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Am considering a move to Tado precisely to gain per-room controls
Yeah, I had Nest in the old place and the infuriating thing was that with a radiator behind my bed then to have the house at ~22 degrees at, say, 7AM then Nest realised that it needed to start heating a couple of hours earlier.
So at 5AM then the radiator behind my bed goes on and because I'm a 1ft away from it then I wake up at about 5.05AM and switch the heating off because I'm fucking roasting.
Zones needed this time around
Nest really is just "Is the boiler on? Or is it off?".
It's boiler control and perhaps if places had full HVAC things would be different... but Nest primary selling point is "We'll learn your home heating needs - how long it takes to heat, when you want heat, and we'll dynamically schedule your heating to keep the temp how you want for the least cost"... but that is still just controlling the boiler for the whole house and it has no understanding of radiators at all.
Am considering a move to Tado precisely to gain per-room controls as the flat is over 85m2 and there's no point heating the whole flat when I'm WFH from the living room and barely go into the rest of the flat during the day.
Tado will at least do both boiler and radiator control... and as I have tended not to use the intelligent scheduling of Nest (it really doesn't understand that the reason I boost temperature is because I'm sat next to a draughty window - so the criteria is the wind speed and direction outside)... going with Tado looks to be the far better choice.