Packed with advanced technology like its variable compressor speed and inverter technology, Mitsubishi provides you with an efficient and the Mitsubishi is one of the quietest air conditioner models in the market.Energy Star rated air conditioner. Helping you to reduce costs and control your indoor air quality, as well as comfort. If your looking for mini-split ductless air conditioner that is durable, quiet, efficient and long-lasting, the Mitsubishi air conditioner is your best bet.