An integral heat exchanger is provided with a flow guiding fin, so that the compressed air can be uniformly heated in the interior, built in gas water separation device, equipped with stainless steel strainer, water separation is more thoroughly. Simple control system with convenient evaporator gauge, easy installation with the compact design is ready to use with a small footprint, matches the compressor's displacement, saving energyeasy maintenance and improved reliability. Built-in coalescing filter stops contamination by separating water and oil from the compressed air. With Fan cycling ensures stable operation provides excellent liquid removal over all operating conditions.