It cools the room, but the 14000 btu advertised is actually 7k as listed on the shipping container. It's a little hvy so used a dolly to move it upstairs. Easy to install as long as all the pieces are there. I ordered the 12k ac and it was missing part of the window kit as well as one peice broken during shipment. Called Customer Service and they responded quickly, that will keep me a customer for years to come!