Pro: Elegant (somewhat quiet) MachineCon: Must pull hot air from outside in order to function.The problem with these single hose portables is they cool the super high temp condenser coils with air from the room and then spit it out through a window via the hose. Problem with that: Where does the air come from to REPLACE the air going out the hose? FROM THE HOT AIR OUTSIDE! (Through cracks and crevices around windows and doors, if it's an air tight room the a/c will overheat and shut off.)Ridiculous, it's constantly fighting a losing battle. You'll need 2x the BTUs to do what a window unit does. And just wait till you get your electric bill!Get a window unit instead. If you don't have a appropriate window you can have a 'through the wall' unit installed or look into 'mini-splits' or go all out and get central air.Good luck and stay cool,J