What would be the best matched two speed furnace (AHU) for the Trane XL15i in a 3 ton split.
1560 sq ft slab in Tulsa Ok.
Easy huh? :-)
To get 15 SEER from that thing you'd need a high efficiency blower motor either fixed speed or variable speed. If you want to stay Trane, either the XV80 or XV95 would be great.