The presence of a boiler, today, is an indispensable attribute of each metropolitan apartment.
Water, including hot, is considered an indispensable component of convenience and personal microclimate in every house, following this, in case of any malfunction or breakdown of the boiler, we find ourselves in a state of particular discomfort. Therefore, there is an acute problem of individual hygiene and cleaning their own premises.
A modern flow-through or storage water heater is a fairly reliable and relatively uncomplicated device. But nevertheless, as well as any devices, they can wear out and fail.