Windmill8,000 BTU Inverter Window Air Conditioner - Ultra-Quiet & Smart, Cools up to 350 Sq. Ft. - Easy Install, Voice-Enabled, Remote & App Control, Energy-Efficient AC Unit - with WhisperTech

The media could not be loaded. 1st bought the 8,000 BTU whisper tech for our bedroom last summer and we love this a/c so much that hubby and I got the 10,000 BTU whisper tech version for our living room! In comparison to the older a/c units we had in our apartment (3 a/c’s were graciously left behind when we bought our apartment), windmill whisper tech is very soft and quiet—even on the highest fan settings and on cool mode. I love being able to turn on both a/c’s remotely through their app a few hours before coming home and to enter into a significantly cooler apartment after a hot NYC summer day. I also truly enjoy the sleek design and the 45* upward fan that helps to make the room feel cooler faster rather than a standard a/c blasting just one area and that area being very cold.Installation is very intuitive and easy with all the tools you need to make it a breeze (including a nice pair of scissors for the sleek side panels)! Especially after setting up our first one, it takes about 20-30 minutes to set up and use right away—if you need to install a/c brackets, add some more time. If you able to splurge the extra money for the whisper tech a/c’s—especially if people are sleeping where this a/c will be—it is very worth it!I have observed that the set temperature may be slightly off from the actual output or readings in the room (ex: a/c temps are set to 68*, it says that the room temp is 74* but external temp reader reads the room at 76*). This is not a huge deal breaker for me as long as the apartment feels and is under 80* but it may be something to keep an eye on over time.Overall a very solid unit and looks sleek and works very well for me and my hubby’s needs. He is a light sleeper compared to me and is sound asleep while running this a/c!

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!

Windmill Window AC Unit Review: A Disappointing LetdownI had high hopes for the Windmill Window AC unit when I picked it up as a replacement for my trusty Midea U-shaped window unit (which I gifted to a friend in need). Drawn in by its sleek aesthetics and promise of efficient cooling for my 250-square-foot bedroom, I was ready for a worthy upgrade. Unfortunately, after extensive use, I can confidently say this unit falls far short of expectations. From a flawed temperature sensor to excessive noise and a laughable "Eco" mode, this AC has left me frustrated and regretting my purchase.Let’s start with the biggest issue: the temperature sensor. This unit struggles to accurately detect the room’s temperature, and I’ve confirmed this with multiple independent sensors placed both near and far from the unit. Consistently, they read 5-8 degrees higher than the AC’s set point. This isn’t a matter of insufficient cooling power—the air blowing out is ice-cold and refreshing—but rather a fundamental design flaw. After digging into the unit’s construction, I pinpointed the problem: the sensor’s placement is a disaster. It’s affixed right next to the evaporator coil, the coldest part of the AC, where incoming air is sucked through. This means the sensor is constantly bathed in frigid air that doesn’t reflect the actual room temperature. As a result, the unit misreads the room as much cooler than it is and shuts off prematurely, leaving me sweaty while it smugly assumes its job is done. There’s no DIY fix for this—it’s a baked-in flaw that undermines the entire system.This poor sensor placement doesn’t just mean an uncomfortable room; it also leads to constant cycling. The AC turns off too early, then kicks back on when it finally realizes the room isn’t cool enough. This on-off dance increases energy usage and creates more noise—two things no one wants from an AC unit. Speaking of noise, let’s talk about that next. Compared to my old Midea U-shaped unit (same 10,000 BTU capacity), which was whisper-quiet on low settings and pleasantly soft even at max power, the Windmill is a letdown. You can hear the compressor rumble to life with every startup, and the fan noise is choppy and grating, likely due to friction with the grill. Worse still, its traditional box shape offers zero sound insulation from outside noise—it’s like having an open window. My Midea, with its U-shaped design, kept the window itself as a barrier, muffling street sounds effectively. With the Windmill, every car horn and barking dog comes right through.Then there’s the so-called "Eco" mode, which is honestly a joke. All it does is turn off the compressor and cycle the fan every 20 minutes or so to check the temperature—except, of course, it relies on that same terrible sensor. In normal cooling mode, air is at least drawn over the sensor from the room, giving it a fighting chance. In Eco mode, with no active airflow, the sensor sits next to the cold coil for ages, reporting absurdly low temperatures (like 58°F) while my own sensors clock the room at 70°F. The result? The AC stays off far longer than it should, letting the room heat up while it pats itself on the back for “efficiency.” It’s a feature that sounds good on paper but fails miserably in practice.Adding insult to injury, the unit comes with carbon “filters,” but they’re a complete letdown. As you can see from the image, they’re a tiny fraction of the size of the dust filter; and they’re made of low-quality carbon-coated fiber, not even real carbon pellets that would actually trap odors or impurities effectively. To top it off, Windmill sells 3-packs of these flimsy filters for $45 on their website. That’s right—$50 for what feels like a marketing gimmick masquerading as a feature. It’s a joke, especially when you consider the minimal air purification they offer and the outrageous markup on such a subpar product.To make matters worse, I tried reaching out to Windmill about this last year. I emailed them suggesting they add a temperature offset feature to their otherwise solid app (which, I’ll admit, is sleek and user-friendly). Here’s the deal: the sensor often reads the room as cooler than it really is—like showing 60°F when the actual room temperature is 70°F because it’s too close to the cold coil. If I set the AC to 65°F, it thinks the room’s already at 60°F, below my set point, so it stays off—leaving me hot. An offset would let me tell the AC to treat its 60°F reading as 70°F. Then, when I set it to 65°F, it would see 70°F, realize that’s too warm, and start cooling. It’s a straightforward software tweak to fix their hardware mistake, but all I got back was a vague “We’ll pass it along to our team.” A year later, there’s no update, no offset, nothing—just silence. It’s frustrating they’d ignore such an obvious fix.In short, the Windmill Window AC unit is a stylish shell hiding a poorly executed core. The aesthetics that lured me in can’t make up for its inability to cool effectively, its noisy operation, or its energy-wasting quirks. If you’re looking for a reliable, quiet, and smart window unit, look elsewhere—my old Midea was proof that better options exist. I’m disappointed I traded up for this, and I can’t recommend it to anyone who values performance over looks. I plan to somehow sell this unit and buy another Midea. Do not make my mistake, buy Midea.