Great machine.  Cools our bedroom nicely.  The problem: our bedroom outlets are on a 15 amp circuit and this unit pulls 11 amps.  We are older, so we also have oxygen concentrators and a C-pap.  In the middle of the night, the breaker often flips, shutting down all our nighttime machines.  We've hired an electrician to rewire the room with a 20 amp breaker with new wiring that can handle the extra load, but had I purchases a machine that pulls less amperage, that too would have fix the situation.  This is why I gave it 4 stars.  If you have the power, the machine works extremely well.