In my Bathroom I’m using an electric heater. There is a temperature sensor on board, nevetheless this is not accurate. I added a separate temperature sensor in the bathroom which is placed on a better position.
Now I would like to use the Climate Card (as I use for other rooms/thermostats as well) but would like to change the actual temperature of the Heater with the measurement from the sensor. Is that possible in any way?
Heater: Eurom Alutherm, controlled by Tuya
Integration: Tuya Local
Sensor: Aqara temperature sensor
Ok ok, I managed to get it working myself (with lot’s of try-ing and error-ing). Perhaps as input for other HA starters?
First of all I learned not to use the ‘normal’ Thermostat card, instead I used the Generic Thermostat
# Thermostat
climate:
- platform: generic_thermostat
name: Thermostat Bathroom
heater: switch.bathroom_heater_switch
target_sensor: sensor.bathroom_sensor_temperature
target_temp_step: 0.5
precision: 0.1
Target Sensor off course is the separate sensor in the bathroom.
I had to apply one trick here. As this Generic Thermostat in designed to be used with a wall switch, not directly with a tuya controlled heater. I’ve created a ‘switch’ which changes the attribute of my heater:
#Bathroom Heater to Switch
- platform: template
switches:
bathroom_heater_switch:
turn_on:
service: climate.set_hvac_mode
data:
hvac_mode: heat
target:
entity_id: climate.bathroom_heater
turn_off:
service: climate.set_hvac_mode
data:
hvac_mode: "off"
target:
entity_id: climate.bathroom_heater
The set temperature I’ve controlled from another automation (time / location / etc. based). By calling the ‘climate.set_temperature’ service in that automation.
- service: climate.set_temperature
data:
temperature: 18
target:
entity_id: climate.thermostat_bathroom
Hopefully this post is clear enough to understand what I’ve been doing here. In best case it lead up to some inspiration 
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