The Efficient Home Forum

If the OP is around, I would love to know how you are recording and graphing the temperatures in your rooms? I've seen similar although I do not run OpenTherm... but regardless I thought EH would modulate flow to the radiators via the HR92 and keep adjusting on a fairly regular basis. I do use a ...

I have a 12-zone system that has been running for about 3 years. Suddenly today, most of my zones are reporting comms faults - within a couple of hours of each other. No temperature is reported on the main controller but the HR92 units seem fine. Is there a big system update being pushed out or ...

I fitted an additional HR92 to a new radiator a few weeks ago, all good. Until yesterday I noticed it was no longer straight but tilting... looking more closely it just come off when I touched it and the white plastic screw thread had become really distorted. I can't think anyone had been near it to ...

I am building an EvoHome system and in one room, the HR92 is clearly not getting a good airflow - it claims the room is 21.5C when the thermometers I have tested around the room in just about every location claim it is 15C. So I want to get a dedicated sensor which I know is possible. I go to the ...

But the earlier suggestion of using an in line value and the HR92 would be cheaper than a zone valve and BDS91 - I hadn't thought of that! Its the best suggestion as doesn't require mains voltage and the HR92's are fully modulating (who wants a 2 port valve swinging around lol)... 8-) and there's ...

Thanks, this is the sort of idea I was after. Why the T87RF not the cheaper DT92E? I assume your thought was two actuators wired into one relay box? Interestingly I found you can buy both motorised valves, and mains power rad actuators (£30 each). Can't recall the part number right now. One ...

Maybe I should ask, if I have HR92 in my room for an existing EvoHome setup and just want the cheapest wall thermostat, which is it?

Then why the DTS92? It looks like an old fashioned version but does the same?

Now I found a 3rd... Honeywell DTS92E1020 Wireless Digital Room. I'm continually struggling to figure out what products are compatible with each other and EvoHome, since Honeywell do other ranges; is there not a single table listing this, or a nice brochure for EvoHome? I have my core system set up ...

For an EvoHome multizone setup, are these both usable as per-room thermostats? What are the differences between them?