Hi all,
I have plans to buy a few Radiator Thermostat Basic HmIP-eTRV-B devices.
I also have a Homey Pro and I would like to connect those thermostat heads to my Homey.
Do I need something else besides the HmIP-eTRV-B devices, or will the Homey recognize and accept immediately the new devices?
Thx,
JST (a newbie)
Hi Jst,
You can check it in homey.app store:
When your specific device isn’t listed, it’s pretty sure you can’t connect it to Homey.
Only Matter devices, and basic Zigbee & Z-wave devices like lights, plugs and switches can be connected without need for an app or support by an existing app.
Hi Peter,
I understand, but (without having a Homematic device yet), I can see in Homey Pro, when I want to add a new device, that this HmIP-eTRV-B is in the list, so I assume I will be able to add it, once the device is physically present.
My question actually is, do I need anything else, like a Homematic hub, or an an or something, in order to make these thermostat heads work?
So, in fact, on Am****n, where I want to buy these heads, I also see the Homematic IP Access Point. I was therefore wondering, does Homey Pro communicate directly with the thermostat heads, or do I need this access point as an intermediate communication hub? After all, it is 64+ euros 
Hi Johan,
please check the info in the Homey App Store:
So you need a Homematic CCU2, CCU3 or RaspberryMatic, more or less a DIY CCU.
A Homematic IP Access Point doesn’t work!!!
Since the Homey Homematic app hasn’t been updated for several years, I’d advise against using Homematic.
There is another Homey Homematic app available that has been slightly updated…
…but my requests have not been answered: GitHub · Where software is built
Athom had already asked eQ-3, the manufacturer of Homematic, whether they would be willing to program a Homey app, but as far as I know, this request was also not answered.
However, Athom would like to approach eQ-3 employees again at the IFA in Berlin.
Further information about the Homey Homematic app and the whole mess can be found in the corresponding app topic: [APP][Pro] Homematic App - Connect Homematic with Homey
Thanks Dirk. That clears up quite alot.
I was already looking into this, using my Synology, but it seems like I have to make some modifications to my network for this. I have to check on that.
Do you think it would be easier using a Raspberry Pi for this (I still have one or two unused PI3’s in my drawer here…)
Yeah, like I wrote. I just don’t get why folks don’t read the actual info 
we try to point to.
(nothing personal, Johan! You’re not the 1st and certainly not the last) 
OK, the decision is made: no Homematic will be purchased
Thanks, Dirk & Peter, that was good advice.
But that brings up another question: Can you recommend another type/brand of thermostat heads? One that will not give me a headache 
Personally, I would choose a thermostat that works without an additional bridge and cloud. But the question is, which wireless protocol you want to use and can use.
If you want to use Z-Wave or Zigbee, you will usually need a solid mesh/network of so-called actuators or repeaters, please check these articles for Z-Wave and for Zigbee. However, most Z-Wave thermostats have a relatively long response time. Z-Wave thermostats that support FLiRS have a very fast response time, but they often seem to have communication problems.
The Bluetooth range of a Homey Pro is not good enough to cover an entire apartment or house.
There are only very few compatible thermostats with WiFi.
If you have a Homey Pro (early 2023), you can also use thermostats with Matter or Thread. However, Matter and Thread are relatively new on the market, and it’s possible that not all features are supported yet.
A Zigbee thermostat would be my preferred solution at the moment. However, I also have a well-developed Zigbee mesh/network. I use the Smart Thermostat from POPP myself and am very satisfied overall.
You can also take a look at the “Best Buy Guide” for thermostats → Smart Radiator Valves – Best Buy Guide | Homey
