Replacing Nest thermostat with Tado
New poster on here so please be gentle!
I have recently installed Tado smart thermostat radiator valves on four of my radiators and may well in time replace the existing (manual) TRV's on the remaining rads (with the exception of the one in the bathroom so that the boiler/pump has a safety circulation). So far so good and I am pleased with the results.
However, for the last 5 years or so my "main", and until recently, only, thermostat has been a Nest Smart thermostat (3rd generation). I have been very pleased with this - it looks good and has all the features of the Tado equivalent and more (e.g. Farsight). However, it obviously fails in one important area: it does not sync with the Tado smart valves. So the question is- is it worth making the change? I get the fact that if a smart valve is calling for heat but the Nest is up to temperature then the system will not respond- which I assume it would with an all-Tado set up. However, I do have some questions about this. What if for example one or more of the smart valves calls for heat but the main Tado thermostat is at or beyond its set temperature? Does the main thermostat overrule the valve or vice verce? I can see there being no conflict where for example the valve and the thermostat were in different parts of the house but what happens, as in my case, when there are two radiators with smart valves within a few feet of the main thermostat? Indeed, this raises a second question - which is what is the point of the main thermostat if all the radiators (with the one exception) are controlled independently.
Assuming there are straightforward answers to these questions I suppose what I am asking is it worth getting the Tado thermostat to replace my Nest?
My apologies in advance if the answers to all this are simple and obvious and it is just me. I also apologise if these points have been answered before (I did a search and couldn't find anything).
Thank-you in advance for your help and advice.