The body of the Thermo series water heater consists of a steel tank insulated with environmentally friendly polyurethane foam. The inner tank has a special glass-porcelain coating that reliably protects the inner surface from chemical corrosion. A tubular electric heater (TEN) with a capacity of 2.5 kW is installed on a removable flange, which provides high-speed heating of water, a magnesium anode is designed to neutralize the effect of electrochemical corrosion on the inner tank.