Can you add room control/zone control to a heating system after the fact?

R.O.S.S.I

R.O.S.S.I

R.O.S.S.I

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We have a standard combi boiler heating system that powers UFH downstairs and radiators upstairs. This is controlled by a Nest thermostat in the hall. When the heating is on it heats all of the house and our UFH isn't zoned so the entire downstairs floor warms up (it's open plan).

Is it possible to add zone controls to heating systems after they've been installed?

Would be nice to be able to set the upstairs and downstairs heating independently at a bare minimum, or even have control over individual rooms upstairs.
 
It's very possible to split the upstairs and downstairs in this case, but you'll be doing a reasonable amount of re-plumbing. You'll need the flow from the combi splitting with two zone valves plus bypass, and a new send pipe running to all upstairs rads. The UFH downstairs, if not already zoned, is pretty much a no-go without ripping out the entirety of your downstairs flooring and relaying the pipes with a zoning manifold added in somewhere.

Edit: once upstairs is split into its own zone, you could then get smart radiator thermostatic valves that can call for heating in the upstairs zone to only that radiator etc. Depending on the system you'll be looking at £50-100 per radiator cost though.
 
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I thought the point is you can controls individual rads, just like you can with manual TRVs, but with more accuracy. We have TRVs and I can shut the rad off by my desk, while the ones in the bathroom next door are still nice & hot.
 
Cant see why it wouldn't be possible - it would increase in complexity if the ufh is just tee'd off your main flow and return I suppose. Plumber job for sure and new wiring centre/stat that can do multiple zones.
 
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