A ductless mini-split air conditioning system includes an indoor evaporator unit connected to an outdoor condenser by a refrigerant line set. These systems eliminate noise, wiring, and ductwork from the living space and present an alternative to window-mounted units and ducted central air systems.
Most mini-split systems can provide cooling and heating. Mini-split systems can be installed in single-zone or multi-zone applications. Single-zone systems consist of one indoor unit and one outdoor condenser. Multi-zone systems still use a single outdoor condenser, but are made up of 2 to 8 indoor units that act independently.
Wall-mounted indoor units, which are the most common, come with mounting brackets and a wireless remote control. Ceiling models come in several styles including recessed and concealed.
You will need a refrigerant line-set for each indoor unit that you install. Line-sets connect indoor and outdoor units, running R410-A refrigerant. Most mini-split units are pre-charged with enough refrigerant for 25-foot runs. Longer distances require additional refrigerant.
Be sure to hire a licensed HVAC technician to maintain valid warranty and ensure proper system operation. Mini-splits look simple but they require highly-technical installations, including electrical work to hard-wire the outdoor unit to a dedicated circuit breaker. Indoor units receive their power from the condenser using properly sized connecting cables and need no indoor plugs or wires.
SupplyHouse.com’s convenient mini-split calculator will help you select the appropriate units for your application based on factors including climate, square footage, and insulation quality.
Want to learn more about mini-splits? Click here to read more about Mini-Splits and their History.