Trane 2 Ton – 3 Ton 36000 BTU 4TXC Cased Coil 4TXCB004DS3HCA has the all-aluminum Comfort™ coil from Trane. This cased coil unit is tried over time to ensure the least number of leaks. Apart from that, Trane’s 3 Ton 36K BTU coil is made of high-quality premium components that complement other heating and cooling system equipment.