Single BC

For systems under 126k BTUs and that do not require a Sub-BC.

Production: 2005 - Current

Main BC

Required for systems over 126k BTUs. A Main also allows for a Sub-BC to be installed.

Production: 2006 - Current

Sub BC

Requires the use of a Main BC. Allows for additional ports for up to 50 Indoor units.

Production: 2006 - Current