Picked up a new stock but dented Daikin furnace for $1200 a while back, and finally got around to installing it today. I had measured up and commissioned a plenum but fucked up a little bit, so it took longer to get the S-cleats properly installed and the plenum airtight than removing the old one, cutting in the cold air return, wiring the electrical and running the intake/exhaust pipes took put together. Approved ducting methods seem so fucking archaic, everything has to be tight but you can’t just put things together without taking half a dozen things apart to get it to fit. Of course, I had to fix one transition because I lost my temper and punched the shit out of it.
On the plus side, it only took 2 trips to Home Despot, the second one because the old switch had been drywalled in and was completely inaccessible. I cut the wires off it and put a new box and switch where I could reach it.
I need to get a condensate pump yet, and call for an inspection, but winter is still a few months off so I have time.
The condensate pump matters. Also the condensate line is normally flex tubing that can be prone to kinking. I suggest either being OCD about the flex tubing not kinking, or getting rigid PVC, or getting a “bigger” condensate pump. (I got a little orange box and it had no end of issues until i ripped off the drywall and found the kinks and said screw it, lets straighten this out and get a bigger pump and never have to worry about leaking condensate again!!!). Also having the condensate drain into your mechanical room is pretty awesome futureproofing.
Good point on using a PVC line. I have to go up and over the basement bathroom to hit an accessible point to drop it to the drain pipes.