Windmill 6,000 BTU Window Air Conditioner, Cools up to 250 sq ft

I own several Midea U shape 8k btu units. They are truly AC/DC Inverter air conditioners. This 6K BTU; Windmill unit isn’t an inverter type AC. The fan speed rpm’s, do ramp up and down at a fixed rate, not truly variable. The compressor is NOT variable speed, it is on and off. Aesthetically, the unit looks great. The noise level is definitely louder than a full inverter type ac. I purchased this windmill unit for my kitchen window. Aesthetically it looks great, exactly what I wanted. It does keep the 150 square-foot area comfortable, just a bit noisy. The directed airflow output being on top instead of in front was also another key reason I bought this unit. Overall, it’s a decent unit and does exactly what I need for this space. Has a great look, distributes the air overhead evenly, with no visible vents. Aesthetics is definitely this units strength. Cons: A little noisy and NOT AC/DC inverter technology type ac. Would I buy this unit again? For this particular application, No! GET THE 8k! It’s true inverter technology. Next year, I’ll be replacing this unit with an 8k. I’ll give Windmill another try with a full blown smart inverter technology unit.

The unit we had lasted many years but it went out on a day when it was over 100 degrees. I ordered this one since it was the highest rated one that could be delivered overnight. I was not disappointed! This unit surprised me with how cold it gets. Easy install and gets super cold really fast. I highly recommend this unit. I am using it in our Florida room that is about 10' x 17'.

Mine’s an attic window install, and it does its job nicely, without much issues and noise. When the attic cools down, the cold air starts tumbling down through the staircase, cooling the lower room. App control is a plus and I can change the settings, turn it on/off and check power consumption. I have tested its operation with an Ecoflow River 2 Pro solar battery / inverter. This a/c unit can work even during a power outage or with solar panels using a proper rated inverter. Forget about temperature accuracy with the Eco mode, which I use when no one is in the room. The filter cleaning reminder feature is a gimmick and there should be a way to disable it. My filter remains clean, but the unit thinks it’s dirty. Need to have an adjustable timing on that. The filter cover is designed in a very accessible manner with magnets and all. The remote is nicely labeled but there is no proper place on the unit to drop it in. I liked the cut-to-size insulation panels, the adjustable sliders that fill until the window ends, and the semi-permanent style installation on a vinyl window. The outside grill is a nice touch and protects the condenser from damage. My only nit is the constant compressor cycling with thermostat engagements. There is no variable compressor in the unit. At this price-point this is a requirement and is a big miss by the company.

Works great, looks great , easy to install. Has app so you can control it away from home. The only downside is the price is almost twice as high as same size unit from BJ'S. Sometimes you get what you pay for, time will tell.

All windows AC, regardless of brand, perform one function; cool down a space/room. For this review, I am putting installation and operations aside. I am only focusing on the most important aspect to me, the noise level. Based upon the many positive reviews, I purchased a Windmill Air Conditioner Smart Home AC Unit 6000 BTU for a small home office (12ft x10ft). The test setup: Sound measuring device = Samsung Galaxy S6 & Sound Meter app by Abc Apps. Table setup at 8ft directly in front and at the same height as AC. Thermometer = DIGI-SENSE Traceable Wall-Mount Digital Clock/Calendar x2 I began the test by making the room as quest as possible. Everything was shutdown, windows and doors closed and all outside noise within my control were also turned OFF. I measured the room noise level, then set the AC unit to Cool, Fan Low, Fan Medium and Fan High. Results are: OFF (room dB) = 21 Fan Low dB = 49 Fan Med dB = 51 Fan Hi dB = 53 I was surprised and somewhat disappointed to say the least. This was loud. From all the reviews, I thought the noise level should be lower. Windmill Air advertised this to be quiet. It’s louder than my 15 yr. old Whirlpool. Definitely very loud for sleeping. It’s in the office, but I will have to shut it down for virtual meetings or calls. Another note: The temperature gauge is consistently off by about 8-10 degrees. Its reading 63 degrees while the room thermometer is reading 73. This is occurring all the time. The unit shuts down while the room is still warm. My room thermometers are Digi Sense 08610-26 Traceable Wall-Mount Digital Clock/Calendar NIST which are calibrated and compliant for ISO, FDA, and cGMP manufacturing environments. I’m fairly confident that the Windmill Air AC’s temperature control is in-accurate. I have two different brand AC units in the bedrooms which I will put into the same test. More to come…. UPDATE: I have to give a shout out to Windmill Air's customer service. They were very supportive and we went over several debug methods. 5 stars to customer service. The rattling noise was still there after debugging and in the end, they sent me a replacement unit. I put it through the same test as described above. While the rattling noise was gone with the new AC, the noise level itself was not as quiet as expected. The decibels were still the same. I did a comparison with my other two ACs: Midea 8000 BTU U-Shaped and a 15 yr Whirlpool ~1800 BTU. The results are: OFF (room dB) Fan Low dB Fan Med dB Fan Hi dB Windmill Air 6000 BTU 21 49 51 53 Midea 8000 BTU U-Shaped 21 32 35 41 Whirlpool 21 42 49 49 The Midea was truly quiet coming in at 32dBs on low fan setting. Perfect for a bedroom. The Windmill Air is ideally a small office AC and the noise level is acceptable for that purpose. I have upgraded my review to 3 stars for the level of customer service.