A ductless AC system, also known as a ductless mini-split system, is an air conditioning system that doesn’t require ductwork to distribute cool air throughout a building. Instead, the system consists of an outdoor unit that is connected to one or more indoor units by a conduit that contains power cables, refrigerant lines, and a condensate drain.

Ductless AC systems are also known for their ease of installation and relatively low maintenance requirements, making them a popular choice for homeowners looking to improve the comfort in certain rooms around the house.