This configuration, the Bravo Milano Series 4 Zone 42k (12k+12k+12k+18k), is designed for large households. It is a powerful option in our Quad-Zone collection. With three 12k units and one 18k unit, it can cool a whole floor easily. Each air handler is part of the UFC Multi-Zone line for mounting flexibility. This system allows you to turn off units in unoccupied rooms to save money. It represents the pinnacle of residential zoning technology.