Self-contained cooling systems are ready for easy installation and use. They vent to the near surrounding space and require no drain. Self-contained cooling systems are designed to provide a subtle temperature between 50~65 °F for a properly insulated wine cellar. The humidity range of the refrigerated space can be maintained within 50~75% RH. These temperature and humidity ranges are optimized for long term storage of wine. Temperature is controlled and humidity is adjusted using our patented technology. Multiple options of rear or top or ducted exhaust are convenient for various installations. There are cabinet cooling systems with optimized bottom cold air supply and room cooling systems with optimized horizontal cold air supply. We offer SLIM, HTD, CD and HZD series.