Because it only has single stage heating the trane xb90 has the advantage of lesser bulk. With a 92 afue rating the xb90 qualifies as a high efficiency furnace. Xl90 2 stage gas furnace.
Trane Xb90 Tuc1b060 Gas Furnace Locker Storage Board Design Gas Furnace
Xb90 Gas Furnace The Single Stage Xb90 Is Designed To Provide Dependable Performance And Efficiency S Home Heating Systems High Efficiency Furnace Gas Furnace
Trane Xb90 Tuc1b060 Gas Furnace Locker Storage Board Design Gas Furnace