Originally Posted by
paulockenden
I know this isn't what you want to hear, but Evohome works best when you give it control of everything. I think that when spending the amount you must be, it's daft to skimp on a couple of hundred quid for additional HR92s.
However, if you do that, a couple of things to note:
1 - You won't actually need the four zone valves (so perhaps a saving can be made there to pay for the HR92s?).
2 - You'll probably need to have the controller on one of the middle floors, to get a reliable signal to the top floor and your basement. Ideally somewhere in the middle of that floor too, rather than on an external wall.
As for the 12 zone limit, you can put several HR92s (or even rooms) into the same zone. So you could have a 'bathrooms' zone, for example, or 'second floor'.
I'm sure others will have observations too....
P.