I bought the 18,000 BTU air conditioner in November 2021 at a Black Friday price! I used it all last winter and the summer of 2022!
I have it in a room of about 45 square meters, a living room-kitchen hallway, in an area near the sea with thermal insulation on the house!
It is flawless! Obviously, it is beautiful and the outdoor unit impresses me, as some say it makes noise, but I don't hear it particularly, maybe the installation has an issue!
In terms of electricity consumption, I now pay less than I did with the radiators I had before I bought it, and I have warmth all day (I keep it on all day at 21-22 degrees in the morning and 25 degrees at night).
Also, the dehumidification works perfectly, I operate it every 2-3 days in winter, and then it performs better.
On the unit's screen, you can see the current room temperature.
Also, when I changed internet providers, which means the Wi-Fi changed (passwords, etc.), there was an issue and the app couldn't be reconfigured at all. What I did was open the plastic cover of the unit and remove the USB inside, then put it back in, and it started working perfectly from the beginning!
This is very helpful in general because when you're away for 2-3 days in winter, you can open it through the app and come back to a warm house!
In terms of cooling, it also has excellent performance.
For me, it is one of the best purchases I have made!

From the first minute
it has a problem, it underperforms. They will change a part for me and that is acceptable... but if the problem continues, they need to change another part... and that’s where the difficulties begin, I haven’t used it at all... and they have to dismantle the entire outdoor unit, cut pipes, weld, patch it up, and make it like a machine that’s 10 years old or more... if they don’t change the outdoor unit for me... I will throw it from the third floor and upload videos on all the sites. That’s it... and because I am in this line of work, I know about patching... In the end, I stressed out for nothing... the company will change the outdoor unit... as every proper professional should do!! Now the unit can drop to 700 watts in operation, while other models drop to 350... this is a significant disadvantage for me... it means that in mild weather, for example in heating, I had to turn it off completely. like a conventional air conditioner... besides that, if a machine drops to 350 watts, it means much less noise and a more stable temperature in the room... if I had noticed this, I wouldn’t have chosen it... of course, when it’s 14 degrees outside... it doesn’t need to turn off, it always works but low at 700 watts... this works minimum like an 8, while some others like a 5... this means it stops and starts, it has a 2-degree temperature difference, resulting in the temperature difference being noticeable in practice for a little while, the temperature difference becomes even greater... this feeling is not nice at all... in the sleep curve, there is a setting for a temperature difference of less than 2 degrees, but it doesn’t specify how much... and this is only during sleep hours, which in the menu are specific hours from 9 PM to 9 AM... This option should have been free during all hours, for example, for someone who sleeps during the day due to work... and the option for the temperature difference should be selectable for all hours...
In heating, my parents complain that cold air is blowing... (possibly at startup) of course, the specifications say that this problem is solved with the smart sensor (of course, this is funny and should be standard in all machines and not mentioned as an extra feature) I will monitor it better, even though I felt it too... when I find time because it’s very annoying if it happens... If I had known, I wouldn’t have chosen it... I would have looked for another model from the company... I hear some cracking sounds at random times even when the indoor unit is not working... I hope they stop at some point..... my space is 50 square meters with a side of 9 meters balcony... without insulation... and right now with an external temperature of 16 degrees, the unit is stopped... and this is because it cannot drop to 350 watts in operation....... the indoor unit starts the fan without the element having warmed up... resulting in blowing cold air for quite a while at the beginning... it showed 20 degrees while I was asking for 23 from the moment I turned it on, the fan started...
The outdoor unit was changed, but unfortunately, there is still a small noise in the pipes that is annoying!!!!! ...... If you ask me, I would say next time I would buy a more reputable brand... the extras it has, I don’t know how much it’s worth investing in just those for the purchase... .. First time I haven’t bought something branded but also the last!!! Again here... now that it’s gotten cold.... Sometimes it sounds like the fan is stuck somewhere.... the sound continues like a waterfall.... And I have my mother... every morning.... telling me... It makes a grunting sound like the radiators... it brings cold air etc... I also noticed that when the horizontal louvers are in constant motion, even with the fan off, they move unnecessarily left and right.... I would like the fan to keep spinning continuously, even if it has reached temperature; this way, the temperature in the room would be lower and the temperature in the machine would be closer to reality... you are on the balcony and at 5 meters instead of hearing the unit, you hear the refrigerant in the pipes. At low speed, the fan has a tremor... perhaps because of the long length. I didn't have another air conditioner, but I encountered similar issues in other matters and never noticed anything like this... what a shame... either I am so unlucky or generally this series is terrible and they are betting on appearance... the indoor unit makes noises as if the fan is hitting something... and for some reason, now and then, a cool breeze comes through... every morning I have my mom complaining... I can't sleep, it makes grunting sounds... it blows cold air.... I eat in the kitchen and hear the pipes in the morning from 10 meters away!!! Since December... closed... because we had a fireplace... they came and changed the indoor unit and before that, they had changed the outdoor one... the sound is still heard..... plus the valve makes a buzzing sound... and it doesn't work properly all the time... I mean, it's worse than at the beginning!!!!!!! They told me that the pipes are reaching... of course, with other professionals I spoke to, they told me that there is no such issue because they have done similar installations with more angles and everything was fine... besides that, I had sent all the pipes to the company... the issue is that it has stayed like this and no other technician comes to change the pipes..... truly disappointing... the wifi lags, not such a good application... and it doesn't measure consumption like some other applications... I wouldn't buy anything again... from this company... I have the air conditioner in a 130 square meter house... open space of 55... it just kills in cooling... I started in winter 2023... warmth in a 50 square meter open space and a hallway with a toilet but 20 square meters... degrees 6. Inside at 25, it works loudly outside with a buzzing noise... Sometimes it underperforms... you have to turn it off and on when that happens... especially when the fan is on automatic..... it eats up the settings... basically, for it to work properly, you set it to a temperature automatically and on automatic for the fan... and you don't touch it again... I wouldn't buy it again... 12 12 2023... Many times the valve on the outdoor unit makes noise... Sometimes, while raising the temperature, it gets stuck at a low setting, for example, you set it to 27 and it stays at 25 without raising further... And if you raise it and lower it and then raise it again, it works correctly immediately... something is stuck, maybe the valve or maybe the software... December 2024... Low continuous temperatures... 25 degrees in the room... with difficulty it gives one moment and then stops. The heat is not pleasant...
13 01 2025. 2 degrees for the second day of external temperature... I can't raise it above 21 degrees in my space... Invalid....... I turned on the radiators and the thermostatic head was at 4 when I had 23 degrees there and my body half warm... Now the space doesn't even reach 21 and my body is hot all over... So the climate is just fine

They encountered a problem with two Dark models (12 and 9). The official service replaced the circuit board, but since then it does not produce any warm air beyond one meter, even though it operates at the highest setting. The responsible service technician blamed the technician recommended by the store, saying that he did not ground it during installation. Inventor does not recognize the problem, as the service measurements show that everything is functioning as it should, and they also attributed it to the technician for not grounding it during installation. Be careful where you decide to invest your money.

Update 22/01/2022: On 19-1-22, I asked the same technician who installed it to check it. Inventor sent a new sensor. Today, on 22-1-22, the sensor was installed, but it still malfunctions when set to HEAT. Everything works perfectly in the cold.

Update 11/02/2022: Inventor sent a new circuit board and sensors to the store owner. Today, on 11/2/2022, the same technician who installed it came again. We both noticed a slight improvement, but it still malfunctions.

Update 10-3-2022: Today I was informed that they will not repair or replace the two faulty air conditioners. No time had even passed. A very wrong investment of money.

Final update 6-4-2022: I was looking for a new air conditioner and in my research, I learned that:
In other cases where customers have a new air conditioner that has a problem that was not solved by replacing parts (e.g., installing a new circuit board), either the dealership or the store fully replaces the internal (or external) unit. In my case, neither the dealership nor the store took responsibility.

3/9/2022: I have been reading so many negative comments during this whole period, from others as well! Stay away!
According to the legislation, both the company and the store from which I bought the two air conditioners have engaged in continuous fraud. CAUTION! It is never worth it for someone to enrich themselves by stealing and deceiving.

According to the legislation, when a product is defective without your own fault:

If your product is different from what was expected or broke quickly while using it normally, it is considered a "defective product" and you have a "legal warranty." The seller must provide you with a new product or repair it.

If the seller does not solve the problem, you can sometimes terminate the purchase agreement. This is called "dissolution of the purchase agreement." Then, you must return the product, and you will receive your money back.

When can I terminate the purchase agreement?
If you have given the seller time to repair the product or provide you with a new one, and the problem is not resolved.

If the seller cannot or does not want to repair or replace the product within a certain period of time.

If the seller asks you to pay extra for a repair or a new product, and you do not want that.

If you have repaired the product, and it still does not work properly.

If the product has a significant defect.

If you have agreed that your product will be delivered on a specific date, and the seller does not deliver. (This does not apply to my case, the last one)

What will happen if I cancel the purchase agreement?
If you cancel the purchase agreement, you must return the product. And the seller must refund your money. Sometimes, you may not receive the full amount back. For example, if you were able to use the product for a long time without any issues. Then it may be reasonable for the seller to charge a fee for it. They call it a refund or usage fee.

Sometimes a seller wants to give a coupon, not money. If you don't want it, you can say that you want your money back. Because you are entitled to it!

The review concerns the 24, which covers a living room and kitchen of about 35 sqm and is intended to also cover a hallway in the house, especially for the summer months. The purchase was made after extensive research. The main thing is the 10-year warranty for all parts. The wifi connected immediately and works perfectly. Personally, I don't consider the external unit to be noisy, although in general, I believe that no matter what machine you use, it will never be completely silent. The internal unit is truly quiet. So far, it has been used for heating and it does what it promises. It warms up the house in a few minutes. What I notice is that even if you set the temperature, it goes up by 1.5 degrees and then stops. To start again, it needs to drop 2 degrees from what you have set. The only thing left is to see the reliability over time and the customer service if needed.

Update 26/3/2022
The external unit started making loud noise intermittently, especially on cold days. After contacting the dealership, they concluded that the external unit needed to be replaced without any additional cost, of course. Immediate service and replacement with expedited procedures

The purchase was made on Black Friday, so I only have an opinion on heating and not on cooling. I have the 24,000 BTU model for a living room/kitchen of about 65 square meters. Overall, I am satisfied as it produces enough warmth! The indoor unit displays the room temperature and not the one you set on the air conditioner, so this helps you know the temperature in your space. The issue that has arisen is that within 5 minutes, the temperature sensor goes from 19 to 26 and then drops back to 19 again! (even though when it shows 26, it feels like it's at most 20 degrees) It is likely a problem with the circuit board, as we were informed by the company. They even said they will replace it immediately and install a more modern one, which I hope will solve the problem. It should be noted that the F 11 error code has appeared, so it is likely that the product I received is defective. Despite this, I recommend it for its low consumption and any issues that arise will be resolved by the company...