Originally Posted by
DBMandrake
S-plan plus is redundant with Evohome as the TRV’s do the zoning for you. You’d just end up wiring all heating zone valves to come on together anyway as evohome does not have the ability (or need) to independently control multiple heating zone valves for HR92 radiator controller zones.
In fact it’s possible to configure an S-plan system without any heating zone valves with evohome (just one for hot water) as long as all radiators have HR92’s, although there are some minor disadvantages to doing that if your boiler boosts flow temperature for hot water reheating.