My Dad has a similar one. I wanted one with the clean air ionizer. Hoping it helps in NYC pollution. Haven't used much. Also hoping that plastic insides mean less rust. Air Conditioner above is a fossil that leaks profusely, continuously, causing rust and I imagine mold. It's slightly smaller than they say I need, 6 instead of 8 BTU but my ceilings are low. My Dad's cools way more space than recommended.  I wish the vents were wider so I can clean more often easily until I actually clean it end of season. So far I love this thing, not usually what I say about air conditioners. Also it's so so so quiet. I wasn't expecting that at all. I'm accustomed to loud stuff and was fully prepared for that kind of thing. What a pleasant surprise . Cant' hear a thing.