Water heating is most common in many countries, however, not only ordinary water, but also other liquids can be used as a coolant. This type of heating of premises is also called traditional. Its essence lies in the fact that the liquid heated to the desired temperature is transmitted through the pipeline to all rooms, there, through metal batteries, gives part of its heat, thereby heating the rooms and making the stay in it more comfortable. Traditional heating has a number of advantages. This type of heating is more economical than air, this type of heating has a high level of heat capacity, thanks to the traditional type, a comfortable mode in rooms is created.