We’ve had the British Gas Hive controller in the house for probably 18 months to 2 years, in that time I’ve not touched the wall mounted thermostat.
All very well but since its been installed we’ve never used the wall-mount thermostat, and don’t have a clue how to turn our heating on!
The biggest problem with relying on an external service is you get so used to it, when its not there, you feel lost.
Still not long till the end of the month, and our friendly heating specialist is reconfiguring the system to remove the need for the Hive controller. The only issue I can see is a failed Loxone mini-server (Or someone doing something silly on the programming front), which we have a spare one of just in case!