We really like our basement air/heat pump, and have found it to work very well in very hot weather. I have seen one removed several times. It isn't all that difficult, but does require a wheeled cart just the right height, or a fork lift. The cart works very well, and the last one I saw removed the tech didn't even disconnect the wiring. He just pulled it out onto the little cart, and rotated the cart to leave the wiring attached. There was plenty of wiring to allow that to happen. I know from experience, if you pay someone to remove it, the labor just to remove it and put it back will be $300 or more. (Unless you are attached to a Winnebago dealer due to warranty issues, the best way to find a qualified repair place is to check the RVP website for the area where you are. We found some very talented RVP techs in a little RV shop in Branson MO that way.
As Peter indicates, you have only one unit (even though it has two compressors), so you have only one thermostat to control it. Closing vents in one room would be a good way to control temps from one end to the other, but of course the thermostat will operate based on when IT is located rather than where YOU are.
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Paul (KE5LXU) ...was fulltimin', now parttimin'
2022 Coachmen Leprechaun 319MB
towing 2017 Jeep Grand Cherokee Limited