Home Assistant

Home Assistant

The bridge doesn't announce itself through MQTT discovery (yet), so the unit is added with a few lines of YAML. Replace livingroom with your device name.

Remove the unit from Home Assistant's own midea integration first, or switch that integration off. Most Wi-Fi modules accept only one connection, and two clients will keep pushing each other off.

Climate entity

In configuration.yaml:

mqtt:
  climate:
    - name: "Living room AC"
      unique_id: midea2mqtt_livingroom
      availability:
        - topic: midea2mqtt/bridge/status
        - topic: midea2mqtt/livingroom/availability
      availability_mode: all

      # mode, including "off"
      modes: ["off", "auto", "cool", "dry", "heat", "fan_only"]
      mode_state_topic: midea2mqtt/livingroom/state
      mode_state_template: "{{ value_json.mode if value_json.power else 'off' }}"
      mode_command_topic: midea2mqtt/livingroom/set
      mode_command_template: >-
        {% if value == 'off' %}{"power": false}{% else %}{"mode": "{{ value }}"}{% endif %}

      # set point
      temperature_state_topic: midea2mqtt/livingroom/state
      temperature_state_template: "{{ value_json.targetTemperature }}"
      temperature_command_topic: midea2mqtt/livingroom/set/targetTemperature
      min_temp: 16
      max_temp: 30
      temp_step: 0.5
      precision: 0.5
      temperature_unit: C

      # sensors
      current_temperature_topic: midea2mqtt/livingroom/state
      current_temperature_template: "{{ value_json.indoorTemperature }}"
      current_humidity_topic: midea2mqtt/livingroom/state
      current_humidity_template: "{{ value_json.indoorHumidity | default(none) }}"

      # fan
      fan_modes: ["auto", "silent", "low", "medium", "high", "full"]
      fan_mode_state_topic: midea2mqtt/livingroom/state
      fan_mode_state_template: "{{ value_json.fanSpeed }}"
      fan_mode_command_topic: midea2mqtt/livingroom/set/fanSpeed

      # swing
      swing_modes: ["off", "vertical", "horizontal", "both"]
      swing_mode_state_topic: midea2mqtt/livingroom/state
      swing_mode_state_template: "{{ value_json.swing }}"
      swing_mode_command_topic: midea2mqtt/livingroom/set/swing

      # presets ("none" is added by Home Assistant itself and clears the preset)
      preset_modes: ["eco", "comfort", "boost", "sleep", "away"]
      preset_mode_state_topic: midea2mqtt/livingroom/state
      preset_mode_value_template: "{{ value_json.preset }}"
      preset_mode_command_topic: midea2mqtt/livingroom/set/preset

How it maps:

• Home Assistant's off mode becomes {"power": false}. Selecting any other mode sends {"mode": ...}, which also switches the unit on.
• The state template shows off whenever power is false, even though the unit keeps reporting its last mode.
• set/<key> topics take Home Assistant's plain payloads directly, so fan, swing, preset and temperature need no command template.
• Remove swing_modes entries your unit doesn't have (check capabilities), and drop current_humidity_* if it doesn't report humidity.

Energy sensors

If the unit reports energy:

mqtt:
  sensor:
    - name: "Living room AC power"
      unique_id: midea2mqtt_livingroom_power
      state_topic: midea2mqtt/livingroom/state
      value_template: "{{ value_json.realtimePower | default(none) }}"
      unit_of_measurement: W
      device_class: power
      state_class: measurement
      availability:
        - topic: midea2mqtt/bridge/status
        - topic: midea2mqtt/livingroom/availability
      availability_mode: all

    - name: "Living room AC energy"
      unique_id: midea2mqtt_livingroom_energy
      state_topic: midea2mqtt/livingroom/state
      value_template: "{{ value_json.totalEnergyConsumption | default(none) }}"
      unit_of_measurement: kWh
      device_class: energy
      state_class: total_increasing

    - name: "Living room outdoor temperature"
      unique_id: midea2mqtt_livingroom_outdoor
      state_topic: midea2mqtt/livingroom/state
      value_template: "{{ value_json.outdoorTemperature | default(none) }}"
      unit_of_measurement: "°C"
      device_class: temperature
      state_class: measurement

The energy sensor can go straight into the Energy dashboard.

Switches for extra features

Example for the display; the same pattern works for every boolean key (breezeless, outdoorSilent, sound, ...):

mqtt:
  switch:
    - name: "Living room AC display"
      unique_id: midea2mqtt_livingroom_display
      state_topic: midea2mqtt/livingroom/state
      value_template: "{{ 'ON' if value_json.screenDisplay else 'OFF' }}"
      command_topic: midea2mqtt/livingroom/set/screenDisplay
      payload_on: "on"
      payload_off: "off"
      state_on: "ON"
      state_off: "OFF"

Automations

Any MQTT publish works, for example to switch off when a window opens:

action:
  - action: mqtt.publish
    data:
      topic: midea2mqtt/livingroom/set
      payload: '{"power": false}'