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Windmill

Windmill 10,000 BTU Inverter Window Air Conditioner with WhisperTech - Ultra-Quiet & Smart, Cools up to 450 Sq. Ft. - Easy Install, App/Wi-Fi, Voice-Enabled, Remote Control, High Energy Efficiency

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Availability: Only 4 left in stock, order soon!
Fulfilled by Sylvane
Arrives Tuesday, May 13
Order within 7 hours and 33 minutes
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Style: 10000 BTU WhisperTech


Features

  • Ultra-Quiet Air Conditioner Window Unit For A More Comfortable Home: Curved edges and clean lines make The Windmill AC beautiful inside and out. An auto-dimming LED display and WhisperTech, which is 9X quieter than legacy, non-inverter window ac units, help you sleep more comfortably. This 10000 BTU window air conditioner is also more efficient and quietly cools spaces up to 450 sq ft.
  • The Easiest Room Air Conditioner Installation Kit: A pre-assembled install kit has Windmill's window air conditioners ready to go right out of the box. Also included is a simple-to-follow install guide so you can enjoy ultra-quiet comfort almost immediately.
  • Efficient Cooling: Central air-like airflow comes out at a perfect 45-degree angle. Top vents blow air up and out in the room, not in your face. Windmill's quiet window air conditioner provides the perfect angle for better airflow and uses R32, a refrigerant 68 percent less detrimental to the environment than what's commonly used.
  • Control Your Small Room Air Conditioner Anywhere, Anytime: Integrate The Windmill AC into any smart home, and control from your smartphone for easier access. Its top-rated app lets you turn it on before you get home on a blazing hot day and shut it off remotely in case you forgot. You can also use your voice to control this smart AC window unit using any voice assistance device.
  • 60 Years of AC Expertise: Windmill believes in beautiful, simple technology, better urban living, good quality air, and offering the support you deserve. Combining a fresh, modern perspective with 60 years of AC expertise led to building a smart window air conditioner with todays needs in mind.

Brand: Windmill


Capacity: 10000 British Thermal Units


Cooling Power: 10000 British Thermal Units


Special Feature: Remote Controlled, Inverter Compressor, WiFi Enabled, Dust Filter, Fast Cooling


Product Dimensions: 22.5"D x 19.3"W x 13.3"H


Color: White


Voltage: 115 Volts


Refrigerant: R-32


Filter Type: Activated Carbon Filter


Power Source: Corded Electric


Brand Name: ‎Windmill


Model Info: ‎WM_WhisperTech_10000BTU


Item Weight: ‎62.9 pounds


Product Dimensions: ‎22.5 x 19.3 x 13.3 inches


Item model number: ‎WM_WhisperTech_10000BTU


Batteries: ‎2 AA batteries required.


Efficiency: ‎2.62


Capacity: ‎10000 British Thermal Units


Installation Type: ‎Window


Part Number: ‎


Form Factor: ‎Window


Special Features: ‎Remote Controlled, Inverter Compressor, WiFi Enabled, Dust Filter, Fast Cooling


Color: ‎White


Voltage: ‎115 Volts


Wattage: ‎900 watts


Certification: ‎Energy Star


Batteries Included?: ‎No


Batteries Required?: ‎No


Battery Cell Type: ‎Alkaline


Floor Area: ‎450 Square Feet


Date First Available: May 10, 2023


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, May 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Loving our Windmill!
Style: 10000 BTU WhisperTech
We’ve been so impressed with our Windmill AC! Installation was incredibly easy, everything was clearly laid out and took hardly any time to set up. The design is sleek and fits beautifully with our space. One of the best parts is how quiet it is, we can barely hear it running, even at night. The companion app is a game changer too: being able to pre-schedule the temperature from our phones makes everything super convenient. Highly recommend! ... show more
Reviewed in the United States on April 16, 2025 by Peter Bogulaski
    • We love our Windmill decision
Style: 10000 BTU WhisperTech
Review Image by Lunas Dad Lunas Dad
The windmill unit is amazing and 10k btu is a must. A consistent cool air since installing has significantly helped us to avoid those unexpectedly hot days and keep good airflow in our apartment that doesn't have the best ventilation. It's quiet and easy to use. One issue with Wi-Fi connectivity but all it took was hitting reconfigure on the app! We've been considering an AC unit to help supplement our building fan HVAC in the shoulder seasons. TLDR, on hot spring days before the building switches to AC our east facing windows can make our apartment 80 degrees or warmer. We didn't want a big ugly unit so windmill was always a brand we were eyeing. I can confidently say it solved both our problems with 1) a sleek design that maybe even adds to our apartment and 2) a quiet but effective strong cold air flow. 10/10 would buy again. ... show more
Reviewed in the United States on March 29, 2025 by Lunas Dad Lunas Dad
    • Fantastic Product, Exceptional Customer Service and Seamless Installation.
Style: 12000 BTU WhisperTech
Review Image by Caroline Brennan Caroline Brennan
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. ... show more
Reviewed in the United States on August 1, 2024 by Caroline Brennan Caroline Brennan
    • CRITICAL DESIGN FLAW, PLEASE READ
Style: 10000 BTU WhisperTech
Windmill Window AC Unit Review: A Disappointing Letdown I 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. ... show more
Reviewed in the United States on March 16, 2025 by Anthony Edwards

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