Can I run two nest thermostats?

[Paul Hurst]

Hi guys,

I have a greenstar 8000 with a nest thermostat currently site in my living room. Problem is the upstairs cools down a lot faster than downstairs.
I was wondering if I could have two nest thermostats. One on the landing set at 19 and one downstairs set at 21
I'm obviously aware I would need to limit the downstairs temperature via the radiator stats and that the downstairs nest would only be used to bring the temperature up should the downstairs drop below 21°
The obvious solution would be smart radiator valves but I'm unaware of any that can " call for heat" and are compatible with the nest thermostat. The one brand that is compatible cannot call for heat.
If I'm being a bit mad or you guys now of a better way please let me know.
Cheers Paul

 

[ShaunCorbs]

Do you have three zone valves eg upstairs , downstairs and hot water ?

 

[Deleted member 120897]

No, it is possible, but you need zone valves for it to work.

 

[Paul Hurst]

No zones just a bog standard system. I realise each time the boiler kicks in it will be heating the whole house. With regards to saving energy I was wondering if having two thermostats would be more efficient than just relocating the stat to the cooler area.

 

[ShaunCorbs]

Nope can’t you just use an offset if the nest supports that feature eg mins 2.5 degrees off the temp

So stat will read 20.0 but will shut off at 22.5 dc

 

[Gasmk1]

Thought that was the point of hive and similar the rad valve can bring on the heating in each room

 

[Paul Hurst]

Energenie smart valves are the only ones compatible as I know of and as I said they cannot call for heat. If I know this in the first place I would have bought the hive.

 

[Gasmk1]

well ditch then nest then or as stated you need to split the system wIthe 2 2 port zone valves