Welcome to the Extreme Series by Whisperkool. Our highest end, professional grade wine cellar cooling unit. Utilising state of the art, high quality components. Because we have years of experience working within the wine cellar industry, they have inspired us to create a design capable of overcoming a range of installation challenges. These challenges limit the performance and longevity of a traditional cooling unit. The Extreme Series system is designed for powerful operation, efficiency, high reliability and longevity. Therefore it has excellent performance in a wide range of working environments.