The 48PG CENTURION provides gas heating and electric cooling solutions through a single, rooftop unit. The Centurion is highly efficient, easy to maintain, quickly installable, and very reliable. The units are pre-wired and come pre-charged with a Puron® (R-410A) refrigerant, which is eco-friendly by nature. The Centurion, though efficient, is very quiet while functioning and runs on a high performance, belt driven motor.