Here is my latest call.
Custom built expensive home (actually remodeled) 1.5 years ago. Heat and A/C have never worked since day one, I was told. 56 degrees in the house.
Equipment: Home automation system running the HVAC. Carrier Infinity furnace. Carrier split A/C. Hot water floor radiant heat in 8 zones. Durozone 2 zones for heat/ac on the Carrier furnace. Aprilaire 8 zones for the radiant floor heat with 2 of those zones combined for Carrier furnace hot air heating/ac.
Pictures as I got to the job. Note two wire coming up from furnace control panel with wire nuts..they are connected to W of TStat terminal. Just hanging in the air. I could go through all the details but that would take days.
That pipe with the blue painters tape hanging on the end, yep, that's the drain. No trap either.