Send target temperature from thermostat to radiators - homeassistant blueprint

send_target_temperature.yaml

blueprint:
  name: Send target temperature from a room thermostat to a climate target
  description: Sends a target temperature from a thermostat to a climate target (radiators) which can be one or multiple areas/entities/devices.
  domain: automation
  source_url: https://gist.github.com/wittypluck/2638cc4dec50bba5ddf4e946b735c94a
  input:
    climate_source:
      name: Source thermostat
      description: Climate entity which will send the temperature update
      selector:
        entity:
          domain: climate    
    climate_target:
      name: Target radiators
      description: Climate target which will get the temperature update
      selector:
        target:
          entity:
            domain: climate

variables:
  climate_source: !input climate_source
  
trigger:
- platform: state
  entity_id: !input climate_source

condition:
- condition: template
  value_template: >-
    {% if (trigger.to_state and trigger.from_state) %}
      {{ trigger.to_state.attributes.temperature != trigger.from_state.attributes.temperature }}
    {% endif %}

mode: queued

action:
- service: climate.set_temperature
  target: !input climate_target
  data_template:
    temperature: "{{ state_attr(climate_source, 'temperature') }}"