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FREE 30-day refund/replacement
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:
In Stock.
Arrives
Tuesday, Nov 10
At a glance
- Condition
- New
- Set
- 5000 BTU Lite
- Model
- 05W11
- Capacity
- 0.42 tons
- Dimensions
- 14.8"D x 17.8"W x 15.1"H
- Cooling Power
- 5000 british thermal units
- Special Feature
- WiFi Enabled
- In the box
- User Manual
Features 5
- SMART AC FOR SMALL SPACES: The perfect window unit air conditioner for bedrooms, home offices, and small apartments up to 150 sq ft with efficient 5,000 BTU cooling power and award-winning brand design that complements any room decor.
- SMOOTH AIRFLOW COOLING: Enjoy cooling starting at just 51 dB (think light rainfall) with smooth airflow performance that won't disturb your sleep, work, or relaxation time.
- CONTROL FROM ANYWHERE: Control your 5,000 BTU air conditioner from anywhere using the streamlined Windmill Air app for iOS and Android, plus voice control compatibility with smart home devices for ultimate convenience.
- PREMIUM FEATURES & DESIGN: Features a sleek digital control panel with auto-dimming LEDs, easy-access washable filter, 3 cooling modes (cool, eco, fan), and 3 fan speeds for customized comfort.
- QUICK & EASY INSTALLATION: This window A/C unit includes a complete installation kit for standard single & double-hung windows (min. opening height: 14.5", width: 23-34"). Setup takes minutes so you can start cooling your space without complex instructions.
Specs 28
| Brand | Windmill |
|---|---|
| Capacity | 0.42 tons |
| Cooling Power | 5000 british thermal units |
| Special Feature | WiFi Enabled |
| Product Dimensions | 14.8"D x 17.8"W x 15.1"H |
| Noise Level | 51 db |
| Refrigerant | R-32 |
| Power Source | Corded Electric |
| Form Factor | Stand Alone |
| Model Name | 5000 BTU Lite |
| Additional Features | WiFi Enabled |
| Noise | 51 db |
| Inverter Type | No Inverter |
| Installation Type | Window |
| Air Conditioner Application | Residential |
| Item Dimensions D x W x H | 14.8"D x 17.8"W x 15.1"H |
| Window Opening Maximum Width | 34 inches |
| Window Opening Minimum Width | 23 centimeters |
| Window Opening Maximum Height | 34 inches |
| Floor Area | 150 sq ft |
| Room Type | Indoor Living Space |
| Brand Name | Windmill |
| Model Number | 05W11 |
| UPC | 199284718616 |
| Manufacturer | Windmill |
| Control Method | App |
| Controller Type | App Control |
| Operating Mode | Cooling |
No specs match.
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Nov 10
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
Amazing product and exceptional customer care!!!
Set name: 6000 BTU Lite
Amazing product and exceptional customer care!! I’m glad that I took a chance with Windmill which is a fairly newcomer in the world of air conditioning. It performs like a veteran but is also easy on the eyes (and on ears I should add). Plus, easy installation is just the cherry on the top. When I first saw Windmill promotions on social media platforms, they were promoted heavily on the sleek look and low noise level. They grabbed my attention but did not sway me from thinking that known players like LG, Frigidaire or Friedrich would be a better choice if I had to choose. I began my research for "the best AC" lists when it was time for me to purchase a new window AC. I was pleasantly surprised to find Windmill on those lists for energy efficiency, easy installation, quieter operation, and, of course, the good looks. Which meant that Windmill checked all the boxes for me and took away any doubts I had about the product. The model I opted for was Windmill 6000 BTU. The installation took zero effort. When the power was on, it cooled off the room almost instantly. I use the Windmill app to control the settings from my phone which is super convenient. It doesn’t hurt that the design is modern and fits well with the room decor. Windmill delivered exactly what they advertised. As for the Customer Care, I also read that their response is quick and professional which is absolutely true. Based on my experience, I can also add - thorough, understanding, knowledgeable and thoughtful. I had a technical issue with the display and Rachel provided me with detailed troubleshooting options. I had to communicate back and forth multiple times since I’m not tech-savvy but Rachel was extremely patient and understanding until the issue was resolved. It was incredible how patient, pleasant, and thoughtful Rachel was and I’m very grateful for her help. Needless to say, Windmill simply provides excellent product and exceptional customer care and I could not be happier with my purchase :)
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Reviewed in the United States on September 21, 2026 by soo
A little loud but great value
Set name: 5000 BTU Lite
A little loud but great value
Reviewed in the United States on September 15, 2026 by Gavin
A Good AC
Set name: 6000 BTU Lite
Cools well and fairly quiet. App is handy.
Reviewed in the United States on September 24, 2026 by Docschlac
This Windmill Lite AC unit packs a punch.
Set name: 6000 BTU Lite
I live in Arizona. It's already been 110 degrees. We're currently in monsoon here so inside the house can run 92F with about 50 percent humidity if it's rained. Swamp coolers are worthless this time of year. Sleeping at night had been horrible with taking cold showers in the middle of the night providing the only temporary relief. The landlord doesn't want unsightly holes in walls of her 1938 adobe house so mini splits were out. There's security wrought iron on the windows. So I thought a window AC unit was not a possibility. The Windmill Lite Window AC unit's measurements were just enough to touch the security bars. Instructions were easy. I've never had AC in the home just swamp coolers. This window unit from Windmill has been running since July. The AC unit itself has WiFi so I can set the temp from my phone. A great setting in the app is Night Mode, because my wife hates any light when she's trying to sleep. The AC blows cold. And it's not loud. I installed it in the bedroom window. No more sweaty nights. It just works great. Literally saved my summer.
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Reviewed in the United States on August 6, 2026 by AlbertM.
Not good for a bedroom
Set name: 6000 BTU Lite
This is a very attractive-looking air conditioner, but looks aren't everything. If you're considering it for a room around 250 square feet, be aware that it simply doesn't have enough cooling power. Despite the advertised coverage, I found it struggled to cool the space effectively. For a room that size, I'd recommend at least a 6,000–8,000 BTU unit—and I'd lean closer to 8,000 BTU. The noise was another major disappointment. Between the constant fan noise and an annoying buzzing sound, it's not something I'd want running while trying to sleep. In fact, it's noticeably louder than my 20-year-old window AC in the living room. This is Windmill's "Lite" series, so it feels like some compromises were made to hit the lower price point. Unfortunately, those trade-offs affected both performance and comfort. I'm returning this unit, but I'm not giving up on Windmill just yet. I'm going to give the Original series a try and hope it delivers a much better experience. Fingers crossed.
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Reviewed in the United States on July 16, 2026 by artlover
Works well but VERY loud
Set name: 6000 BTU Lite
The smaller sibling to the Wirecutter winner big brother. Summary list: PROS: Price, size, light weight, easy to install / remove, remote CONS: VERY loud compressor, filter rattles This unit is great for rooms needing seasonal cooling. It was fairly easy to set up and very light weight, making it a snap to install. Went with the 6000 BTU as it would be slightly more powerful to cool a bedroom quicker - which works well in current space use. The main drawback is how loud this product is when running. Installed two units, and both have the same issue. The compressor is much louder than other older LG 8000 BTU units I have used. In addition, the removable air filter rattles in both units as well. Pushing against the exterior or removing the filter, and the rattling goes away. This can be a distraction for those that are light sleepers. A nice unit for the price but not for those that prefer a quieter AC unit
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Reviewed in the United States on August 23, 2026 by Stephen K.
AC for the wind!
Set name: 5000 BTU Lite
⭐⭐⭐⭐⭐ Perfect for my small space, and it looks modern too. I’ve been using the Windmill 5K BTU in my studio apartment for about a week now and it’s honestly been such a great addition. I was worried it might not be powerful enough since it’s a smaller unit, but it cools my room super quickly. The setup was really easy, everything you need comes in the box, and I had it up and running by myself in under an hour. I also love how it looks. Most window ACs are bulky and kind of ugly, but this one actually blends in with my space and doesn’t stick out like an eyesore. One of my favorite features is the app. I like being able to adjust the temperature while I’m out, so I can come home to a nice, cool room. The lights on the unit also auto-dim at night, which is a nice touch when I’m trying to sleep. If you’re looking for a small, quiet, and modern-looking AC that actually works really well, I’d totally recommend this one.
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Reviewed in the United States on August 4, 2025 by Audrina
Choose another AC
Set name: 6000 BTU Lite
The air conditioner showed up without the accessory pack. We went crazy looking for the accessory pack, which it swore was in the box. NOPE, they're OUT of the accessory kit completely, but you won't know unless you send the company an angry message. The unit is LOUD, too. Choose any other air conditioner. Windmill doesn't care about your business or sending a full product kit.
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Reviewed in the United States on June 29, 2026 by I Never Leave Reviews But...