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But you are cooling and heating gas in one unit.
Indeed. It uses a condensor/evaporation cycle to expel hot air out of the room, and blow cold air into the room, with the two halves of the unit separated by a big bog-off block of polystyrene foam to insulate the two. It makes the ouside a teeny weeny bit warmer, and makes the inside of the room significantly colder.
I'm no air-conditioning expert, and maybe this isn't air-conditioning but is instead a 'cold-making room box'. Either way, if @Howard wants to make a room in his place colder, this will do the job. Albeit it's bogging noisy and probably uses as much electricity as a Pornhub data centre in a coronavirus lockdown.
Look at the plate on the back and see what gas it uses. It will be probably propane which is how fridges cool/freeze food.
Might well be propane. Could be boiled unicorn's piss for all I care. It works, and that's good enough for me!
Well I wouldn't want to put it in a rucksack, but it's on castors. It's definitely possible to move it from one room to another.