The last couple of days have made me get my finger out and contact a few companies to see if I can get some surveys and quotes.
Based largely on what I've read in this thread, my initial plan is a wall unit in the lounge and a loft unit with ducts to two bedrooms and the home office.
I'm hoping that by going with a loft unit, the drainage pipes will all be down-flowing, so no pumps needed - that was one big tip I got from this thread! It will also avoid the issue that both of the bedrooms involved have fitted wardrobes against the obvious wall you'd use, which would get in the way rather.
With a single unit ducted to three rooms like that, is it possible to have variable output to the rooms? It would be sufficient if I can just have it not to all three rooms. I presume variable temperature is less likely to be possible.
Anyone want to place bets on what sort of quotes I'll get back?