It is rapidly generates hot water in a small heat transfer volume smaller than conventional units and produces hot water rapidly because of large heat transfer surface. It includes replaceable straight tubes heating coil 
In general, the water to be heated is not treated of softened before entering to the unit. After a while, tubes are covered with limestones and thus heat transfer efficiency decreases. In this case, the concerned tubes need to be cleaned or replaced. Our unit makes possible this opportunity and provides long-term service efficiently and economically. 

It is hygienic and resistant to corrosion 
Optionally, it is made of stainless steel or a fully galvanized sheet. Thus, there is no corrosion risk. Forming of any bacteria is avoided since the temperature is above 60°C throughout the unit. Some kind of microbes exists and increase rapidly at temperatures 30-55 °C and cause ligonier  disease with death effect. World Health organization recommends to keep water temperature at least 60°C or more. It is possible to adjust this temperature by mixing it with cold water. 

It is economic and efficient in terms of energy consumption since it has smaller volumes comparing conventional units and is covered with isolation material, heat losses are very low 
Different type of heating fluids can be used central heating hot water, superheated water, steam and superheated thermal oil can be used as the heating fluid.