Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Shiver - Sweat Cycles

I bought this AC because of its power and energy efficiency, but those two qualities are exactly what make me hate it now. When it's on a cooling cycle, it noisily blasts arctic air until it hits the targeted temperature, then it completely shuts off! No fan, no blower, just off. Silence. Until the room warms up and the unit roars back to life. And it is LOUD!I'm not sure what the actual temperature spread is between cycles, but, as this unit is in my bedroom, I spend the night alternately sweating when it's off, and shivering when it's on. Add in the huge noise differential between when it's running and when it's not, and it adds up to a very unpleasant night. I despise this AC.