blueprint.yaml

blueprint:
  name: Tado temperature offset beta
  description: Ensure the Tado smart valve has the temp of a separate sensor
  domain: automation
  input:
    source_temp_sensor:
      name: Source Temperature sensor
      description: This sensor will be used as the source.
      selector:
        entity:
          domain: sensor
          device_class: temperature
    target_tado:
      name: Tado
      description: The Tado to set the offset on.
      selector:
        entity:
          domain: climate

variables:
  tolerance: 1
  target_tado: !input target_tado
  source_temp_sensor: !input source_temp_sensor
  #early_start: ("binary_sensor." ~ target_tado ~ "_early_start")|regex_replace("climate.", ignorecase=True)
  tado_temp: "{{ state_attr(target_tado, 'current_temperature') | float }}" # Temp tado thinks it's at
  current_offset: "{{ state_attr(target_tado, 'offset_celsius') }}" # Tado sensors offset
  tado_real_temp: "{{ ( tado_temp - current_offset) | float }}" # The temperature measured at the tado sensor
  actual_temp: "{{ states(source_temp_sensor) | float }}" # Temperature measured by the other sensor
  offset: "{{ ( actual_temp - tado_temp ) | round }}" # Difference between the two sensors, as they are currently calibrated
  calculated_offset: "{{ (offset + current_offset ) | round }}" # The offset needed on the tado sensor to best equilibrate the two sensor measurements
  #raw_calculated_offset: "{{ (offset + current_offset ) | round }}" # The offset needed on the tado sensor to best equilibrate the two sensor measurements
  #calculated_offset: "{% if (tado_real_temp - actual_temp) | float > 1 %}{{raw_calculated_offset * 2}}{% else %}{{raw_calculated_offset}}{% endif %}" # If the the tado sensor temperature is alot higher than the other sensor, the double the offset, this causes the tado to aim to overshoot the temperature and reduces the chance of it going on and off many times
  last_updated: "{{ state_attr(source_temp_sensor, 'offset_last_changed') if state_attr(source_temp_sensor, 'offset_last_changed') != None else utcnow() - timedelta(seconds=(900|int +100)) }}"

trigger:
- platform: state
  entity_id: !input target_tado
  attribute: current_temperature
- platform: state
  entity_id: !input source_temp_sensor
  # Because I have a condition to only adjust offset when in home mode, I also want to trigger when I get home to immediately sync temp
- platform: state
  entity_id: !input target_tado
  attribute: preset_mode
  to: home
- platform: state
  entity_id: !input target_tado
  attribute: hvac_action
- platform: template
  value_template: "{{ offset >= 1 }}" 

condition: 
# Only run if temp states are a number i.e. hasn't become 'unavailable'
- "{{ tado_temp|int != 0 or tado_temp == '0' }}"
- "{{ actual_temp|int != 0 or actual_temp == '0' }}"
# Only run if the climate device is preset is 'home' or if 'early start' has been activated or offset is more than a difference of 2
- "{{ state_attr(target_tado, 'preset_mode') == 'home' or states(early_start) == 'on' or offset|float >= 2 or offset|float <= -2}}"
# Only run if new offset is different to current offset
- "{{ offset != 0 }}"
# Only run if there is a difference in temperature greater than the tolerance
- "{{ (actual_temp - tado_temp)|abs > tolerance }}"
# Only run if offset hasn't been changed for longer than 15 minutes
- "{{ ( as_timestamp(now()) - as_timestamp(state_attr('this', 'last_triggered')) |int(0) ) > 900 }}"
# Only change the offset if it is going to make a difference to hvac action (so will send above or below target temp based on current hvac action state)
- "{{ (state_attr(target_tado, 'hvac_action') == 'heating' and (tado_temp + calculated_offset) >= state_attr(target_tado, 'temperature')|float) or ((state_attr(target_tado, 'hvac_action') == 'idle' and (tado_temp + calculated_offset) <= state_attr(target_tado, 'temperature')|float))}}"

action:
- service: system_log.write
  data:
    message: >
      {{ target_tado }} has temp difference of {{ offset }}. Setting offset to {{ calculated_offset }}
    level: info
    logger: blueprints.tado.offset
- service: system_log.write
  data:
    message: >
      target: {{ target_tado }} 
      source: {{ source_temp_sensor }}
      temp difference: {{ offset }}
      actual_temp: {{ actual_temp }}
      tado_temp: {{ tado_temp }}
      current_offset: {{ current_offset }}
      calculated_offset: {{ calculated_offset }}
      heating_state : {{ state_attr(target_tado, 'hvac_action') }}
    level: debug
    logger: blueprints.tado.offset
- service: tado.set_climate_temperature_offset
  data:
    offset: "{{ calculated_offset }}"
    entity_id: "{{ target_tado }}"
mode: single