Reminds me of a communications room for an older supermarket remodeled into a furniture store, where the communications racks were built in an old meat locker,...with the AC units and condensers installed inside the meat locker. They could have at least used the meat locker refrigerant system, but at least 2/3 of their power consumption was spent on that internal window unit.
At my first job in the mid 80’s we had a server room that needed extra cooling so they inserted a window unit in the wall and exited the hot sticky air into the room with the consoles where we worked. Then they bumped up our flow from the building air so we would be alternately hot and sticky or freezing, but it was always noisy so they bought us hearing protectors. I still have that pair.