What's the best TRV for my requirements?

Hardware
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1

Dear all,
I am planning to get new TRVs for the entire house but the more I read about possible options, the more confused I am.

First, I wanted to go with Aqara E1, but many reviews say it is too loud.
Then, I decided for Sonoff TRVZB, but after reading tons of reviews, I saw that people are complaining that the valve cannot be partially opened. It either fully opened or closed. I guess that’s not the best solution when it comes to saving energy with the heat pump??
I also checked a bunch of others but still I am not sure which one would work best. So, recommendations would be highly recommended!.

Here is what I need:

  • continuously adjustable vavle (not only on and off)
  • should be silent (let people sleep)
  • reading of the screen is on the long side of the cylinder
  • wide range of functions and flexibility/automations,e.g.
    • record current state (heating/note heating)
    • works with external (aqara) thermohygrometers for open window detection
  • long battery life
  • 5 WiFi TRVs
  • 10 zigbee/other TRVs

I need around 15 TRVs for 2 appartments. For the smaller appartment (rent out), I think WiFi would be better for the tenant (no hub needed). For my appartment, if it’s Zigbee, it should work with zigbee2mqtt. I do not have matter or other devices yet, but I am open to it.

Please, tell me what you think and what you are using.

Thanks!

2

Hi,

As I’m looking in to TRVs myself, I was wondering what you ended up buying and if you like them?

3

I bought 10 Bosch Thermostat II and are quite happy with them.

4

Sonoff TRZB work great for my use case. I have ten of them. Wait for them to be on offer at Amazon. Picked up pairs of them for GBP 44 which is good value. Takes three AA batteries and so far has lasted a year - dropping from 100% to only 95%.
They are not completely silent, but I don’t think any motorised TRV will ever be. It’s a background whirring noise for a few seconds when activated.
These do not do continuous adjustment. And I’m now not convinced that any TRV that claims to do so would actually work. There really is no way that I can think of for an automation system to “know” exactly how far to push a TRV valve-pin that correlates to a certain temperature.
Hence the digital, fully on or fully off approach works well… And you’re then using the temperature sensor built into the Trv. These work well enough for me, but I know some people have successfully used separate temperature sensors in the room.
Hope that helps.