Upgrading Room Thermostats Analog to Digital

Don't the room stats with a neutral work better

I can't remember the details of the why

there are two issues here: the first is the accuracy of the unit against a reference temperature

As 2011 says, for accuracy, I don't think a 50 dollar mass produced unit will be +/- 1

The other point is that the actual temp and the accuracy of the temp at wall stat is largely irrelevant as its the temp that folk feel when sitting in the room is what matters, for older folk I use a large garden thermometer which I place beside their chair to see what they need at the chair and set the wall stat to deliver that.

Then the kids/grand kids come in and see the stat at say 30 and say, grandad, thats too high and turn it down!

The second issue is what is the gap between the upper and lower set points, so in a heating system,

it closes the circuit, fires the boiler, at 18 and opens at say 21

The mechanical ones, by the nature of the bimetal stat, would have a wider set point gap and therefore there would be less on/off cycling of the boiler.

A set point gap of 1 will be a nightmare for cycling.

What's the set point gap on the kit you bought, I dont see it listed.

TRVs or wall stats controlling individual rads is still a zonal system anyway

The rad or room is the zone

The same way 20 years ago when I was wiring programmable stats in every room for UFH loops. Each room was a zone.

Usually when I hear the phrase "digital system" i think waffle as digital can simply mean a digital display for example

Has it been established that digital wall stats are better than analog stats, I don't believe it has

Im not saying btw that zoning rooms shouldn't be done . I don't think you've you've made the case that it needs to be done assuming a 3-bed or similar

It may be that there is no unoccupied rooms in both zones or it may be undesirable to leave a room unheated

2 zones plus h/w may be sufficient