climate:
  - platform: climate_template
    name: Bedroom Aircon
    modes:
      - "auto"
      - "dry"
      - "off"
      - "cool"
      - "fan_only"
    min_temp: 16
    max_temp: 30

    # get current temp.
    current_temperature_template: "{{ states('sensor.bedroom_temperature') }}"

    # get current humidity.
    current_humidity_template: "{{ states('sensor.bedroom_humidity') }}"

    # swing mode switch for UI.
    swing_mode_template: "{{ states('input_boolean.bedroom_swing_mode') }}"

    # available based on esphome nodes' availability.
    availability_template: "{{ is_state('binary_sensor.bedroom_node_status', 'on') }}"

    # example action
    set_hvac_mode:
      # allows me to disable sending commands to aircon via UI.
      - condition: state
        entity_id: input_boolean.enable_aircon_controller
        state: "on"

      # send the climates current state to esphome.
      - service: esphome.bedroom_node_aircon_state
        data:
          temperature: "{{ state_attr('climate.bedroom_aircon', 'temperature') | int }}"
          operation_mode: "{{ states('climate.bedroom_aircon') }}"
          fan_mode: "{{ state_attr('climate.bedroom_aircon', 'fan_mode') }}"
          swing_mode: "{{ is_state_attr('climate.bedroom_aircon', 'swing_mode', 'on') }}"
          light: "{{ is_state('light.bedroom_aircon_light', 'on') }}"

      # could also send IR command via broadlink service calls etc.

climate:
  - platform: climate_template
    # ...
    set_hvac_mode:
      # allows you to control an existing Home Assistant HVAC device
      - service: climate.set_hvac_mode
        data:
          entity_id: climate.bedroom_ac_nottemplate
          hvac_mode: "{{ states('climate.bedroom_ac_template') }}"