The air conditioner is from the company Midea. Inventor put their name on it and provides the warranty. Midea is a good company and I hope that Inventor is also okay with the warranty.

+ It was mainly purchased for the 10-year warranty and a 24,000 BTU unit was installed for cooling 70 square meters. I was ready to buy the toyotomi izuru but I didn't like that the warranty was only 2 years for electronics and 5 years for the compressor.

+ The outdoor unit was installed on the terrace so that I wouldn't have any noise issues, but in the end, it didn't make much noise anyway. If you have any noise issues, it's usually the compressor touching something in the outdoor unit, so take a look here: [link provided]. The fan of the outdoor unit is made of plastic, so it won't make noise due to being misaligned, but it might come loose. It takes 5 minutes to fix it.

- I am satisfied with the heat it produces, but I would have liked the indoor unit to have a slightly quieter fan. During the day, it's fine, but at night when the noise level drops, it stands out. (-0.5 star)

- The filters that come with the device are not really useful. I thought they were samples based on their size (yellow, blue, black in the photo). They are just for marketing purposes, and unfortunately, this kind of misleading marketing is unacceptable. If you are thinking of buying it because it has filters, stay away! (-1 star)

- The app is also from Midea, so it might work without any changes with their air conditioners. It's nothing special. Nevertheless, the app can open/close it remotely, which is something I wanted. Like with all other smart devices, I want an API to be able to control it with my own application because after 5-7 years when the manufacturer shuts down the servers, this feature will become useless. Also, it is currently a backdoor in my network, as someone malicious could gain access to the servers and use the AC to find and exploit vulnerable devices in home networks or create a blackout. Google: "Botnet of smart air conditioners and water heaters could bring down the power grid"

+ The 24,000 BTU unit requires a 3x2.5 wire from the electrical panel and a 16A fuse, so ask if the technician who will come will install it for you or if you need to hire an electrician. The installation cost me 120€ + 30€ VAT for 4 meters of piping and 40€ for the electrical wire. In other words, 190€. The 18,000 BTU unit does not require a wire from the panel, so you can save the 40€ if you don't need the extra 9,000 BTU.

+ The power consumption at full load is approximately 2300W, and when it reaches the desired temperature, it drops to 650W. The consumption depends on the temperature difference; if it's 40°C outside and you have it set to 20°C, it will struggle and consume around 2000W+. On the contrary, if it's 30°C outside and you have it set to 23°C, it will reach the lower consumption after a while, around 650W.

If you are between 12,000 BTU and 18,000 BTU, go for the 18,000 BTU unit as it has a larger outdoor unit and is therefore more efficient for the same cooling. It will pay off in terms of electricity consumption over time. The 24,000 BTU and 18,000 BTU units have the same outdoor unit, but the 24,000 BTU unit has a more powerful compressor. Unfortunately, because they have the same outdoor unit, the 24,000 BTU unit is less efficient when running at full capacity. It certainly has the advantage that it can cool more, while consuming the same as the 18, when it is under the same thermal load. So if you have 50+ square meters, you must go for the 24 or install it above a unit, otherwise, for under 50, buy the 18.

+ Insist on having them install a 2.5-meter or longer pipe. It is explicitly stated in the installation manual, and they could refuse to provide warranty because it was not installed correctly. If you place it close, for example, 2 meters away, they will mess it up, they know what they should do, they just try to take those extra 7-8 euros from you.

+ For distances over 5 meters, the technician should add R32 liquid, it is also stated in the installation manual, do not accept the "it works just fine like this" or "I have been a refrigeration technician for so many years...". Give them the manual and tell them that it says here what they should do.

+ For proper vacuuming, it requires a 2-stage vacuum pump and a quarter with 45 minutes to reach 500 microns (= 0.67 millibar). The quick 2-minute vacuum with only one stage pump and 2 minutes for leak testing is not a serious job. The humidity and oxygen that will remain inside will cause you problems, so when you call, ask what equipment they will use. I had to go through 8 technicians until I found one who knew, so there are others out there, but it requires a little searching.
Regarding this, it should be mentioned that the absolutely correct procedure is to pull a vacuum, fill the system with nitrogen, and pull a vacuum again so that no air or moisture remains inside. Unfortunately, I have not found a technician who can do this.

+ Do not forget to ask for an installation certificate (from a certified technician). It is needed for the warranty. Something will break in the next decade.

One year later and my experience is... Take it without fear! I can't understand why it might not work for someone. At least until now, I have been satisfied both in cooling and heating during the winter, with slightly better results in cooling where the entire living room becomes cool in just 10 minutes with the 1st or 2nd level rarely. The Wifi application works flawlessly, as you can connect and turn it on before returning home and have the perfect climate. I think it's all about the settings you make, the insulation of the space, and the correct estimation of the BTUs you choose for your space. I believe that if I had bought the 18, for example, it wouldn't have ultimately covered me the way I wanted. It was installed in a space of about 50-60 square meters, a unified living-dining room with an open kitchen next to it. The outdoor unit seemed a bit big to me, but we're talking about a 24, and it's also a bit noisy due to the fan. If you leave the window slightly open, you can hear a hum, but it's not bothersome at all once you close it, so we're probably talking about reasonable noise levels for these BTUs.

Purchase 08/02/21-24000 BTU at €840. Installed in a well-insulated 110 sqm apartment where the bathrooms and rooms are separated by a sliding door from the living room-kitchen. The indoor unit is right across from this door. By closing it, it turns 55 square meters into an oven in 10 minutes at 27 degrees Celsius on the maximum fan setting. Then, on the auto mode, I open the door and it heats up the rest of the house satisfactorily without turning it into an oven unless I leave it on the maximum setting for an hour or so. I am puzzled by the comments about Boeing 737, Airbus 321, etc., as it is not at all noisy in my case. At first, I was curious and stood under the outdoor unit to see what I would hear, frightened by the comments... The noise is minimal, with the silence mode, it is almost inaudible. Wi-Fi installation is easy by following the steps and knowing the codes unless you are elderly and not good with technology. The app didn't work for one day. The other 30 days of the month were fine. Note that the wall where it was installed was full of holes from other units from other tenants, but there was no noise problem. The plastic parts creaked in the first week, sporadically due to sudden temperature changes. Register electronically on the manufacturer's website to get an additional 5 years of warranty, reaching a total of 10 years.

I have a very large house with poor layout. As it was 2 separate units, we connected them. We initially started with a 24,000 BTU unit in the living room to see if it does the job. In the end, it is perfect!!! I'm only talking about cooling for now. In the living room, you immediately notice the difference as soon as I turn it on. Even at low speed 1, it is cool. I set it to 24-26 when it gets very cold. The coolness reaches the kitchen and the opposite room and the hallway in between. In the other two children's rooms, even though they are sunny all day, they also cool down. You can tell. I am very satisfied. I didn't even connect the Wi-Fi myself because we are in a village and our internet is bad anyway. We don't have good signal.

I come back to talk about heating. Unfortunately, I was not satisfied at all. We have it in the living room on the left side. The heat doesn't even reach the right side. (There is a fireplace in between as a divider) You can tell the difference. In the kitchen, which is opposite it, it's okay. Only there it warms up. Further on, not even a little. Not even in the room that is also opposite, the cold doesn't break. What a shame.... While the coolness goes throughout the whole house.

You can't call it quiet. Initially, as soon as you turn it on, it starts making cracking noises, as if the plastic is contracting and expanding, for about 5 minutes. Then it stops and does it sporadically throughout the day. At first, I thought it was normal because it's new. After 5 months, it does the same thing every time and it's very annoying.

Also, in winter when you turn it on, it blows cold and strong air until it warms up, even though I have the low air power setting. After a while, the power decreases and it heats up well. Normally, it shouldn't blow for 2-3 minutes until it warms up, like many air conditioners I have. But still, you can't call it quiet.

The APP is also annoying. EVERY time I pick up my phone to change something, it shows me the classic legal text and I have to press "I agree." EVERY TIME!!! As if that wasn't enough, one out of five times it disconnects and requires reconnection with a password that it never remembers. It is also not compatible with Google Assistant and Amazon Alexa for those interested.

Overall, every time, I consider opening it up because it starts with strong cold and noisy air, and in addition, cracking noises and all the actions I have to do in the app as I mentioned before.

As for the installation, it requires power from the external unit. I am not satisfied at all. Look for something else...