The Winezone Split Air Handler is located outside the wine cellar and the supply and return air is ducted to and from the wine cellar. This wine refrigeration unit looks like a central air-conditioning system and is just as quiet. It comes equipped with electronic controls and digital displays. Options available with these units are humidifiers, dehumidifiers and alarm modules. Properly equipped with the above options, the Winezone Split Air Handler System gives you total control of your wine cellar refrigeration.