I had a couple of older window air conditioners that were considerably heavier. This one is lighter and does a much better job. I have it in one window on the second floor with a fan set toward the downstairs. For me, it is enough cooling for the whole house. I like that at night I can put it on low fan and can barely hear it when it comes on. This is definitely not noisy. I just may buy a second one for the downstairs.