Programmable Radiator Thermostat heads to 'zone' your heating - four for £41.62 (£10.40 each) from Amazon.de
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Programmable Radiator Thermostat heads to 'zone' your heating - four for £41.62 (£10.40 each) from Amazon.de

53
Found 27th Jan
£18.93 is Amazon UK price

These solve the problem, if your house has single-zone heating with 'dumb' thermostatic radiator valves, of how to economically time-control individual room heating. In my case, the problem was how to ensure radiators in children's rooms are always 'off' during the school day, whilst allowing heating in another part of the house.

I've looked at Smart hearting controls (e.g. Nest, Hive, Tadu, Honeywell, Drayton) which have lots of functionality but to get effective room / zone control I'd need to invest £500+ for the core system with either:
  • WiFi radiator valves (£40 - £70 each), requiring strong WiFi around the house, or
  • Heating engineer to add an electric valve that controls a zone (upstairs), which sounds expensive and may not even be feasible, plus integration link to the Smart controller

Instead, I've fitted and programmed four of these in under an hour, in place of the dumb TRV heads. They work brilliantly, so I'm getting three more. 2-3 yr battery life.

Other alternative of course is to have programmable children who never forget to turn off their radiators, and don't mind coming home to cold rooms..

Blurb from instructions:
"With the Radiator Thermostat Model N you can conveniently regulate the room temperature.


Thanks to pre-programmed or individually tailored heating and cooling


phases the desired temperature can be comfortably adjusted. The device moves


a valve to control the flow of heat to the radiator. The radiator thermostat fits to all


common radiator valves and is easy to mount - without having to drain any water


or intervene in the heating system. The additional boost function enables quick,


short-term radiator heating by opening the valve for 5 minutes. This immediately


brings a comfortable warmth to the room.
"
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53 Comments
Good price heat
Well if you believe in programmable children can I interest you in this no-risk high-yield investment?

It's a dead cert, honest guv...

Just give me your bank details, DoB, inside leg measurements....
Great find, I was looking for something like this. Will they fit towel radiators in bathroom? What's the difference between types offered?
Original Poster
Zosia7 m ago

Great find, I was looking for something like this. Will they fit towel …Great find, I was looking for something like this. Will they fit towel radiators in bathroom? What's the difference between types offered?


They fit the valve base that thermostatic radiator valve (TRV) heads use, so should be fine in theory to replace a towel radiator TRV. My towel rails don't have TRVs though, and are permanently on when the heating is running.

This only IP20 though, so would eventually be affected by bathroom moisture. Can't comment about other programmable radiator valves I'm afraid, except that the Terrier one is suppose to be quite noisy.
How the Germans fit these.
33148740-VPbPC.jpg
Looks interesting. OP do you have Amazon UK link for this?
watson11116 m ago

They fit the valve base that thermostatic radiator valve (TRV) heads use, …They fit the valve base that thermostatic radiator valve (TRV) heads use, so should be fine in theory to replace a towel radiator TRV. My towel rails don't have TRVs though, and are permanently on when the heating is running. This only IP20 though, so would eventually be affected by bathroom moisture. Can't comment about other programmable radiator valves I'm afraid, except that the Terrier one is suppose to be quite noisy.


​I checked my current radiator valves and thread is 1/2 inch x 15mm, so not sure m30 will fit. My radiators are on all the time when heating is on, that's my problem and I want to control it somehow, other than manually.
Edited by: "Zosia" 27th Jan
I have fairly old radiators, any idea how to tell whether these will fit?
Original Poster
Zosia14 m ago

​I checked my current radiator valves and thread is 1/2 inch, so not sure m …​I checked my current radiator valves and thread is 1/2 inch, so not sure m30 will fit. My radiators are all on the time when heating is on, that's my problem and I want to control it somehow, other than manually.


You need to have a valve body with a sprung control ‘pin’ in it. It has a standard fitting which this and dumb TRVs (except Danfoss ones, which need an adaptor) then screw on to. Some TRVs, eg screwfix.com/p/d…258 come with the chrome valve body as part of the kit. Others, such as this are just the ‘head’ part.

If you currently have ‘lock shield’ manual valves at both ends of the radiator, then you’ll probably need a plumber (unless you are prepared to take the risk with something like the Radkit & freeze approach, or drain your heating system. Way too risky a job for me!).
oneboringfrog29 m ago

How the Germans fit these.[Image]


Wouldn’t touch if it’s sticks out like this...
Edited by: "johnszi23" 27th Jan
They are not any good in my house as doors and people would hit them.
Original Poster
johnszi2321 m ago

Wouldn’t touch if it’s sticks out like this...

It goes exactly where a TRV currently sits (usually at base of your radiator) and is a similar size. If your TRVs are in this horizontal position, it would be pretty unusual in UK.
Original Poster
33149112-TeBCy.jpg
watson1112 m ago

[Image]


Is the digital display the correct way up with it fitted that way?
Original Poster
oneboringfrog9 m ago

Is the digital display the correct way up with it fitted that way?


No - the display remains in the same direction, but it is easily readable.
Got a 4 pack directly from reichelt eletronic in Germany delivered to UK for£36.99. That was in November last year. Good job. I have them set at a constant temp but when I get time I will use them properly.
Original Poster
andyatcorco16 m ago

Got a 4 pack directly from reichelt eletronic in Germany delivered to UK …Got a 4 pack directly from reichelt eletronic in Germany delivered to UK for£36.99. That was in November last year. Good job. I have them set at a constant temp but when I get time I will use them properly.


Yep, I bought my first four from Reichelt too, but Amazon.de is same price currently, so probably a safer bet.
oneboringfrog32 m ago

Is the digital display the correct way up with it fitted that way?



They are upside down. Would be really useful if there was a back light as you could spin this model 180 degrees and still see the display. I have 3 different types, including these. All are wrong way up and none have a back light.
there's a lot of second hand in amazon warehouse starting at £10.88.
Honestly. Germans!
I’ve currently got the Honeywell evohone and you will need a bridge to make this work, and potentially a plumber.
I would highly recommend the Evohome
Deal link leads to 1 for 9.79 eur (plus delivery). Any tips?
these work great even off you have the heating on really low they heat up the radiators
spammy32 m ago

Deal link leads to 1 for 9.79 eur (plus delivery). Any tips?


Add 4 to your basket.
Great price, I have 6 of the Bluetooth version of these valves running in my home - work great. I have a reasonable sized house and during the weekdays I program the kids room radiators to be off (when they are at school) & my own bedroom - so if you put the heating on during the day for example its not heating up a room that won't be used. I have an office that I only use on certain days - so I set this to only heat it up then.

Bluetooth just makes it easier to program and change - heat added.
degziebob28 m ago

Great price, I have 6 of the Bluetooth version of these valves running in …Great price, I have 6 of the Bluetooth version of these valves running in my home - work great. I have a reasonable sized house and during the weekdays I program the kids room radiators to be off (when they are at school) & my own bedroom - so if you put the heating on during the day for example its not heating up a room that won't be used. I have an office that I only use on certain days - so I set this to only heat it up then.Bluetooth just makes it easier to program and change - heat added.


I noticed that there was a bluetooth version
how long do the batteries last? I want the living room main radiator not to turn on at night and back on in the morning (so 2 activations/movements a day)

i'm guessing you use an app to control them?

ideally I wanted one that was controllable over the web and gave back room tempertures, but they cost 3-4 times as much.
If the doors are probably left open anyway do these have any sort of meaningful payback time?
For those wanting to know a bit more , you can download the user manual here: eq-3.com/pro…tml
m1chaels54 m ago

If the doors are probably left open anyway do these have any sort of …If the doors are probably left open anyway do these have any sort of meaningful payback time?



it would depend on your home. If you were to use these to turn off downstairs radiators in the evening so only upstairs is heated or during the day have the upstairs bedroom off. then the payback would be quicker.

In a flat or bungalow the payback would be slower.

You might have an extra, toilet,bathroom,bedroom, which you could more easily control. This would make the rest of the house heat up faster and reduce the cost of heating unused parts of your home.
The supplied AA batteries in these are supposed to last three years. But some reviews on Amazon said the batteries leaked after about a year, causing total failure.
Can somebody please summarise the differences between all the models on the link. My German is quite poor (non-existant)
Good price and voted hot accordingly.

Though a bit of mis-information in the OP. Honeywell, likely the others too, do not use WiFi for the signal to the TRVs. So string WiFi is not required. They use a different frequency 433mhz I think it is. Far less interference and connects a lot more readily.
Do these work with Max! Cube
Original Poster
Oneday777 h, 34 m ago

Good price and voted hot accordingly. Though a bit of mis-information in …Good price and voted hot accordingly. Though a bit of mis-information in the OP. Honeywell, likely the others too, do not use WiFi for the signal to the TRVs. So string WiFi is not required. They use a different frequency 433mhz I think it is. Far less interference and connects a lot more readily.


“ATP921R3100evohome Wi-Fi base pack1£249” but you’re right,having looked again: this is not for trv control but for other remote internet-enabled features.

Cost for Evohome kit for controlling 7 rooms is £819 plus installation though, which seems rich for domestic heating given the rate that smart home technology is currently evolving.
Edited by: "watson111" 28th Jan
I have been using a Honeywell Rondostat for the last 7 years. These are a great way of reducing your heating cost. One thing to bare in mind is that they have no way of calling for heat, therefore you are reliant on the room where your main thermostat is located to trigger the boiler. In practice it just takes a little longer to heat the room with the programmable TRV.
How noisy are these? I looked into them a little while ago but concluded from reviews that they would be too noisy for the bedroom of a light sleeper
gwapenut1 h, 21 m ago

How noisy are these? I looked into them a little while ago but concluded …How noisy are these? I looked into them a little while ago but concluded from reviews that they would be too noisy for the bedroom of a light sleeper


I'd guess the noise comes from the motor in these, which are used to mechanically open and close the valve.
It's a good question, and hopefully someone can answer (although, the answer might be subjective)
These are similar to the max eq3 system and look identical except they don’t have the Wi-fi.

i have the whole house working on a The Max-Eq3 system with iPhone control. Individual room thermostats and window sensors. It’s great because if the window is open the radiator in that room shuts down. When kids are away for a week I can put that room in holiday mode and it automatically switches back on before they arrive back.

We have a log a log burner in the lounge and as soon as that’s on and the temperature rises all the rads in the lounge shut down. I found the normal thermostatic valves didn’t as my wife had 2 settings, I’m cold put radiator on full, I’m hot switch it off completely. Google Max eq3 and look at items from Conrad Electronics.
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