Sixteen years ago I bought a Frigidaire 15,100 air conditioner for my sister.  Recently, my window A/C stopped working so I replaced it with my sister's (which still works perfectly!), and bought her this new one.  The model number and some controls are different, but the specs are the same.  So far, works as well as it's predecessor.  Would definitely recommend. [This review was collected as part of a promotion.]