I love the settings on this. We needed a product that could have ALL light turned off but keep running. The room we have this is(our master bedroom) has the nicest air of our house right now. I got it to help with snoring and allergy issues in our bedroom. It has definitely helped! Our home is older, and i wanted the air to not smell like old house smell in our bedroom. This seems to also keep us cooler(?) in General, i love it!