Help with air con unit placement. Angled ceiling, high windows.

[seaweader]

Hi,

I’m building a new home, and am struggling to get some decent help from the air conditioning supplier in terms of placement.

Also, I live in Finland and don’t speak Finnish well, so I’m struggling with language barrier a bit.

Brief
* 2 story house
* Air conditioning unit upstairs
* Only two possible locations due to having an angled ceiling and high windows on external walls
* I’ve included a couple of images.
* The first one is the upstairs floor plan, and I’ve marked out two walls with red blocks.
* The other two are 3D models showing potential placements.

Potential Challenges
* Routing the piping through the walls to a good external location may becoming an issue for the main internal wall?
* The air con in the main wall would be above a stair case. Loss of cool air downstairs? Upstairs won’t get enough cool air flow?

Files attached
* Floor plan of second floor. Red blocks indicates areas where unit could go.
* Two 3D models of possible places. External wall placement is less desirable.

Any advice would be much appreciated.

Cheers!