Thanks for the responses. It is a non-ducted A/C. The setting knob (fan/AC settings, low and high for each) and temperature knob (blue to red) are on the ceiling assembly (inside the RV). Water does run off the roof when it's running. I don't know if that happens all the time or just when it's been running for a long time or when it's running normally or sounding whooshy. It still works fairly well most of the time and now it's cooler. Did catch it being whooshy the other day. Seems to happen most during the hottest part of the day.