Has anyone used the wall-hung boiler in wiesmann? How's it going? Give some advice. .

The quality of imported viessmann is ok, but it should be divided into regions. In some areas, after-sales service is relatively in place, while in some areas, after-sales service is poor. In addition, the water pressure in Germany is almost fixed. On our side, some communities have high water pressure, while others have low water pressure. When a community with low water pressure takes a bath with wiesmann, it will be hot and cold. A good product should be coordinated by a good installation company.