An effective, efficient method of space heating, that is flexible enough to fulfill most industrial heating applications such as factories, warehouses and work shops. The attractively styled, rigid casings are finished in 'Flake Grey' durable epoxy polyester powder coating and are fitted with high quality components which ensure reliable trouble-free operation. The basic unit range consists of four casing sizes (1, 2, 3 and 4), each with the option of four hot water coils (A,B,C and D) and one steam coil (S).