1980s North Texas HVAC: Buckling floors & a mystery drain line
I noticed my hardwood floors buckling, so I’ve shut down the AC to find a suspected condensate clog. My home is a late-80s build in North Texas and I'm struggling to locate the exit point.
The Situation:
The Problem: Buckling floors near the unit; suspect a primary drain line clog.
The Search: No external PVC pipes found. Only two metal/copper pipes outside (no water flowing from them).
Troubleshooting: Used a shop vac to pull about a half-gallon of "gunk" from 5 the internal piping inside the house (shown in pics). I poured water down the T-switch/cleanout, but can’t find where it’s discharging.
Current State: Secondary pan is dry now, but I’m hesitant to restart the AC without confirming the primary is clear.
My Questions:
Are these metal/copper pipes in the photos typical AC drain lines for a late-80s North Texas home?
Is it common for the primary to tie into a bathroom sink P-trap in this area/era?
How can I definitively verify the line is clear before I risk further floor damage?
Any insights or feedback from the North Texas/HVAC community would be a lifesaver. I've been at this all weekend and am beat. Thanks in advance.
