How Do Ductless Air Conditioners Work?

Before installing a new ductless air conditioner or switching out your existing system, it’s important to understand how they work.

Simply defined, ductless air conditioning systems (also known as mini-splits) link individual room units to an outdoor compressor. The indoor unit contains evaporator coils cooled with refrigerant. Warm air from the room blows over and is absorbed by the coils. From there, the refrigerant transfers all that inside heat to the outdoor unit.

Instead of a central indoor unit connected by long lengths of ductwork transporting warm and cool air back and forth, a mini-split system places small units directly in each room, which pull in warm air and send it back out as cold air. A popular alternative to traditional air conditioners, mini-splits involve much less intrusive installation, blend in better with the room and are quieter and very energy efficient.

The biggest advantage of mini-split systems over traditional central air options is ease of installation. A home without existing ductwork requires install of new, and that’s an expensive and complicated endeavor. There are a host of other advantages as well, including:

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🔵 Integrated zoning; you get full control of each room’s temperature.

🔵 Mini-splits operate with heat pumps and can heat a room up as well as cool it down.

🔵 Energy-friendly mini-split systems don’t lose air through leaks in ducts. 20-30 percent of energy is lost through ductwork.

🔵 Inverter compressors adjust to the system’s needs instead of shutting down the entire system.

🔵 Inconspicuous presence in a room, and quiet.

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