WineZone Split systems. • Can be charged with any of the following 4 refrigerants R-22, NU-22B, MO99 and R-427A • Multiple unit sizes with capacities up to 5000 cu feet for a single unit. • WineZone units have a long standing track record of maintaining optimal humidity levels. • Quiet operation. Ductless split evaporators with decibel levels as low as 45 Db. • Ductless split evaporators require only a single 1/4" hole through the cellar wall. • Commercial grade condensers withstand continuous 110 degree ambient temperatures. • Low ambient control is standard on every unit. • Air handlers provide complete climate control with humidity, dehumidification, and heat options.