The C96 Series features a two-stage gas valve and fixed or variable speed energy efficient ECM motor. Continental’s two-stage furnance reduces temperature swings within your home, maintaining a consistent and comfortable setting. The C96 Series furnace will operate on low fire for greater efficiency and comfort for most of the heating season. On colder days, the furnace automatically switches to the second stage, producing more heat to satisfy demand. This effective two stage system is like having two furnaces in one. With your Continental C96 Series furnace, you’ll enjoy the winter seasons for years to come.