Yes they are under the bathroom sink on the floor.
I don't know of anyone who covers the A/C unit alone. Most people who store their TT outdoors cover the entire vehicle. I use plain old car wash detergent on the roof.
2006 23B Hybrid with 10k round bar WDH
2011 F150 4x4 SCREW Ecoboost, Max Tow, Integrated TBC, 3.73 LS axle, Firestone Ride Rite airbags.