Eve Thermo - Matter

Eve has started an invite-based beta for the matter firmware for their Eve thermo thermostats. I upgraded a bunch of them and they work really well in Home Assistant:

Before I did it with Homekit but they lost connection after like half an hour and never came back, but with Matter they are rock solid and didn’t lose connection yet (3 days in)

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I read under , that after the Firmware-Upgrade, which enables Matter on the Eve Thermo, you cannot control off/on status via Apple Home App anymore. How was that according to your experience in Home Assistant with Matter? Can you fully control the device?

Yes, on/off status works in HA

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How did you get the invite? I did find a link (from googling), but it was password protected. Did they ask you, or was it a register interest thing?

Edit: Ignore me, found a link (in case anyone wants EA) Eve Thermo – Early Access Program| evehome.com

Can you control the temperature offset for calibration from HA? I‘m missing this feature in the Homekit integration and its the only reason to keep the Eve app installed (well, besides firmware upgrades, which probably aren‘t supported in HA either?)

I tried to upgrade - I see in the EVE app the possibility to upgrade, by clicking on it

IOS version up to date - green
Thread Network available - red
Connected via Thread - green
Battery Level - green

now I can’t continue - remark is to add a HomePod mini or Apple TV 4K

I have a Google Nest and a Conbee II as Open Thread router - how can I get the update starting?

Thank you for your help in advance!

Just read the doc: Getting started with Matter | evehome.com

System requirements

Make sure a Thread Border Router capable Home Hub like a HomePod (2nd gen.), HomePod mini or Apple TV 4K (2nd gen. / 3rd gen. 128 GB) is connected to your network, updated to version 16.4 (or later).

Update HomePod mini by choosing Home Settings > Software Update in Apple Home. On Apple TV, choose Settings > System > Software Updates and select Update Software.

Upgrading the firmware on an Eve device to Matter requires an iPhone or iPad running iOS/iPadOS 16.4 (or later).

Thnx for the response - but I need a IPod Home or Apple TV? Why not possible with Google hub or other Open Thread Router? Then only for upgrading the Eve thermo I need to by IPod Home or Apple TV - there are no work arounds with Google Hub (this I see in HA as border router and I also added Conbeey II with firmware as OTR in HA)

Because it’s not supported at the moment because of Google. You can buy a second-hand HomePod mini.

Check this out: Eve’s upcoming Android app is ‘turbo-charged’ by Google Home APIs - The Verge.

Replying to myself, now that I upgraded a Eve Thermo to Matter myself: No, the calibration variable is not exposed to Matter, it’s only configurable in the Eve iOS app. That’s unfortunate.

Are you still happy @vigonotion ?
Can you also controll the temperature via matter?

This parameter corresponds to the LocalTemperatureCalibration attribute of the Thermostat cluster.
It is not displayed in the web interface.

So that’s a limitation of the current Matter specs? In that case I’m probably replacing my Thread devices with Zigbee devices. Matter just isn’t ready for prime time. It’s frustrating, I purchased a ton of Homekit/Thread devices a few years ago on the promise of Matter being the new standard. I should have purchased much cheaper Zigbee items back then.

No. It’s just that Home Assistant’s Matter client integration doesn’t show this parameter because it’s not implemented in HA.

Thanks for the info! Do you know if the integration of this parameter is on the roadmap, and if so, how soon it might be implemented? With the heating season starting in a few weeks, it would be great to have TRVs calibrated accurately. Since calibration depends on the outside temperature, it can’t be a one-time process – it needs adjusting whenever the daily average temperature shifts by more than 5°C.

EDIT: I just noticed that “Valve Position” is also missing from Eve Thermo when setup as Matter device, see the comparison of two identical devices, once as Homekit device, once as Matter device:


Ludovic, I just realised that you’re an active contributor to python-matter-server and recently contributed additional Eve Weather custom attributes. So maybe you’re even the person who will contribute the Eve Thermo attributes as well (personally I’m looking forward to calibration, but others might appreciate child lock, valve protection and transmit power). Anyway, thank you very much for your contributions and presence here in the forums.

You can create a feature request for this.
I’ve got a lot of PR to deal with at the moment and I’m not a professional developer. I’m doing this in my spare time.

Thanks, will do. Where’s the right place, in Issues · home-assistant-libs/python-matter-server · GitHub or in Issues · home-assistant/core · GitHub ?

Here: Feature Requests - Home Assistant Community

In the HA forums the feature request has already been posted in February 2024: Eve Thermo over Matter: Add internal temp offset entity .