So, do you think Tado could calibrate and apply a curve of sorts to the offset?
They already do something like that, I read somewhere the temp measurement you see is not a direct measurement, the TRV has 2 sensors, one closer to the the radiator and one further away in an attempt to compensate for radiator heat. They also average the reading over quite a long time.
When you are trying to maintain a constant temp with a luke warm radiator, I can see this working somewhat. But when you are heating from cold to much warmer, and you have a glowing hot radiator and you are trying to guess room temperature by comparing 2 sensors mounted a few cm apart, I dont think this is feasible.
Besides, there is no reason not to implement external sensing. Not when you can buy wifi or zigbee temp sensors for $9 retail
Good idea jacoscar. Perhaps the resistance of a long lead would mean some calibration adjustment might be necessary. Given the expense of a smart trv, I am not inclined to try personally 😁.
If they made simple wall mounted wireless temperature sensors, I'd buy one with every trv to have better control of the room temperatures!
As mentioned by everyone, the smart thermostat is to expensive to have one in each room, you can use the app for changing the temperature which is far more convenient anyway.
The other option is a simple connector on the rear of the unit to allow any standard PT100/PT100 or even a digital 1 wire interface to hook up something that might limited by lead length to something 1-2m max, but would be far enough away from the radiator to allow it to be far more accurate.
+1 for this. Just installed the TRV's and they are appalling. I work as a BMS engineer (heating and ventilation controls) and this product is actually embarrassing. No support from Tado when needed. Close to returning all products.
The great irony is Tado used to have a small, dedicated room thermometer. It came as part of the v1 extension kit.
When I upgraded to v3 hardware I asked if it could be used in conjunction with the smart TRVs to be told no, it's not compatible.
The basic tooling / blueprint, it would seem, is already there (granted updated circuitry and firmware most likely is required too) -- so Tado...why hasn't this been acted upon given there's clearly a demand for such an accessory??
The smart TRVs are conceptually at great idea, but they have a glaring flaw that has a clear and easy(?) solution.
Failing that, as others have pointed out, there's a plethora of other 3rd party smart home devices that read room temperature (I'm looking at my echo right now which is one such device). How about integrating with these if a Tado 1st party hardware solution isn't feasable?
If I'm honest I'm amazed the TRVs were released without a re-worked v1 room thermometer released alongside them. 🤯
+1 Yes please - several rooms where just setting an offset on the TRV still results in not accurate room temp readings. A cheap room stat slaved to a given TRV would be a great addition.
+1 this is badly needed
I have some rooms where the Radiator thermostat is very close to the window. This makes the room seem a lot colder than it is. A separate temperature sensor would help a lot! +1.
+6 (since I have 6 TRVs)
for those reading this at Tado HQ - please offer external temperature and humidity sensor
in case signal from external temperature sensor is not available, you can fallback to TRV, so we are covered in case battery runs out etc.
I'm playing around with dismantling a TRV and installing the circuit board into a small case and hopefully run it off a 3v coin cell if not a couple of AAA batteries. I've already have a spare TRV with its connections to the motor disconnected and it works perfectly fine as a temp and humidity sensor .
When Amazon sells the 4 pack for each one can be adapted costing around £35 + £5 £40 not cheap for a wall sensor but half the price of the smart thermostat.
@Jacopo2 The circuit board is connected to the motor and the led display by a single small ribbon cable, flip a tab and remove, very easy to connect and disconnect.
If using the valve itself you would need to make sure its connected to system and done its calibration. Then pop off the top ( taco sign) remove ribbon cable all with batteries inside.
Removing batteries and popping cable will then give you an error on your app ( calibration) but my short initial testing showed it still monitored temp and triggered heat.
I'll feedback when I've transplanted the circuit board into another case.
Maybe a fire-sale to clear out existing inventory before launch a mesh networking enabled one? Conjecture and wishful thinking most likely on my part! https://community.tado.com/en-gb/discussion/comment/7495/#Comment_7495
@Joead To be honest, I've been thinking the same. After seeing the 4 vertical pack down to £134.24 in December, I thought something must be happening. Might just be me looking into it too far.
When I asked about maybe a cheaper package for a Smart Thermostat, if you already own a valve I got this response - https://twitter.com/tado/status/1196474538722246660
Read into that how you want. Cheaper thermostat package, new cheaper external room sensor, nothing? 😂
Maybe waiting to release new products at the same time?
Our house, like everyone else here, could really do with some sort of external sensor to control our valves! 🙂
+1, fibaro heat controller has an external temperature sensor so it is not that difficult to improve this tado system.
External sensor is definitely needed. I’ve been playing around with offsets for months and it’s not the solution. Surely something needs to be done by this company to at least keep its users informed as to what it’s doing for its users.
I'd say a class action law suit would get a reply. A lot of false advertising like the firmware will upgrade when you connect.
+1 On this please, it's a no brainer.
Tado, please if you're reading these threads - In the meantime, can you at least allow us to dynamically apply the offset. For example only apply it when the TRV is calling for heat.
For example mine tend to be 2C hotter than the room actually is so if I apply a -2C offset it's correct when the room is being heated but wrong when the room is not being heated. When not being heated it'll report -2C colder than it actually is which causes the heating to be unnessessarily turned on.
Yes a solution is needed urgently. Tado for goodness sake respond and do something about it.
I have just raised a ticket with support to ask what they are doing to address this problem. Suggest everyone bombards them until they resolve the issue.
I have been running my house with Tado Smart Thermometers for a couple of years, very happy with the solution. I decided to "upgrade" the upstairs, replace the 4 TRV's on my radiators with the Smart Thermostats (due to the nice cheap price at the moment. Having installed and played for a couple of days, I am so disappointed. They really don't work at all well, when the room is cold / radiator is off, they give an accurate reading, but as soon as the radiator comes on (say at 19 degrees), the STRV thinks it is something like 24 and turns the radiator off. I am on the verge of returning these, we just have cold bedrooms now, they are not fit for purpose at all. I'm half tempted to buy another 4-pack and use them as remote thermostats, or follow MHUHX advise and rebuild as a sensor, but wow, what an inelegant solution! What terrible customer service. Feeling very annoyed with Tado at the moment, the silence on this issue is really not acceptable, they got this product very wrong indeed