My Voltage has 3 a/c's. We can run all three and all three areas stay at the temperature we set for it as each area has it's own temp sensor. The front bedroom and main cabin share duct work so when the main a/c is on it's also cooling the bedroom. All three fans work at the same time but the management system switches the compressors on and off as needed. You really don't notice which two compressors are on at the same time. At night we don't like the bedroom a/c working due to the noise. We work the main cabin and garage and since the main cabin is fully ducted it also cools the master bedroom.
