What’s the best way to set the 3 Ac units in a toy hauler? I have living and bedroom set at 73 garage is set at 80. Does this make any units work more. I do t feel I should cool garage when it’s not being used. We do have it closed off by a door to kitchen. When set to 75 it doesn’t shut off. I will be blacking out wi does and when patio is down I’ll have blackout curtains but when not in use should I I run ac an open up kitchen door ?