Profile: Recold offers evaporative heat transfer products. Our HW series fluid coolers offer new, low cost solution for water source heat pump market. Model JC evaporative condensers, model JW fluid coolers and model JT cooling towers are designed and manufactured using the finest components. We are registered to ISO 9001:2000 standard. The Recold RS series is a skid-mounted, stainless steel remote sump tank that includes a cla-val make-up water valve as well as overflow, drain and pump suction connections.