The MB6 heat exchanger reduces the heating capacity to as low as 30%* allowing you to further reduce your energy costs. You can also manipulate the temperature if the room is smaller or larger. The MB6 series also offers the choice of Navigator Wall Mounted Controller or the Navigator Radio Frequency (RF) Remote Controller. Both are fully programmable for automatic operation and capable of running up to 4 integrated zones. You can also operate your MB6 heater with the optional Bonaire My Climate® Wi-Fi® control.