Trane 3 Ton 16 SEER A/C 4TTR4037L1000A unit goes hand-in-hand with the efficiency goals of the system, and in order to have become a part of the system, the unit would have to bring in some of its own features. And, just as expected from a Trane unit, the A/C has been constructed with durability-tested for stable and robust construction. Moreover, in accordance with the efficiency standards of the whole system, the A/C produces cooler air more economically than its competitors. Finally, as an attractive add-on, the A/C is compatible with Trane CleanEffects™ that will aid the system’s ability in giving you cleaner air free of irritants and pollutants, giving you a more comfortable home to live in.