I have had this stove for 15 years continuously. It is a unique stove that is traditionally produced and not randomly made. In order for it to function properly and last for decades, you need to follow certain steps:
1) It does not require electricity to operate, so you are covered during power outages and won't be left without heating. It is also suitable for situations like war, such as houses without electricity, basements, warehouses, shelters, etc.
2) To avoid odors, you should light and extinguish it outside the heating area, and you will be free from any smells. This is a process that you know from the beginning when you purchase it. If you follow this, your space will never smell.
3) Never use loose heating oil in it, always use double-filtered kerosene unless you know that the loose oil you are buying is clean. This is important for the stove to perform perfectly, prevent the wick and its tank from accumulating deposits, and of course, to avoid smoking (which can happen with adulterated oil). So, I recommend kerosene or the EKO brand (part of the ELPE group), which produces very good and clean kerosene for stoves since the kerosene is purchased from there :)
4) To have low fuel consumption, during ignition, you should let it burn at the highest setting for a maximum of ten minutes, adjusting the wick to the maximum flow, and then lower it to the lowest setting and let it work there for as many hours as you want.
5) Due to the strong heating with a sudden temperature difference between the inside and outside, usually, you will see a lot of moisture and water running down the windows (condensation on the windows). This happens because of the phenomenon I described. So, you should always leave a window or door slightly open (if you have proper ventilation) to prevent this phenomenon and allow fresh oxygen, which is necessary for the stove's combustion. Don't worry about losing heat from the room because the stove operates continuously (it doesn't turn off when it reaches a certain temperature) with a constant flow of kerosene combustion. So, whether you close or don't close the window, it has nothing to do with fuel economy; it will burn what it needs. Just remember to have a slightly open window or door.
6) This stove produces powerful heating compared to any other oil stove on the market. So, it's good to let it burn completely the last time you use it at the end of the heating season, then thoroughly clean the combustion chamber so that it is ready for the next year. I also recommend changing the wick every year, which costs 10-15 euros. But if you clean it during the heating season, you won't need to change the wick every year; it will last for another year. However, it is good to change the wick every two years at most.
7) Some people complain about this particular stove because obviously they don't do any of the above, and rightfully so, they complain because they act contrary to their own irresponsibility in following certain rules. If you follow the above, it is a stove that will be passed down as an inheritance to future generations. It is not a coincidence that it is produced this way since the Second World War by the Japanese; they know more than us!