[Richard]

Have you thought about using the removing the curved trim piece at the transition between the wall and the ceiling? There is a chase there that Newell uses for all kinds of wiring on both sides of the coach. It’s a little tricky to find the screws holding it in place but you seem to have mastered the Newell jigsaw puzzles by getting the slide room apart and back together.

You could come straight up behind the passenger chair in that cavity that currently houses the air discharge for the front AC unit. I think that cavity be your best shot at getting the line for the TV location unit also.

Second idea, is to use the back of the existing air return plenum to get into the center line in the basement of the coach. Snake the lines down the center until you get to where you want them to exit and go straight up. You might have to pull the washer dryer to access behind there, but that would be the place to come through the floor if you are putting a ducted unit over the W/D.

I say all this not having run lines in those areas, just thinking about the possibilities out loud.

If you try the passenger side in the basement the steps are in the way.

Keep in mind anytime you go through the floor, you have 3/4 plywood then 10 or 12 inches of solid foam, then another layer of 3/4 wood, and then possibly some sheet steel depending on where you are such as a wheel well or the bay where the generator blower is located.

Are you going to use the AC equivalent of shark bite fittings, or are you silver soldering?