Features and benefits. Designed specifically for wine storage. The whisperKOOL system is a specialized refrigeration unit designed for one purpose only: to maintain the optimal temperature and humidity levels conducive to the proper aging of fine wines. . Humidity control. The cooling unit is designed to maintain relative humidity at 50-70%. The proper Humidity level is managed through the design and engineering of the unit. There are no separate switches for controlling humidity Quiet state of art operation. Years of experience with our self contained cooling units has resulted in a totally new design which accounts for a number of environmental conditions which are unique to wine cellars. We have accounted for these variables and incorporated the use of state of the art components, which offer ultra quiet and sophisticated operations while keeping the basic concept rather simple. Indoor and outdoor condenser installations. This system offers the option of installing the condenser unit indoors or outdoors. This will allow homebuilders and architects to incorporate this system with the utmost ease with regard to installation and space requirements. Temperature differential. The whisperKOOL split system is designed with a 55-degree temperature differential. This means the unit can operate correctly even if the ambient temperature outside (or where ever the condenser unit is mounted even) in 110 degree heat. This is a significant improvement over most cooling units designed for wine storage. The system includes both the evaporator and condenser units. An exterior mounted condenser package option is available for outdoor installations. SPECIAL SUMMER OFFER - FREE SHIPPING ON ALL WHISPERKOOL'S