How would you add zones to my central heating setup?

Soldato
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I want to add zones to my heating at home as we have just one Nest thermostat that turns on the UFH and radiators all at once which is less than ideal.

I ideally want the UFH to be controlled independently of the upstairs radiators (and vice versa) and have all of the rads on Smart TRVs so I can control the temp in the rooms more specifically.

What would be the easiest way to achieve this as i've spoken to a couple plumbers and they've offered different solutions and have tried selling me on whole new systems (Honeywell ones).

I know i'll likely need some new pipework and valves adding to my system, and i'm not averse to getting a new thermostat/system but just wondering if anyone has had this kind of work done previously and what was actually needed?

If i was to change system i'd probably opt for the Drayton Wiser with smart TRV's which doesnt look too expensive, however if I'm able to achieve this with my existing Nest thermostat (for less cost ultimately) then i'd explore that.

Anyone any ideas?
 
Our entire downstairs is open plan, hence the UFH. The Smart TRV's and valves for the rads upstairs are more so so we can just heat specific rooms at night rather than the entire house, and have more control over the nursery for example to make sure it stays at a comfortable temperature.
 
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I think the smart trvs alone will do what you want? They'll allow you to control the upstairs independently of the downstairs just by configuring each smart trv?
But if i say I want the nursery alone to be 20c it will fire up the UFH too as currently theres no way to turn that on and off, so when heating comes on the UFH comes on, no matter which radiators are open/close upstairs.
 
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