A comment
My parents use the Beretta 11i column, I can say right away that it works flawlessly. In the area where the parents live, they constantly turn off the light and it is not advisable to install a conventional double-circuit boiler, which is why they put a separate boiler, a separate column.
Now I’ll tell you more about the column. The draft in the column is natural, there is a chimney. The dimensions of the gas column are not quite large, it looks compact enough, does not protrude too far from the wall, in principle, does not interfere and the eyes are not callous.
It is made of metal, a heat exchanger is made of copper, so it will last a long time.
The column operates in automatic mode, that is, it automatically turns on immediately from the moment hot water is supplied. Set fire to electric. For a shower, the water productivity is 11 liters per minute, but if you need to get a bath, then there are about 6-5 liters.
pros
Quality, performance, simplicity, reliable.