@Random_Robbie @TheKenMunroShow @cybergibbons @tautology0 It's messy and def not perfect, but seems to work: https://www.bentasker.co.uk/blog/house-stuff/716-automating-our-heating At some point I might still pick up a couple of smart heads, but I'll need to change the valves themselves too (they're an old weird thread size) so it's likely to stay on the to-do list a while