Adding thermaskirt to a room where we have a single zone evohome

[paulockenden]

An HR92 will partially open to keep the room temperature constant. A BDR91 will keep opening and closing at a fixed cycle to approximate the same. But it'll never be as good. If you also use a BDR91 for boiler control then at least the cycles will be synchronised, but if you use OpenTherm then the boiler will ramp down to a low(er) temperature but the BDR91 controlling your skirting board will continue to pulse on and off. While off the boiler will just be chugging away to itself.

If you could hide an HR92 somewhere (in a cupboard or under an easily accessible floorboard) then I think you'd end up with both better control and a more efficient system.

Others may disagree.

[Mac4]

I would control it with the BDR92, but it is possible to use a HR92 set up as an actuator only and have a remote temperature sensor as with the BDR92. You can fit an inline compatible TRV body on the flow pipe. It's up to you really both would work. But I think you have an actuator with the skirting set ? Simple is good !

[dcreager]

An HR92 will partially open to keep the room temperature constant. A BDR91 will keep opening and closing at a fixed cycle to approximate the same. But it'll never be as good. If you also use a BDR91 for boiler control then at least the cycles will be synchronised, but if you use OpenTherm then the boiler will ramp down to a low(er) temperature but the BDR91 controlling your skirting board will continue to pulse on and off. While off the boiler will just be chugging away to itself.

If you could hide an HR92 somewhere (in a cupboard or under an easily accessible floorboard) then I think you'd end up with both better control and a more efficient system.

Others may disagree.

So would the temperature sensor be the HR92? surely it would not report the temperature of the room if it was in a cupboard or under the floor?

Ah sorry....just saw Mac's response......It could be used as an acutator

[dcreager]

Thanks very much to all...….Very helpful. I will go with the BDR91 as it seems slightly cleaner (rather than have a battery to worry about). I'll let you know how it goes <crosses fingers>

[dcreager]

Update

I changed my strategy after thinking about the comments above, I read a bit more from this forum and decided to go all in for Evohome. I bought 14 HR92s and 4 of the round thermostats (YR??).
I now have 90% if my house evohome controlled (2 towel radiators,1 tiny WC radiator and attic conversion electric rads not under Evohome) I have to say, I LOVE it....even with the old fashioned UIs and the flakey mobile app performance reported elsewhere in these forums.

For the Thermaskirt control, I actually arranged power so I could either do BDR91 controls or HR92s . I am currently using the HR92s

Lounge Thermaskirt installation was completed Dec 7th. It was a bit of a mixed story, their instructions are full of traps and we made a number of c**k ups, the worst being that when we laid our carpet we experienced a minor flood, we recovered and all ended up fine. I sort of take blame for this because I used a stressed plumber who, although very competent and careful, suffered because English was not his first language. He and I are very confident we will have no trouble installing in our Dining Room (in the next few weeks). He liked the product but not the instructions. I think our conclusion was the installation doesn't require anything difficult, just a careful study of the instructions. We had rushed it

The size of the room and the available skirting was quite borderline (using their calculations for heat output). We used the three pipe version (which added to the instruction flails as it is not at all well integrated in the documentation) to increase heat output. We also had threshold emitters for a 3 metre patio door opening.

Aesthetically, the result is BRILLIANT. Also the type of heat seems nice, less stuffy and oppressive than radiators, but this might be psychological. The room is probably 50 sq metres .

It does seem to take longer to heat the room to temperature to my wife and cat's requirements (23C), but Evohome seems to take care of it.

So overall and so far I like Thermaskirt, I would use it instead of radiators if I can.

Have to say, I am basking in the joy of Evohome, so some of this might be reflecting on Thermaskirt.

Happy to provide more info if anyone else is considering Thermaskirt. Also will provide an update when we 'do' the Dining Room