This is in an apartment to condo conversion 2nd floor unit (Florida). Built in 1994, I bought it as a condo conversion in 2004. Unfortunately at the time I last lived in this unit (2007) my DIY and homeowner maintenance knowledge was no higher than being able to change a door knob or hang a picture. I have no idea what the original water heater and A/C drain configuration was when I lived there. The unit has been rented out since 2007 to various tenants. Current tenants are moving out after 5 years and I am trying to rehab it for new renters. Until recently I was an out of town landlord, using a manager. Now I am back in the area and can see all my problems first hand.
In 2012 a new water heater was installed (licensed plumber). In 2014 or 2015 a leak in the A/C (overhead "pancake" unit) drain pan occurred, and an HVAC guy (licensed) replaced the A/C pan. I don't know where the original A/C drain exited to, but right now it drains into the water heater pan. As a result there is standing water in the pan and the water heater has visible rust on the exterior. The water heater pan does have a plumbed drain, and that PVC pipe penetrates into the drywall.
The water heater also appears to have the pressure relief valve plumbed to a PVC pipe that penetrates beyond the drywall.
I'm wondering where are these PVC pipes going to? HOA contact was not helpful. Recommendations? I'd like to pipe away the A/C condensation drain and not have standing water in the house.
Thanks!