Hello. I’ve got a Google Nest in place which controls our central heating. Now, I’m about to install Home Assistant with a Zigbee dongle and I would like to have room by room temperature control.
Would you have any recommendations of smart thermostatic radiator valve (TRV)? Preferably to work over wifi or zigbee.
My plan is to also have separate temperature sensors, one in each room, (so not to rely on the TRV sensor which would be too close to the heat source), like the Aqara temperature and humidity sensor, and to keep the Nest as the thermostat and boiler controller.
To summarise:
gas boiler
nest thermostat
aqara temperature sensor
what would be some good smart TRV to fit my radiators with?
Hi asanseau, I have the same infrastructure with same question. I will appreciate it if some one can share their valuable experience with us.
Thanks,
Ilhan
I have smart trv and temeprature sensors but I don’t have smart thermostat as I didn’t find a solution for my Buderus 2107. But it has build in automation.
I use temperature sensor and smart trv.
Temperature difference between two sensor is marginal, up to 0.5 Celsius but it should be taken in consideration that trv sensor is measuring temperature around one meter from the floor and other temperature sensor measures temperature around 20 centimeters from the floor.
This is my first winter with smart trv.
When your heater start heating radiators the heat is sent to the radiators that have less resistance. There smart trv comes handy. They can be programmed to adjust opening of radiator valves on the fly based on temperature and current programming.
This mean that you can adjust system to send more heat in rooms that need heat and less heat to the rooms or part of the house that doesn’t need so much heating.
For example kitchen and dinning room are always hotter then upper bedroom because they get heat from cooking. So they need less radiator heat.
The thing is that from energy point of view it’s not the same will heater heat 5, 10, or 20 radiators.
With smart trv you can adjust temperature per radiator and per room in a way that heater uses less energy to heat all parts of the house equailly.
The down side, expect price of smart trv, is battery consumption. It does uses batteries but how long will they last depends on how many times per day smart trv is opening and closing valves. For me around two months for a valves that are frequently open and closed.