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Windmill WhisperTech 12,000 BTU 115V Smart Energy Star Window Air Conditioner with Inverter, 3 Fan Speeds, Sleep Mode & Remote Control - White

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3.7 out of 5 Customer Rating
Windmill WhisperTech 12,000 BTU 115V Smart Energy Star Window Air Conditioner with Inverter, 3 Fan Speeds, Sleep Mode & Remote Control - White is rated 4.8 out of 5 by 1529.
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Windmill WhisperTech 12,000 BTU 115V Smart Energy Star Window Air Conditioner with Inverter, 3 Fan Speeds, Sleep Mode & Remote Control - White, , hires
Windmill WhisperTech 12,000 BTU 115V Smart Energy Star Window Air Conditioner with Inverter, 3 Fan Speeds, Sleep Mode & Remote Control - White, , hires
Windmill WhisperTech 12,000 BTU 115V Smart Energy Star Window Air Conditioner with Inverter, 3 Fan Speeds, Sleep Mode & Remote Control - White, , hires
Windmill WhisperTech 12,000 BTU 115V Smart Energy Star Window Air Conditioner with Inverter, 3 Fan Speeds, Sleep Mode & Remote Control - White, , hires
Windmill WhisperTech 12,000 BTU 115V Smart Energy Star Window Air Conditioner with Inverter, 3 Fan Speeds, Sleep Mode & Remote Control - White, , hires
Windmill WhisperTech 12,000 BTU 115V Smart Energy Star Window Air Conditioner with Inverter, 3 Fan Speeds, Sleep Mode & Remote Control - White, , hires
Windmill WhisperTech 12,000 BTU 115V Smart Energy Star Window Air Conditioner with Inverter, 3 Fan Speeds, Sleep Mode & Remote Control - White, , hires
Windmill WhisperTech 12,000 BTU 115V Smart Energy Star Window Air Conditioner with Inverter, 3 Fan Speeds, Sleep Mode & Remote Control - White, , hires
Windmill WhisperTech 12,000 BTU 115V Smart Energy Star Window Air Conditioner with Inverter, 3 Fan Speeds, Sleep Mode & Remote Control - White, , hires
Windmill WhisperTech 12,000 BTU 115V Smart Energy Star Window Air Conditioner with Inverter, 3 Fan Speeds, Sleep Mode & Remote Control - White, , hires
Windmill WhisperTech 12,000 BTU 115V Smart Energy Star Window Air Conditioner with Inverter, 3 Fan Speeds, Sleep Mode & Remote Control - White, , hires
Windmill WhisperTech 12,000 BTU 115V Smart Energy Star Window Air Conditioner with Inverter, 3 Fan Speeds, Sleep Mode & Remote Control - White, , hires

Key Features

  • Cooling BTU: 12000
  • Inverter Technology: Yes
  • Power Requirements: 110 Volt 15 or 20 Amp Circuit (Parallel Plug)
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About this Item

Windmill WhisperTech Smart Energy Star Window Air Conditioner with Inverter, 3 Fan Speeds, Sleep Mode & Remote Control

The Windmill AC with WhisperTech Inverter Technology is an efficient, quiet, eco-friendly and smart window air conditioner built for today's needs. Award winning WhisperTech Inverter Technology saves up to 40% on energy cost, faster cooling, Quiet Operation (9x quieter than traditional units). With curved edges, clean lines, and a low-profile look, Windmill is designed to blend right into your home. Comes with the install kit pre-assembled for a fast and easy setup.

Key Features:

Easy-to-install
the install kit is already pre-assembled and ready-to-go in the box, making setup a breeze

Better sleep
our LED display fades after 60 seconds, eliminating unnecessary blue light in your home

Efficient
air blows up and out into your room at a 45° angle for better cooling

Quiet
the Windmill ac runs smoothly and gently in the background

Product Height
13.3 Inches
Product Depth
22.5 Inches
Product Width
19.3 Inches
Product Weight (lbs.)
65 Lb(s)
Window Opening Max. Width (in.)
37 Inches
Window Opening Max. Height (in.)
14 Inches
Window Opening Min. Height (in.)
14 Inches
Color
White
Series
WhisperTech
Type
Window
Window Type
Double Hung Window
Room Size
Medium
Cooling BTU
12000 BTU
Cooling Speeds
3
Heat/Cool
No
Heating Capacity (BTU)
-
Number of Fan Speeds
3 Fan Speeds
No. of Air Flow Directions
1
CFM
218 CFM
Vent/Air Exchange Exhaust
No
Moisture Removal (Pints/hr)
3.2 Pints/hr
Filter Description
Antimicrobial-protected mesh (washable) and activated carbon (lasts ~3mo).
Standard Mesh Filter
Yes
Charcoal Filter
No
Washable Filter
Yes
Inverter Technology
Yes
Chassis Type
Fixed
Additional Features
The Windmill AC with WhisperTech Inverter Technology is an efficient, quiet, eco-friendly and smart window air conditioner built for today's needs. Award winning WhisperTech Inverter Technology saves up to 40% on energy cost, faster cooling, Quiet Operation (9x quieter than traditional units). With curved edges, clean lines, and a low-profile look, Windmill is designed to blend right into your home. The small-sized 12,000 BTU unit cools spaces up to 550 square feet. And comes with the install kit pre-assembled for a fast and easy setup.
General Features
Inverter, Quiet, Smart
WiFi Connected
Yes
Wifi/App Controllable
Wifi/Smartphone App Controllable
Smart Features
-
Works with
-
Control Type
Digital
Temperature Display
Yes
Automatic Timer
Yes
Delay Timer
Yes
Automatic Shut Off/Sleep Mode
Yes
Quietest
Yes
Timer Included
Yes
Remote Control Included
Yes
Quick Mount Window Kit
Yes
Upgradeable Filter
No
Washable Filters
Yes
Energy Star Rated
No
Energy Efficiency Ratio
13.5 EER
Energy Star Approved
Yes
Power Cord Length (in.)
78 Inches
Power Requirements
110 Volt 15 or 20 Amp Circuit (Parallel Plug)
Voltage (V)
115 Volts
Amperage
11.6
Auto Restart
Yes
Refrigerant Type
R32
Power Cord Location
Right Side
Cooling Amps
11.6 Amps
ADA Compliant
No
CSA Listed
No
ETL Listed
No
UL Listed
No
Warranty Terms - Parts
12 Month(s)
Warranty Terms - Labor
12 Month(s)

Customers Say

AI-generated from the text of customer reviews

This thoughtfully designed window AC unit transforms the typical eyesore into an attractive appliance that genuinely enhances modern living spaces. Its standout upward-flowing air distribution creates an even, comfortable environment without harsh cold spots or direct blasts. While the unit requires two people for installation due to its solid build, the well-organized kit and clear instructions make setup surprisingly manageable. Daily life with this AC is notably pleasant - the whisper-quiet operation feels more like gentle white noise, and the WiFi controls let you adjust settings from anywhere, though connectivity can occasionally hiccup. The efficient cooling performance, combined with energy-saving features and simple maintenance, makes it a practical choice for those seeking both comfort and convenience.

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Rated 5 out of 5 by from Definitely recommend Quiet, efficient, and not an eye sore. This is the air conditioner I’ve been looking for. Plan to get another for the upcoming summer.
Date published: 2026-02-02
Rated 5 out of 5 by from Happy to have purchased I love my Windmill AC. I recently added the side panels. They help w the look and also help w the cold drafts when it’s not cooling the room. Quiet and love the magnetic cover when it’s time to clean the filter.
Date published: 2026-02-02
Rated 5 out of 5 by from Mark My Windmill AC is just what I needed. Provides the extra AC I need in my primary bedroom and is actually aesthetically pleasing too!
Date published: 2026-02-02
Rated 5 out of 5 by from Windmill AC Great Product. Very efficient with very good instructions which made it easy to install. Also lovely minimalist design. Looking forward to a cool bedroom next summer.
Date published: 2026-02-02
Rated 5 out of 5 by from Great A/C We got two Windmill units in 2024 and have had nothing but a great experience with them. They are easy to install, look beautiful and are much quieter than our old unit. Now we don't have to turn the A/C off to hear the TV anymore! Many people in our building also have them. I highly recommend!
Date published: 2026-02-02
Rated 5 out of 5 by from Cool and Quiet, Fresh and Clean We love Windmill so much, we retired our perfectly good Frigidaire air conditioner for our kids’ room because we wanted something quieter, more intuitive and energy efficient after we bought our fist Windmill for our dining room several years ago and it cooled down the whole house. Saving for the next one!
Date published: 2026-02-02
Rated 5 out of 5 by from Great AC We’ve loved our windmill ac units and air purifier! They’ve worked perfectly. We’ve had our air conditioner units for two summers now. I love the look of these products and that they aren’t eye sores like most others. They are simple to use too!
Date published: 2026-02-02
Rated 5 out of 5 by from Window AC I bought 2 & i love the design & look of it & it’s pretty quiet & gets my room nice & cool during the summer season.
Date published: 2026-02-02
Rated 5 out of 5 by from Best AC unit I’ve owned a competitor u-shaped window unit and love the Windmill more! The design is perfect and doesn’t stick out in our living room. It was incredibly easy to set up and I love that you can control it via your phone when you aren’t home. I recommend this unit to everyone.
Date published: 2026-02-01
Rated 5 out of 5 by from Great cooling solution I love my window unit. I have a Cape Cod, and the upstairs bedroom is too hot to sleep in during the summer. It also isn’t a ton of square feet. The Windmill AC I bought is the perfect size. It is sleek, effective, and so efficient that I don’t notice a huge difference in my electrical bills in the summer. I am really satisfied with it.
Date published: 2026-02-01
Rated 5 out of 5 by from Great AC unit with smart features and easy installation! This AC unit was so easy to install and was so quiet that I ended up buying a second one for my son's room. I bought the smallest one for his room and its so quiet and perfect for his small nursery. Also that fact that I can control the AC unit from my phone helps when the temperature changes drastically in his room and I don't have to sneek into his room while hes asleep. Wonderful unit!
Date published: 2026-01-30
Rated 5 out of 5 by from I love Windmill! I have 3 Windmill AC units, they're all quiet, efficient, and a breeze to install! Replaced older (not too old) traditional window ac units, these inverter units are significantly quieter, and cost effective. We can sleep at night with the unit going in our bedroom, and the smart app makes using them a breeze.Thanks Windmill!
Date published: 2026-01-30
Rated 5 out of 5 by from Quiet and elegant! My favorite. Works great in my mid-size NYC apartment. It's also very functional and its not loud at all. It looks also way cuter than other models.
Date published: 2026-01-29
Rated 5 out of 5 by from Best AC unit! This AC unit is wonderful! It’s much quieter than the typical window units. The unit comes with everything you need to get set up and it couldn’t have been easier. Highly recommend!
Date published: 2026-01-28
Rated 5 out of 5 by from wonderful and quiet! We love (all three!) of our Windmill ACs. Nice to look at and be around, and doesn't blast the cold air directly at whatever's in front of it.
Date published: 2026-01-27
Rated 5 out of 5 by from Great low profile AC I love it. It’s whisper quiet and powerful. Great purchase!
Date published: 2026-01-27
Rated 5 out of 5 by from Pretty on the Outside (and inside) While all of my neighbors have unsightly and rickety window bangers, my sleek Windmill sits gracefully perched in the window. I am stopped on the street with fingers pointing up above, "What is that??" I proudly declare, "She's a Windmill" Before you spend the money on mini-splits or central air, give the Windmill a try!
Date published: 2026-01-27
Rated 5 out of 5 by from Powerful AC We absolutely love our Windmill AC. It's incredibly powerful and cools our apartment quickly, even during the hottest summer days. The sleek design is a huge upgrade from traditional window units, and it's so much quieter than we expected. Perfect for small NYC spaces where every detail matters. Highly recommend!
Date published: 2026-01-26
Rated 5 out of 5 by from Don't hesitate, they're great! We purchased three Windmill AC units at the same time after unexpectedly needing to replace our previous brand, and we couldn’t be happier. Affordability was important, but so was finding something that was both powerful and quiet—especially with Chicago summers that regularly hit well over 100°.We keep our window units installed year-round since radiator heat can be unpredictable, and even in the coldest months our home can feel uncomfortably warm. Because of that, we also wanted something that looked great and wasn’t an eyesore. Windmill delivered on every front.I was initially drawn to the simple, clean design, but the performance has been just as impressive. We’ve used these units for three seasons now with zero complaints. Bonus points for the seamless Google Home integration—we love being able to adjust the temperature remotely and keep our dogs comfortable when we’re away.
Date published: 2026-01-26
Rated 5 out of 5 by from Very quiet We needed a better AC to cool our first floor area and our old one was so loud and inefficient. I saw an ad for Windchill and figured we give it a try. Needless to say I want to purchase more to put in other areas of my house. Really glad I got one! Highly recommend.
Date published: 2026-01-26
Rated 5 out of 5 by from Attic cool The windmill was great find and quiet option. I have 3 of them in my attic apartment and it really cools the entire apartment in the hot summer months. It also blends in with my aesthetic and not an eye soar.
Date published: 2026-01-26
Rated 5 out of 5 by from Best Window AC Unit by FAR! Before purchasing the Windmill AC Unit, I tried a more established brand and ended up returning it within two weeks—it was loud, difficult to use, and barely made a difference in the room’s temperature. As soon as I installed the Windmill, the difference was immediate. The air felt fresher, the sound level is perfect (more like subtle white noise than an AC unit), and the sleek design fits seamlessly into my space.The app is also incredibly user-friendly, which makes controlling everything easy. I would choose this unit again and again over other brands. My only suggestion would be to offer additional window insulation or panel sizes—my window is unusually wide, so I had to DIY and cut extra insulation to make it work.Aside from that minor issue, I absolutely love this AC, and the customer service team has been amazing. 10/10 would recommend.
Date published: 2026-01-26
Rated 5 out of 5 by from One of the Best Designs I haven't seen any AC's look this modern which is one of the main reasons why I got it. It's also quite compact for the BTU's it delivers. The app is a plus when I'm away from home or even when I am home and too lazy to get up. Would recommend.
Date published: 2026-01-26
Rated 5 out of 5 by from Definitely worth it. good if you have sensory issues I have had my windmill AC for 3 years now. It's the best window unit I've ever used. It's pretty quiet & very easy to clean. I love that the air blows up at an angle so I can still have things in front of it, but also because I really hate when the air blows straight on me. That's probably my favorite thing.
Date published: 2026-01-26
Rated 5 out of 5 by from Solid AC unit I live in 100 year old building with 4 exposures (n,s,e,w). We have to rely on AC units to keep our apt cool. We bought 3 units and it has seriously helped. The units are understated, not obnoxiously loud and best of all the app woes quite well to turn the units on before we get home. It’s so easy to program them to turn on and off that it almost feels like central air because when we come home it’s actually cool! I had an issue with one unit and the customer service was also great. Stand out product and buying experience.
Date published: 2026-01-26
Rated 5 out of 5 by from Great AC, quiet and powerful This AC really does a great job of cooling off our large living room in the summer, and is very quiet as well. Highly recommended!
Date published: 2026-01-26
Rated 5 out of 5 by from Great A/C I needed to replace a 15-year-old 5000 BTU A/C this summer since it wasn’t cooling as effectively (and my town offered a rebate for recycling inefficient appliances). I’d seen ads and reviews of the Windmill, so I convinced my wife to let me order it. The install was very easy. The most difficult part was taking out the old unit. Controlling the unit via the app is easy, and I like the energy use meter. We also go out of town once a year, so the ability to start it the day before we return is very helpful (much better than returning to a 90°+ house). I also ordered one of the interior covers, and it’s doing a great job of keeping the cold weather from getting in during this winter storm.
Date published: 2026-01-25
Rated 5 out of 5 by from I love my Windmill Air conditioner I have a small house in upstate New York that is about 1000 ft.2 and my 10,000 BTU Windmill Air extremely quietly cools the whole house even in the hottest days of the summer. It’s attractive, easy to change filters on, and extremely quiet, which is what I really need since I sit very close to it in my living room. It is certainly the best air conditioner I’ve ever had and I have suggested it to many people. It is well worth the money spent. I have now gone through two summers with my Windmill Air and I can report that it runs like a charm.J Lotus
Date published: 2026-01-23
Rated 5 out of 5 by from Best window AC ever! I've gone through many window AC units but Windmill is by far the best. The installation is seamless and easy since the unit itself is so sleekly designed, no rough or sharp edges that could scrape you. Having it be able to pair with a phone app makes its use that much simpler, it's really a breeze. And it's so much more quiet than any other brand I've used. You can finally hear the TV even when the unit is on full blast, which is something that we used to overcome by using close captioning because other brands were so loud. We have 2 Windmill units now, one for the bedroom and one for the living room. If we ever needed another we would for sure get it from them. We can't recommend Windmill enough.
Date published: 2026-01-21
Rated 5 out of 5 by from Wonderful AC This AC is great! It is so quiet, perfect for my living room. I really appreciate being able to control the unit on the app on my phone so I can make adjustments for my dog or turn it back on before I get back from a trip so my apartment is cool by the time I get home. This along with my air purifier were well made purchases from Windmill.
Date published: 2026-01-21
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Can this ac be installed in a sleeve through the wall?

Asked by: Jp12
No, its a window unit
Answered by: Dwe11
Date published: 2025-05-04
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