Infinity Series Systems:

Up to 21 SEER, Infinity Control for maximum performance and enhanced diagnostics, WeatherArmor System, Puron refrigerant.

Performance/Comfort Series Systems:

Up to 18 SEER, WeatherArmor Protection System, Puron refrigerant.

Comfort/Base Series Systems:

Up to 16.5 SEER, Wire coil guard, Puron refrigerant.

Thermostats:

Infinity Control is the ultimate choice for home comfort, available with an Infinity Series System.
Other series include the Edge, ComfortZone II, and Comfort.