Central AC System GuideSystems index
Central AC Types: Split-System, Packaged, and Staged
Compare central air conditioning families: split-system and packaged units, and single-stage, two-stage, and variable-speed systems, with how each cools and fits your home.
System type
Split-System Central AC
The most common central AC: an outdoor condenser matched to an indoor coil, and why the coil match matters.
System typePackaged Central AC
All-in-one packaged units for homes without indoor equipment space, and how they connect to ductwork.
System typeSingle-Stage Central AC
Full-on or full-off cooling: the budget tier, its comfort trade-offs, and where it fits.
System typeTwo-Stage and Variable-Speed AC
Modulating compressors for steadier temperatures and humidity control, and the efficiency and cost trade-offs.