Windmill Window Air Conditioner - Quiet & Smart. Easy Install, Voice-Enabled, Remote & App Control AC Unit - 12,000 BTU Inverter w/WhisperTech
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This item is eligible for return within 30 days of receipt
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
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Availability:
Only 4 left in stock, order soon!
Arrives
May 22 – May 26
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Style: 12000 BTU WhisperTech
Features
- SMART, EFFICIENT COOLING: Unlike standard window a/c models, Windmills WhisperTech dual air intake design pulls in air from the front and the bottom, improving efficiency and delivering ultra-quiet, room-wide cooling at a perfect 45 angle.
- ENERGY-SAVING PERFORMANCE: With double-insulating side panels, this window air conditioner keeps cool air in, blocks outside noise, and reduces energy consumption for lower utility bills.
- CONTROL FROM ANYWHERE: Control your AC from anywhere using the top-rated Windmill Air mobile app, plus voice control compatibility with smart home devices for ultimate convenience.
- PREMIUM FEATURES & DESIGN: This air conditioner includes dual-filtration with a washable mesh filter and optional activated carbon filter, auto-dimming LED lights, 3 cooling settings, and 3 fan speeds for customized comfort.
- QUICK & EASY INSTALLATION: No tools, no hasslethis window ac unit comes with a pre-assembled install kit, so you can set it up quickly and enjoy powerful cooling without complicated instructions or heavy lifting.
Brand: Windmill
Capacity: 12000 British Thermal Units
Cooling Power: 12000 British Thermal Units
Special Feature: Dust Filter, Fast Cooling, Inverter Compressor, Remote Controlled, WiFi Enabled
Product Dimensions: 22.5"D x 19.3"W x 13.3"H
Start year: 2022
Color: White
Noise Level: 40 Decibels
Refrigerant: R-32
Filter Type: Antimicrobial-protected mesh, Activated carbon
Cooling Power: 12000 British Thermal Units
Additional Features: Dust Filter, Fast Cooling, Inverter Compressor, Remote Controlled, WiFi Enabled
Color: White
Noise: 40 Decibels
Refrigerant: R-32
Filter Type: Antimicrobial-protected mesh, Activated carbon
Inverter Type: Has Inverter
Installation Type: Window
Compressor Type: Inverter Compressor
Is Outdoor Unit Required: No
Air Conditioner Application: Residential Indoor
Power Source: Corded Electric
Wattage: 3516 watts
Is Product Cordless: No
Is Electric: Yes
Efficiency: Highly Efficient
Capacity: 12000 British Thermal Units
Floor Area: 550 Square Feet
Form Factor: Window
Brand Name: Windmill
Start Year: 2022
Model Name: 12000 BTU WhisperTech
Model Number: 12W2Wi
UPC: 860003069547
Manufacturer: Windmill
Unit Count: 1.0 Count
Item Dimensions D x W x H: 22.5"D x 19.3"W x 13.3"H
Window Opening Maximum Width: 37 Inches
Window Opening Minimum Height: 13 Inches
Window Opening Minimum Width: 22 Inches
Window Opening Maximum Height: 14 Inches
Control Method: Remote, Touch
Controller Type: Remote Control
Warranty Type: Full
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
May 22 – May 26
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.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Style: 12000 BTU WhisperTech
This was a super easy install. My husband was able to install it in less than 20 minutes. It’s VERY quiet. My regular fan is louder than this unit on high. It cooled the room quickly as well. The app was very easy to setup, intuitive and fast. Aesthetically… probably the best looking window unit I’ve seen. Very impressed and definitely recommend.
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Reviewed in the United States on March 15, 2026 by KD
Style: 12000 BTU WhisperTech
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.
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Reviewed in the United States on July 11, 2024 by wanderer
Style: 12000 BTU WhisperTech
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.
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Reviewed in the United States on August 1, 2024 by Caroline Brennan
Style: 12000 BTU WhisperTech
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.
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Reviewed in the United States on July 31, 2025 by Joseph L.
Style: 12000 BTU WhisperTech
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.
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Reviewed in the United States on September 9, 2024 by CHP
Style: 12000 BTU WhisperTech
The windmill is sleek, relatively quiet compared to other ACs, and easy to install. Such a great purchase!
Reviewed in the United States on March 15, 2026 by LauraB