Hot? Humid? Everyone and everything wilting around you? Step into your home and be greeted by the cool, clean comfort the Trane XB family of air conditioners provides. The kind of reliable, long-lasting comfort you can expect when a full complement of innovative components is smoothly integrated into one impressive unit. Ruggedly built. Extreme tested. When it comes to home comfort, you can rely on the XB family season after season. Up to 13.25 SEER (Seasonal Energy Efficiency Ratio) rating means efficient operation.