripting just does not make sense. The automation routines available on the app are flawed. Tech was very responsive, but I got suggestions that did not work and were later contraindicated. If you just plan to turn on the AC manually or with the remote control you should not have problems. Thanks again Tech help, but really not one help request should have been necessary.

I’ve had to deal with Window units on and off over the last 40 years, some pretty new and some built in the early Sixties (they are REALLY heavy), but I will say this is the nicest I’ve used. But expectations are everything, if you think it will be a miracle machine you may be disappointed. But if you like good industrial design, care how it looks, and love the idea of controlling with your phone, I think you’ll be pretty happy with it. It was easy to unpack, easy to install (with really clear instructions), didn’t require anything not in the box to install (yes, it really does come with scissors to cut the side panels. If you think that’s ridiculous you haven’t been around people under 30 much lately), it’s powerful, and has a great App. I don’t want to pick on anyone else’s review, everyone has their own pain points and expectations, and yours may not be met: no product can be perfect for everyone. But I think it’s a good, well made, and quiet unit, that looks nice and does pretty much what they say it will. The “Inverter” that comes with the WhisperTech just means that the compressor is variable speed; unlike the old units we dealt with that only ran at full blast, this guy will speed up and slow down depending on how much cooling is needed. This can cause the unit to rattle on startup, or make noises when it’s changing speed that people aren’t used to associating with AC units and they assume it’s a flaw. It’s really just a temporary side-effect of a great feature: variable speed means it’s quieter and uses less energy just keeping your room cold than it uses to get it cold in the first place. This is a good thing. I don’t leave a lot of reviews, and this product doesn’t really need any help, it has a great star rating already. But I do see a fair number of one star, “Just don’t buy it!” reviews that are based on things like it broke after a week or the filter isn’t a HEPA filter and that makes the whole thing useless, where they are not reviewing the unit itself, but rather their disappointment that it failed in one specific thing that they hate (it doesn’t say it has a HEPA filter—you may want one but that’s not a flaw in the unit). Just read the description they gave it, and strip out all the shiny phrases and exclamation points marketing put in, and decide if the product they describe is what you want. As I said way at the top, before we all got old reading this review: it’s as good as they say it is. I think most people will enjoy it and think it was worth the money. Enjoy the rest of the reviews!

I don’t quite know where to start. From the first start up, the unit shakes so much for a brief moment when the compressor turns on that it rattles against the window loud enough to wake me from a dead sleep despite requiring 7 screws directly into your window and frame. I had to add additional support below and on the sides to stop it from shaking on startup. One of its biggest selling point, the inverter, also somehow results in the unit running so slowly that it sounds like someone is playing a bass tone on a subwoofer throughout my apartment (only noticeable to those sensitive to sounds). The front panel is warped and held on by weak magnets meaning it also rattles if not put in place JUST right. It’s super quiet other than that… The carbon filter is a joke. It takes up about 10% of the entire intake and a brief smoke test showed almost all air was pulled from around the filter. The firmware is not even currently on version 1.0 and it shows. It requires a Windmill account for any functionality (most WiFi enabled ACs do but it’s another relatively new, unproven company hoarding your data). It doesn’t maintain previous settings such as cool vs eco, set temp, or fan speed on startup. Similarly, night mode only stays on for one night at a time and is buried deep in the settings that are not intuitive to find. Why not just put the slider on the main page taken up by 50% advertisements for your local utility company? Not sure if the unit is at fault or the app is bad but it tends to hover about 5 degrees above where it’s set in app. With the app’s energy meter, you can see it actively NOT using the full capacity despite also not being anywhere close to the set temp. While the energy meter should be a cool feature, anything other than the real time readout is hilariously inaccurate with my unit using 500 watts for 3 hours straight and then reporting an average of 287 watts over that same time period. Every encounter I’ve had with this company including the app, customer service, and the unit itself shows that this is just another tech startup with too large a marketing budget. I’d never recommend this AC to anyone.

I love almost everything about this product. But unfortunately, the one thing I don't love is a big one. It's built with a defect and a large number of its units fail within a month to a year. Search "reddit windmill ac temperature stuck" and be horrified by the consistency of the warnings. I wish I had read them before buying. All I read were the glowing reviews from various consumer product websites. Within one month to a year, a demon will possess your unit. The temperature setting will light up and it will self adjust itself to 60 degrees, the lowest setting. Attempt to change it in the app, on the remote, or on the unit itself, and it will show your desired temperature for a second before laughing in your face and dialing back down to 60. And keeping the 60 lit brightly on the screen. The defect is likely caused by a failure to properly moisture-guard electronic components. It's been occurring as far back as the 2022 mfg date units. And from my experience, I know it at least persisted into the may, 2024 manufactured units. My first unit started this behavior around 20 days in. Amazon shipped me a replacement, and I had the joy of packing up the old unit and sending it back to Amazon. New unit has lasted a little more than a month and is also showing the signs of a death spiral. The temp has auto-adjusted itself twice to 60. Only way to "fix" it is to power it off for a while and hope it works later. This time, the buttons on the unit have stopped working and the unit has stopped reporting energy usage statistics to the app as well. Besides that... It's an amazing window ac unit lol. Installation was as easy as possible, controls are intuitive, app design and automations are easy to understand and useful, and the unit itself is not an eye sore. It sucks a lot of moisture out of the air and I love the way the room I have it in feels when it's on. But at the end of the day, it doesn't work. I'll probably spring for a July window ac unit because the midea u-shaped one that gets good reviews just looks so hard to install. I don't usually write reviews. But this company knows their product is defective. They would probably replace this unit if I asked them to. But what's the point? Am I going to endlessly install, uninstall, and ship back heavy equipment, just to have it happen over and over again. It's not a one off. You deserve to know before buying and being excited and then disappointed! Please, buy a different brand's unit.

Received the unit, packaging was secure and slick and install was an absolute breeze. Connecting to the network was easy (side request, would love home assistant integration so that I can build in more automations in my home). Once I turned it on I experienced an annoying rattling noise and a deep vibration that felt like my home was going to shake off the foundation. I went to contact support over the phone/chat and, unfortunately they don't have this option. Contacted support via email instead which I hate because this is normally day to day communication instead of immediate. Wowzers trousers. This customer support team is next level. I received a 4 paragraph email within minutes of my email. It was so fast I thought it was automated. It was so thorough that I am still struggling to comprehend the typing speed of the individual (Skye) that assisted me. The team went back and forth with me for quite a few emails and were unable to fix the issue. No worries! They sent me a new one, no arguing, no questions. Just help and accountability. I literally cannot ask for more from a customer service group. On this alone, Windmill AC is worth it. The product itself is beautiful (we all know that) and the interface is easy. I particularly love that the air is pushed on the sides and top, instead of from the front. This means people nearby don't get blasted with cold air, i.e. you don't have a freezing cold spot right next to the AC which I had with every other window and portable unit I've had/experienced in the past. Love this product, love this team. 100% recommend to all.

Bought 8000 btu whispertech unit to help out my 20 year old AC in the 2023 heatwave - QUICK PROS and CONS - incredibly easy install, cold air right away and cooled the whole room and partly cooled two adjacent rooms quickly (about 700 sf) BUT noisy on the low fan setting and compressor is noisy cycling on and off, louder than my 10 year old basic window AC. ==== PROS - install is amazingly simple, remove from box, slide into window, close window, pull out side screens, screw into place, snap on side screen covers (reduces heat), put provided foam in top of window (keep out bugs and blocks heat), about 30 minutes total. I did it by myself by putting in on a table in front of the window, sliding it partly over the window sill, then went outside and pulled it thru, holding the back up with one hand while pulling the window down with the other. If you're installing on an upper floor with no outside access, you will want two people on the inside, one to keep it from falling out and one to pull the window down - the outside part is long and heavy. Cools the whole room very quickly, that's where the vents pointing upward and sideways really works well. The app is great - connecting it up was simple and quick and I like the automations with one caveat (in the Cons). Also love that the front panel and filter inside are magnetic, no shuffling around trying to get them into clips, just an easy snap on. Also, the way it's packaged makes it very easy to get out of the box - cut the straps and you can lift up the sides and top, the unit is sitting on bottom, no struggling to lift it up and over the sides. I was very thankful for this. The lights go off fairly quickly (easy to read across the room) and it doesn't beep (that can be turned on in the app but is off by default). --- NOTE - if the delivery guy leaves it sideways, let it sit upright for 24 hours so that oil and refrigerant drains back into the proper places. Even if delivered upright, might be good to do that as you don't know how it was stored during the whole delivery process. --- CONS - as someone mentions in another review, it's noisy at the low fan level, that's very annoying as I'd like to have it on low fan for less noise but instead I get more noise. The compressor cycling on and off is also very noisy, more than my 10 year old basic window AC. For these two reasons, I can't put this in my bedroom (bought the Midea for the bedroom even tho the install is such a horrible mess). So it's in my dining room and another one in my living room where I usually leave them both on medium and cool. One thing to note - that while it doesn't blow on you if you're sitting in front of the unit, it does blow on you if you're across the room. I sit about 10 feet away from it on the other side of my dining room and the cold breeze falls right on me which is a little too much (that's why I wish I could set the fan to low). The automations on the app - I set it to turn on, set to cool, set fan to medium early in the morning and when I got up, it was on low and eco. I figure that because the order of the settings in the automation are: fan, mode, power, temp, it's sending the fan and mode commands and then turning on the unit, meaning it never gets the first two commands (how stupid). So I set the automation to power on, set temp, then wait one second (there's a timer option), set mode to cool, wait one second, set fan to medium and that works. There's a remote but I never use it, Buttons on the front of it are hard to read and tiny so using the app or the remote is the best choice.

I couldn’t be happier with my Windmill AC! From the moment it arrived, the setup was unbelievably easy—out of the box and cooling within minutes. The design is sleek and modern, blending right into my home without the clunky look of traditional window units. Performance-wise, it’s outstanding: whisper-quiet, powerful cooling, and the airflow feels cleaner thanks to the built-in air filter. The app control is a game-changer—I can adjust the temperature from anywhere, even before I get home, which makes it super convenient. What really stands out is the attention to detail: the packaging is eco-friendly, the installation kit is foolproof, and the customer service is top-notch. It’s clear Windmill thought about everything to make this experience seamless. If you’re considering an AC upgrade, stop searching—Windmill is worth every penny. It cools beautifully, looks great, and feels smarter than any AC I’ve owned before. Highly recommend!