I installed my AC unit in the apartment about two years ago, and I've recently noticed moisture pooling under it. After lifting the cover, I found a pretty large hole that goes outside. What would be the easiest way to fix this, especially since I don't have easy access to the exterior wall?
2 Answers
One quick fix could be to use expanding foam to seal up that hole. It really helps with insulation and can keep moisture from getting in.
I’m not an AC expert myself—mine’s actually broken right now—but if your unit has a filter, it might be worth checking or replacing it to help with moisture issues.

That sounds like a good idea! I just worry about how long it will last, though.