[beenthere]

some furnace brands have heat exchangers that crack easier than others or other inferior parts etc.

AND re brand them to avoid attention and yet some mfgs are hired to produce good units for large distributors

builder quality is usually cheaper and not as good....maybe you can get a credit and have a more well known brand installed

Or it could be that the under sized duct work installed on it caused the problem, and would have done the same no matter what the brand.