At first I was a little unsure if it would cool my bedroom being only 5,000 BTU's but decided to give it a try. Wow, what a pleasant surprise. I never even ran it at the coldest setting and it did a great job. Most nights I'd get up and turn it to a warmer setting. Saved me a lot of money as I would turn off my central system before going to bed and run only this window unit. Then in the morning I would turn on the central system back on and turn this one off. Some of the reviews I had read said they thought it was a bit noisy but it IS a machine so yes it makes noise but I didn't think it was bad at all. I have other LG products and have always been happy with my purchases. This little air conditioner is no exception. It's a well built, reliable product that exceeded my expectations at a very fair and competitive price. I just couldn't imagine finding a better product at a better price.