Doucette SLHEs are designed for suction to liquid heat transfer in refrigeration applications. They provide liquid subcooling, increase evaporator capacity and provide protection for system compressors. The SLHE Series is available in standard models for use with every brand of refrigeration system. For custom applications and OEM, Doucette offers our HE Series to meet exact performance requirements. Suction Line Heat Exchangers improve refrigeration system performance and are a proven refrigeration component.