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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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12W2WI
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 1610.
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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 Windmill Whispertech 8K Just installed it and so far so good! Very quiet, nice and cool!
Date published: 2026-06-10
Rated 5 out of 5 by from 12,000 BTU Working Great Had some help replacing a Windmill 12,000 BTU this past week. The support from the company is top notch. The replacement has been working perfectly. Was super easy to install by myself. Love that I can control it through the app if I’m not home. I’m very happy with this unit!
Date published: 2026-06-09
Rated 5 out of 5 by from Air Conditioners We love our Windmill ACs. They are not only beautiful but quiet, easy to install, and keep our bedrooms cool for sleeping.
Date published: 2026-06-09
Rated 5 out of 5 by from Windmill AC very nice unit. Easy to install and does its job quietly and efficiently. The only fault was with the installation and operating instructions; very hard to find and once I found the web page, the link to the operating instructions was ambiguous, didn’t mention operating instructions specifically. Both manuals are now downloaded to my iPad, but you really should make it more obvious where to get these critical instructions when the new owner opens the box for the first time. I’m sure it all makes sense to you, but you need to have someone who is unfamiliar with the product try to find the manuals, especially an older person who isn’t as comfortable using the Internet to find things
Date published: 2026-06-09
Rated 5 out of 5 by from Ten out of ten I run 3 air purifiers in my little house and getting an AC unit that wasn’t going to be creating all this mold was proving to be rather stressful until I was recommended Windmill by a coworker. The unit runs quieter than my air purifier and honestly cools more than our bedroom. I have two of the fans and love them too. And it’s also aesthetically pleasing. We have used our unit everyday so far and are thinking about purchasing a second one for the other end of the house. My husband and I installed the unit in less than a half hour and the directions were super easy!
Date published: 2026-06-08
Rated 5 out of 5 by from Above and beyond Great unit , great company, the best customer service. I have 2.... I highly recommend windmill great people they went above and beyond to replace a unit just after the warranty period.... They stand behind their product
Date published: 2026-06-07
Rated 5 out of 5 by from Best A/C Ever This is the best window unit I have ever had, and I have had many. I've lived in New York City for 25+ years, so I have seen and had my fair share of a/c solutions. You're not going to top Windmill. Highly recommend.
Date published: 2026-06-06
Rated 5 out of 5 by from Awesome ac Love this ac, my second windmill So quiet and don’t make me feel sick
Date published: 2026-06-05
Rated 5 out of 5 by from Replacement A/C unit I received my replacement unit quickly. Installed a couple of days ago. Working as it supposed to. Very satisfied.
Date published: 2026-06-03
Rated 5 out of 5 by from Great customer service My windmill stopped working and although it was out of warranty after trying everything to fix it and troubleshoot it, the company decided to replace it. A brand new machine just arrived and I’m thrilled. Thanks windmill!
Date published: 2026-06-01
Rated 5 out of 5 by from Excellent service I can't believe that they took care of it so quickly and efficiently. I never would have believed that they would replace my air conditioner. It was still in the warranty and the next day I had a new air conditioner Great service great product thank you for everything
Date published: 2026-05-31
Rated 5 out of 5 by from Quality Air Conditioner with Questionable Advertising I was looking for a quality, small air conditioner with an emphasis of quietness. With regard to quality and quiet, this air conditioner meets my expectations. However, one thing that was made clear to me in the advertising of this product is the ease of installation compared to other budget mass produced air conditioners. As simple as sliding in the AC through the window and spreading the curtains to meet the width. The pictures of the product on the site went as far as to provide an info graphic of X's, indicating the usual materials that come with other common air conditioners that you will not have to fuss with this product. Maybe it would be a stretch, but I imagine people felt similarly mislead when opening the box to see the same materials they thought they would not have to deal with tacked on with a manual in bold print (45 minute installation). This is something admittedly I did not follow, I slid the air conditioner in, expanded the curtains, and used the materials as needed to seal it. The same materials were used to adjust the AC in the proper angle to make sure there is minimal rattling and buzzing. I will have to make sure to preface since I did not follow the 45 minute installation process, the quirky behaviors might be a result. Nonetheless, the AC has been working flawlessly, but with noises that have been unbearable without adjustments in the window or a good push on certain parts of the front. It happens at random and is usually an easy fix. Normal operation, the sound is perfect and what I was looking for. The only thing I cannot fully portray is the longevity of the this AC.
Date published: 2026-05-29
Rated 5 out of 5 by from Excellent Air Conditioner Fast and efficient cooling. Very impressed with the unit and also with Windmill's Customer Service folks. A great group of people working for a great company!
Date published: 2026-05-25
Rated 5 out of 5 by from Bought Two A/C Units I purchased two of these as the first AC units in my new apartment. This is the first time I haven't had central AC, but these window units make it feel like I do again. They're modern, easy to operate, and keep the room cool and quiet. I have one in my bedroom and one in my living room, and I don’t see myself replacing my AC units anytime soon.
Date published: 2026-05-08
Rated 5 out of 5 by from Easy installation, beautiful product Thoroughly impressed by how easy to install the unit was. All is so well thought through that they even include the scissors for cutting the insulation pad (which is the chicest of the sort I’ve seen). The unit itself is minimalist and beautiful to look at. Very pleased overall.
Date published: 2026-04-25
Rated 5 out of 5 by from Nice AC Amazing customer service during purchase; will buy again at the same location
Date published: 2026-04-24
Rated 5 out of 5 by from So quite !!! I Love my windmill air conditioner. Not only does it look great but it’s powerful and oh so quiet. If you’re looking for a new air conditioner look no further!!!!
Date published: 2026-04-24
Rated 5 out of 5 by from Great AC for NYC studio Shipped quickly and super simple to install - lovely to keep on all night as it’s perfectly quiet white noise. Room stays cool, remote and app also very handy to make everything flow easier. Also aesthetically pleasing inside and out. Would always recommend !!
Date published: 2026-04-19
Rated 5 out of 5 by from Best a/c so far Super quiet, works great! App is super easy to use and this a/c was extremely easy to install. I just purchased another one for my daughter’s room!
Date published: 2026-04-17
Rated 5 out of 5 by from Old school service on new school technology amazing combo We bought several of these and they worked amazingly well. Unfortunately, about seven months in one went bad. Windmill has an amazing customer support team within moments I had responses was able to provide them the information and they had one shipped to me immediately to replace it amazing service old school version new school technology thank you
Date published: 2026-04-04
Rated 5 out of 5 by from Window unit as described Perfect. Our house was built in the early 50’s and it still did fine.
Date published: 2026-04-02
Rated 5 out of 5 by from They came through I had a problem with my AC and they came through with a replacement. Thanks a bunch
Date published: 2026-04-01
Rated 5 out of 5 by from I love this thing I live in the Chihuahua desert I stand by this product when it reaches 112 outside. I have one in every room of my house because I live in a historic building with no AC. And moreover I stand by this company with their amazing customer service who helped me out when I was in a pickle. They gave me stress-free troubleshooting and fast responses. The best support I’ve honestly had in years. And with no subscription go figure, other companies wish they had customer service like this.
Date published: 2026-03-21
Rated 5 out of 5 by from ⭐️⭐️⭐️⭐️⭐️ This window AC is a total game changer. It cools the room quickly, runs quietly, and keeps a consistent, comfortable temperature even on really hot days. Installation was easy, and it feels sturdy and reliable. Definitely worth it, highly recommend!
Date published: 2026-03-18
Rated 5 out of 5 by from Amazing Service The claim team is amazing and helped me greatly. The replacement unit is in place and created a quiet and cool space in our room over the garage! I could not be happier.
Date published: 2026-03-17
Rated 5 out of 5 by from Amazing! I purchased two of these units last year, and I am so happy with them. I'm happy for 3 reasons. 1. They cool the room down very nicely. 2. They are quiet, very quiet. 3. They look nice in the window - sleek.I have two more rooms that use window AC's; however, the current ones still work, so I can't justify purchasing new ones. But when I do, I will head on over to the retailer that sells these amazing units. Very satisfied customer who will be returning for another purchase or two.
Date published: 2026-03-16
Rated 5 out of 5 by from Awesome little window AC I got the 6000 BTU version for a teenager’s small bedroom. The unit was great. Very easy to install. Looks sleek. Having it available through the app is a nice bonus. Plan to replace older, less efficient units with other Windmill ACs this coming summer
Date published: 2026-03-11
Rated 5 out of 5 by from Amazing! Excellent product and outstanding customer service! The AC does a fantastic job keeping the room cool. What truly impressed me, though, was how responsive, and helpful the support team was after I contacted them about an issue I had. They were kind, attentive, professional, and truly committed to helping/making things right. It’s refreshing to see a company that truly cares about its customers, and stands behind its products. I’m beyond satisfied, and would highly recommend them to anyone looking for a reliable AC, and outstanding support!
Date published: 2026-03-08
Rated 5 out of 5 by from Great!!! Highly recommend !! Reliable and powerful AC!! Love the brand
Date published: 2026-03-04
Rated 5 out of 5 by from The Upgrade of a Lifetime My husband and I purchased two Wind units last summer after our (not so old) units from a certain brand experiencing awful mold issues were deemed unfit for use. We are so distraught and really put time and effort into shopping for replacements. When we found Windmill, we knew we found a brand we could trust. Installing the units was a breeze - I did it 99% by myself, with a quick hand from my husband to support them before locking in. The custom side panels are amazing! Create a chic and clean look that feels very well insulated. The whole profile of the units is sleek and designer looking. Operation-wise, the units are whisper quiet and cool extremely efficiently/quickly. We will be moving homes this summer, and I’m honestly excited (something I never thought I’d say) to get our units in the new windows! Windmill is an changer when it comes to window ACs.
Date published: 2026-02-20
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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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