Do I need Smart Thermostat if all rads have Smart Radiator Thermostats?
Have bought Extension Kit + 8 Smart Rad valves but not yet installed. I was planning to put the Smart Thermostat in the Entrance Hall / Landing, which has two rads with no TRVs, and then have Smart Rad Thermostats in all other rooms. Will this work OK/efficiently, such that in effect the Smart Thermostat is only controlling hall/landing temperature? Would I be better getting Smart Rad Thermostats for the Hall rads too, in which case what would the Smart Thermostat be doing? If there are Smart Rad Thermostats on all rads and no bypass, is that a problem?