Hello everyone, I am sharing my experience of Mitsubishi Air Conditioner with you, which is just awesome. We bought this air conditioner 3 years ago and it works properly even now. Its ductless cooling system and heating systems are energy efficient, environmental friendly and completely customizable. Its ductless system uses a series of air filters, that remove allergens, bacteria and dust from the air inside the room. I am very satisfied with this product and I suggest you to switch to Mitsubishi Air Conditioner.