Trane 2-4 Ton 24000-48000 BTUh Downflow/Horizontal/Upflow Cased Coil 4TXCB006DS3HC Trane 2 Ton, 3 Ton, 4 Ton 24000 – 48000 BTUh 4TXC Cased Coil 4TXCB006DS3HC comes with an all-aluminum Comfort™ coil. For maximum efficiency and limited leaks, the 4TXCB006DS3HC 2 – 4 Ton unit with 24000 – 48000 BTU is tried and tested several times. $1,700.00