I use Tado and have a number of rooms, each of which has it’s own climate entity - e.g. climate.lounge, climate.office, etc.
These entities can each have a state of ‘off’, ‘auto’, or ‘heat’.
What I want is a single entity that summarises whether the boiler is on or not by checking these entities and seeing if any of them have a state of ‘heat’.
You can’t do this using groups. What’s the easiest way of doing this using a template sensor?
I’m thinking a group of entities that the template can iterate through and look at the value of each - anyone done anything like this before?