Air water heaters are used to heat large-size spaces as production halls, warehouses, stores, service, garages ect. They have to be connected to central heating system. The heating coil is reaching a high temperature and the axial fan diffuses the hot air in the room. Because of that we can gain the higher temperature in small time. Air water heaters with steel casing are supplied in 4 types with power capacity 20 kW, 31 kW, 49 kW, 66 kW.