Water to Air Unit Heaters with Fan
Hot Water Unit Heaters are comprised of a heating coil that is energized by hot water produced by a boiler or some other type of central water heating device. Hung from the ceiling, a fan mounted behind the coil forces air through the hot coil thus drawing heat out of the coil and "throwing" it in to the area where heat is required. These Hot Water Unit Heaters works on the same principle as your car's radiator. As your car engine runs and produces heat, coolant is pumped through the engine to a radiator coil in front of the engine. The fan under the hood blows air through the radiator coil drawing the heat out of the coolant, which helps to dissipate excessive heat from your engine.
Hot Water Type Heating Units - using Hot Water - come in four size sizes with BTUh outputs as follows based on 200-degree hot water temperature.