My units were installed two weeks ago. Ducane, which is supposedly a segment from Trane or something.
Not super thrilled with the upstairs performed, feels a lot like my last system (not enough air flow). Talked to the HVAC guy as he was finishing...said, hey, this is not blowing much out of the vents - he was in a rush to get out of there - and he said, it’s probably your duct work, they use a lot flex tubing up in the attic, and you have long runs to each side of your house. Well, that’s great, I just spent $14,000 for the two units (one for the first floor and the other in the attic). The attic uses dampeners - I may remove them to see if the airflow increases, or install a booster fan. Not super thrilled.