Looking for TRVs.
Criteria i have
- Reporting of valve position
- Easy bettery replacement
- As a dream - ability to set valve position manually
- Boost mode
- Good integration with HA
- Nice design
Currently tested 4 types
- Zigbee2Mqtt states its Saswell SEA801-Zigbee/SEA802-Zigbee control via MQTT | Zigbee2MQTT
I have the one of the left with rotary knob. A little bit different design
Would be a hands down winner for hardware and design except for that it doesn’t expose any of the settings. So no valve control or status is possible. But easy manual control. You just rotate the knob and thats it. Battery replacement is easy. You just remove the unit, change them, twist back on. Sturdy construction.
- Zigbee2Mqtt states its TuYa TS0601_thermostat control via MQTT | Zigbee2MQTT
The smartest i have the worst in engineering design.
Reports valve position, boost mode almost works (there is a bug in zigbee2mqtt), good integration into HA (but with some bugs with the mode settings (just scroll though issues on github for zigbee2mqtt)). Only options is to force fully open or fully close.
But has a serious flow. Battery compartment design is a nightmare if used horizontally. Because of this lid holding notches break easily plastic is less than 1mm thin on this parts). So i have 2/4 gone in less than 6 months/ Local control is complicated. It’s touch sensitive and the sensivity is not that good. You have to wake up the screen first and than find those small ± lit on it.
Softtouch. Excellent design. Could even live with that the screen is on the side. Battery replacement as easy as in the first one. Poor integration into HA (many modes including “cooling”. That are bugs on the zigbee 2 mqtt side. ) Main disapointment doesn’t report valve status. It states it does. In fact “sometimes” can be like once in a week
- Zwave Eurotronic
Looks outdated. Easy manual control. Easy battery replacement. No control or status on the valve. Good integration into HA
So this is the experience i have. Need around 10 more TRVs so your experience is greatly appreciated