If you talk about how to choose a wall-mounted boiler, you should first determine which type you are interested in: single-circuit or dual-circuit. After that it is required to determine the appropriate power of the device. This is not difficult, one square meter of a room with a standard ceiling height requires 100 watts. At the same time, an important condition is that the dwelling does not coexist with unheated rooms. If you want to heat a corner room with two windows, then a square meter should be calculated for 150 watts of power. If you have any doubts about the correctness of the calculations that you made yourself, you can take the help of professional consultants working at the outlet.
If you want to buy a wall-mounted boiler and have already roughly determined the required capacity, then you can consider other issues. Another important point is the performance in terms of hot water supply. Here everything is quite simple. Water from the tap flows at a speed of 400 liters per hour. Characteristics of the boiler assume a minute performance. If there is one point of hot water intake, the indicator of 6.6 liters per minute is enough. When using two water supply points, the appliance should produce hot water at a rate of 13.2 liters per minute or more.
If you are considering a wall-mounted boiler, and with the amount of water at the outlet, everything is clear, then you should decide on the temperature. Since we wash our hands and dishes, we take a shower not in boiling water, but in warm water, then there is no point in buying a device that will heat it strongly. Comfortable for most is a temperature of 40 degrees. Each wall boiler in its characteristics contains information on the temperature range of hot water supply, for example, 35-60 degrees Celsius, as well as the parameter dt: 25 or 30. This number indicates the difference between the incoming cold water and the hot output.
Above, the boiler was described as a double-walled boiler. If we talk about a single-circuit version, it should be noted that it is oriented exclusively for heating tasks. With its help you can not provide a house or apartment with hot water, so it is not so common among consumers. Boilers gas wall double circuit are in demand much more. They are quite comfortable, because they are very easy to attach to the wall, while they do not need a lot of space. Their main advantage is the ability not only to heat the premises, but also provide hot water. Since these solutions are very versatile, they are often chosen for installation in country houses.
At the moment, the most popular among consumers is the boiler company Ferroli, which has become a leader not only in Russia, but also in the world for the production of heating equipment. The characteristics of this brand's products include reliability, high quality, extensive management and customization capabilities. At the same time, the cost of products of this manufacturer is often even lower than that of European analogues.