Homeassistant blueprint to switch heater on or off depending on window or door sensor

window_controlled_heater.yaml

blueprint:
  name: window controlled heater
  description: turn on/off heater when opening/closing window or door sensor
  domain: automation
  source_url: https://gist.github.com/dirkk1980/8ba849b480844b32e9ca484e6de5d552
  input:
    heating_target:
      name: Heater
      selector:
        entity:
          domain: climate
    #entity is not specified cause it should also be possible to use groups
    window_entity:
      name: Window Sensor
      selector:
        entity:

variables:
  heating_target: !input heating_target
  heating_temperature: "{{ state_attr(heating_target, 'temperature') }}"

trigger:
  platform: state
  entity_id: !input window_entity
  from: "off"
  to: "on"

action:
  - service: climate.set_hvac_mode
    entity_id: !input heating_target
    data:
      hvac_mode: "off"
  - wait_for_trigger:
      platform: state
      entity_id: !input window_entity
      from: "on"
      to: "off"
  - service: climate.set_hvac_mode
    entity_id: !input heating_target
    data:
      hvac_mode: "heat"
  - service: climate.set_temperature
    entity_id: !input heating_target
    data:
      temperature: "{{heating_temperature}}"