Mini split air conditioners are units that lend themselves to additions and large master bedrooms. If you ever have a situation where you would rather have central air, but cannot run the ductwork, or your original unit is too small. You can have one of these units. They are the quietest, most efficient units that money can buy, and they are worth every dime! Some people do not think that they look traditional, but these units are easy to ignore when they are this quiet!