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Thank you, very interesting.
So are you not zoning the house with smart TRVs on the rads anymore? We're getting a Vaillant ASHP, mainly due to noise (went to visit someone with the same 7kW model we're getting, it's much quieter than the Daikin and Mitsubishis I've experienced) but it's not compatible with Homely currently, so looking to use Tado TRVs for the rads...
ectoplasmosis-
Heat Geeks seem to think the Vaillant controller is pretty good so you might not need Homely anyway. From what I can work out, with decent control firmware you could basically do what Homely does by setting schedules.
We’ve got dumb TRVs on all the bedroom rads but apart from our bedroom they’re all set to max. Seems to work fine if the rads are appropriately sized based on a heat loss survey. In general, you don’t want to restrict flow so open valves and correct sizing is the way. Feel like we got there by luck mostly but it seems to work.
dbr
Peaked at almost a tenner for the coldest day, usually less than a fiver, that’s for all electricity, heating & HW.
Ditched the Tado along with the gas, ASHP is controlled by Homely and we’re on Agile Octopus so it tries to only run durning the cheapest periods, which means overnight basically. It’s quite loud tbh, in the dead of night. I’m getting used to it and there’s been no complaints from neighbours so I guess it’s fine.