@Tricky-Dicky @oldbutnotdead .. thanks guys this is really useful information and has helped enormously.
My only concern now is that deploying lots (10 or 12) Smart TRVs, will make my set-up too complex. I'll need to do some more investigations.
Hi all,
I have a very basic heating system that I would like to upgrade.
Basically, it consists of a Oil burner (non condenser) and two zone systems (downstairs and upstairs), plus hot water tank (which is part of the upstairs zone)
There currently are no thermostats except what is on the...