Difference between Trane XL15i models
Been reading these forums for awhile now and have learned a ton! But now I have a question that I haven't seen asked before.
I have two different bids for a Trane AC unit for my house. Both recommend an XL15i AC, but one is a 4TTX5048A10004 and the other a 4TTX5048A1000B. What's the difference?