I had one it was also a 8000Btu unit.It lasted a Month then quit cause there was a leak somewhere and it shut off the presure switch.If you can take it back I would I got mine at Target and had no problem there.I finally ended up getting a Sharp Library quite model.They run good and I think are good machines just rember to take a Water hose and rinse off the Outside condensor coils twice a season.Alot of Folks forget about the outside coils they get cloged with dust,pollen,bugs,etc and the its very hard on the compressor and can begin to slug on ya.Which will ruin it very fast.This was about 4 years ago so they might have gotten better but I know the Sharp unit has a L.g. compressor in it.