Abstract: A paint system for an automotive plant circulates various colors of paint, primers and seal coats in individual circulation loops to the many paint booths in an automotive finishing facility. A plate type heat exchanger is used for each circulation loop and the heat exchangers are connected in parallel in a single water circulation loop. The water is delivered to the plate type heat exchangers at a predetermined set point temperature and the plate type heat exchangers are sized to bring the paint to within 2.degree. F. or less of the set point temperature by the close temperature approach of heat exchange.