Which Smart Thermostat? Evohome, Tado, Ideal Touch or Nest?

Bl4ckGryph0n

Another shout out for Netatmo. Love the tight integration with Apple Homekit as well. We have the room thermostat, and also individual TRVs. The system is reliable and works well together. And if the internet doesn't work, all can still be controlled locally.

Ianandanne

I did lots of homework and found you've got to spend to get something good, Nest has more functionality but is a lot more money. I got the Netatmo and Radiotor valves and love the control I know have. It is fantastic value...

Fergal82

Nowt wrong with hive. Lots of these stats seem overly complicated, subscriptions, cloud etcJust curious why it needs to be opentherm compatible?

Toki

A few votes for Netatmo.  Haven't had time to look into, will do so this week, thanks.

Fergal82, mainly focusing on Opentherm due to efficiency.  My understanding, and please correct me if I'm wrong, is that these are more efficient and modulates modern boilers rather than the on / off nature of Hive where it is all or nothing it can run at say 50% power.

As my boiler is Opentherm compatible, thought it worthwhile concentrating on thermostats that offer this.

PsyVision

It is more efficient but only a small amount compared with going from no stat to basic stat to smart stat from what I read on it.

Be careful with Tado as well in that depending on whether you have an S-Plan setup and you want the TRV to call for heat, you can't use OpenTherm (as I found out once I had bought the adapter for my boiler).

Fergal82

Your boiler will modulate anyway. You have a modern boiler so it’s designed to do that by default.

I can recommend hive, easy to use and not overly complicated like some solutions seem to be.

I wouldn’t necessarily rule it out due to this open therm business myself

neilball

Evo works just fine as a single zone heating controller, it’s just a bit more expensive than more simple single zone smart stats. If you don’t ever intend to go multi-zone then most smart stats operate in a very similar way, so providing they do not use the cloud for basic functions then I’d pick the unit with the better looks and user interface preferred best.

If you do want to go multi-zone then yes, it makes sense to put actuators on the radiators for rooms you want switch off when the heating is on. As Evonis modular you still have the option to build your system over time rathe than doing it all in one go.

And no, the Lyric is not the Songle Zone Stat, the SZS is actually a Y87RF with BDR91 boiler relay and RFG100 ethernet gateway.

neilball

There is a backlight timeout, time controlled “dark” mode etc so not sure why someone would say the display does not dim or can operate is a “less bright” mode. It’s true the display does not switch off completely but I hardly call it a bright distraction at night.

VforViennetta

In the context of using it with thermostats on the radiators, does this mean that, if the internet goes down, the only way to control the thermostats is to manually use the control on each valve?

Also, does Tado have some kind of panel like Honeywell evohome?

Can it work with wifi but no internet? Ie if there is wifi connection but the router is not connected to the internet? Or will it refuse to work without the internet so it can spy on you? For example, Google chromecast speakers don't work without the internet, but Sonos speakers do (of course you can only play local content).

Ianandanne

You need internet as the updates come from the server in most cases.