These air conditioners provide a fantastic way to cool a space without having to use ductwork. The air conditioners are mounted on the wall or ceiling of any room you need to cool. They work by sucking up moisture and heat in the blower/evaporator, which then dumps them out. These units provide precise temperature controls and have a programmable design that allows them to work with multiple indoor units using one outdoor unit. 1. Energy-efficient Ductless systems can reduce energy cost...