Found this turd of a Trane XL16i system a couple of weeks ago, installed just under 1 year ago.
Went back and polished the turd a little today, the customer didn't want to buy enough turd polish to make it really shine.
Starting ESP= 1" wc with NO FILTER.
5 ton system with a 24" long ductboard supply plenum.
Most of the ducts made 2 90º bends off the plenum, were hung hapazardly, and there were ductboard triangles everywhere.
I hate when wires are draped all over, and the gas line runs up in front.
Yeah, a single 20x25x1 filter rack for a 5 ton system....that works GREAT with a pleated filter!
Super awesome line set.
Mastic slathered all over the outside of the duct connections, but NONE where the air actually leaks from these POS start collars.
No mechanical fasteners for the ductboard supply plenum to the coil, just tape and mastic.
My Bosch multitool with a scraper blade made REALLY short work of cutting it loose.
Back corner of the drain pan hung lower than the float switch in front....and lower than the drain outlet.
Vent pipe not twist locked together, or even fully pushed together.