Split system installation involves connecting an outdoor condenser unit to an indoor air handler using refrigerant line sets and electrical cables, creating a two-component HVAC system. This configuration separates cooling and heating components, allowing flexibility in indoor unit placement. Split systems represent the most common residential HVAC installation type in North America.
Technical Specifications
Residential split systems range from 1.5 to 5 tons capacity. Refrigerant line sets typically span 25-75 feet with proper sizing for capacity and distance. Installation requires 208-240V, 30-60 amp electrical service. Modern systems achieve SEER2 ratings of 13-22 depending on efficiency tier. Line set installation must include proper insulation (1/2-inch minimum), evacuation to 500 microns, and charge verification using subcooling or superheat methods.
Installation Process
Professional installation includes condensing unit placement on level pads, indoor unit mounting in attic or utility areas, line set routing through walls and cavities, electrical connections, and system commissioning. Ductwork must meet ACCA Manual D specifications for proper airflow. Professional installers typically complete residential split system installations in 8-16 hours.
Advantages
Split systems offer high efficiency, quiet operation, and flexible indoor unit placement. They support ducted or ductless configurations for retrofit applications.