Our Multi-Zone Custom Combination Builder is a unique tool that helps you design a personalized HVAC system. It allows you to select an outdoor condenser and pair it with various indoor heads like Wall Mounts or Ceiling Cassettes. This ensures that the total BTU capacity of your heads matches the outdoor unit perfectly. It’s the easiest way to plan a whole-home Multi-Zone project. You can mix and match different series, like the Sophia and Olivia Midnight, for the ultimate custom look. The builder only shows compatible options, making the process foolproof for homeowners and pros alike. It’s one of the most popular features on our site. Start designing your dream system today with our interactive tool.