
A Ductless AC Unit for Any Space
From bedrooms to garages, ductless heating and cooling systems provide comfort anywhere it’s needed. No ductwork? Hot or cold spots? Multiple rooms? No problem. Ductless has got you covered. Ductless air conditioner systems come in all shapes and sizes, flexible enough to work however you need them. Learn more about popular ductless applications.
With virtually endless configuration options, a Carrier® ductless AC unit provides flexibility to work where traditional HVAC doesn’t. Long line length between outdoor and indoor components allow for a significant number of placement options. Each unit can be strategically located for enhanced comfort and minimal aesthetic impact. That includes mixing and matching high wall units with ducted, console or cassette units inside, with a single outdoor compressor for multi-zone systems.


How do ductless air conditioners work? Ductless cooling systems use variable-speed inverter compressor technology to efficiently heat and cool your home.
Similar to a traditional split HVAC system, a ductless cooling system includes an outdoor unit and an indoor unit that are connected by copper refrigerant tubing. Refrigerant flowing between the indoor and outdoor units helps pull heat and humidity from inside. A fan in the indoor unit blows the resulting cool air directly into the living area as heat is released outside through a coil in the outdoor unit. The inverter-controlled, variable-speed compressor in a Carrier ductless AC unit outside manages refrigerant flow as conditions change to ensure the most energy-efficient operation.

A ductless heat pump system can work as both a heating and cooling system. It looks and operates exactly like a ductless air conditioner with one major twist – it can reverse its operation to provide both heating and cooling. During the warm, summer months, a ductless heat pump acts as a cooling system and uses refrigerant flowing through the system to pull heat and humidity from indoor air. A fan in the indoor unit delivers the cool air directly into your living space, while heat and humidity are simultaneously released outside through the outdoor unit. During the cool, winter months, a ductless heat pump can reverse the refrigerant flow, pulling heat energy from outdoor air and releasing it inside through the indoor unit. Because even cold air contains some heat energy, a ductless heat pump can be an effective solution for year-round comfort where traditional HVAC isn’t the best choice.

One indoor unit. One outdoor unit. One cool way to keep you comfortable. A Carrier ductless single-zone system is the ideal solution for a room addition, converting an attic or basement, or providing a needed boost to any area your current system struggles to keep cozy.

One outdoor unit can power up to five indoor units for flexible comfort throughout your whole home. Individual comfort settings in up to five separate areas means truly customized heating and cooling. You’ll also enjoy enhanced energy savings when you only heat and cool the areas that are occupied.


In 1902, Willis Carrier created the world’s first modern air conditioner, forever changing indoor life. More than a century later we’re still striving to improve on our founder’s breakthroughs, introducing new ways to more efficiently, more quietly and more conveniently heat and cool your space. Like Ductless heating and cooling systems.

Just Like Rooms, Ductless Systems Come in
All Shapes and Sizes.
With high wall units, low wall consoles, cassettes and even ducted units, Ductless systems offer flexible options for customizing your comfort.