The article deals with the problem of heat recovery application feasibility in compressor units with oil-flooded screw compressors. It proves that the application of heat recovery can return for reuse up to 66% of compressor unit power. The most appropriate way is to use the compressor unit circuits with parallel water supply to oil and air coolers. Compressor units are designed to use heat exchangers of a lamellar- webbed type as oil and water coolers.