gsw-homeassistant-blueprints/storage_ventilation.yaml at main · Iakovosv/gsw-homeassistant-blueprints · GitHub

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blueprint:
  name: "GSW: Smart Ventilation Control"
  description: >
    ## 🌬️ Absolute Humidity & Dew Point Controller

    This automation manages ventilation by comparing the Absolute Humidity (g/m³)
    between indoor and outdoor environments.

    **Developer:** Iakovos Venieris

    **Project:** [Greece Sky and Weather](https://www.youtube.com/@GreeceSkyandWeather)

    **Requirements:** [Thermal Comfort Integration](https://github.com/dizzyit/thermal_comfort) (for Absolute Humidity & Dew Point sensors).

  domain: automation
  input:
    bathroom_ah_sensor:
      name: "Bathroom Absolute Humidity"
      description: "Select the sensor that provides Absolute Humidity (g/m³) for the bathroom."
      selector:
        entity:
          domain: sensor
    indoor_ah_sensor:
      name: "Indoor Absolute Humidity"
      description: "Select the baseline Absolute Humidity sensor (e.g., from the Living Room)."
      selector:
        entity:
          domain: sensor
    outdoor_ah_sensor:
      name: "Outdoor Absolute Humidity"
      description: "Select the sensor that provides outdoor Absolute Humidity (g/m³)."
      selector:
        entity:
          domain: sensor
    bathroom_dew_point:
      name: "Bathroom Dew Point"
      description: "Select the Dew Point sensor for the bathroom."
      selector:
        entity:
          domain: sensor
    bathroom_temp:
      name: "Bathroom Temperature"
      description: "Select the temperature sensor for the bathroom."
      selector:
        entity:
          domain: sensor
          device_class: temperature
    fan_switch:
      name: "Ventilation Switch"
      description: "Choose the fan or switch that controls the bathroom ventilation."
      selector:
        target:
          entity:
            domain:
              - switch
              - fan
    alarm_panel:
      name: "Security System (Optional)"
      description: "If selected, the automation will only run when the alarm is disarmed."
      default: []
      selector:
        entity:
          domain: alarm_control_panel

variables:
  b_ah: !input bathroom_ah_sensor
  i_ah: !input indoor_ah_sensor
  o_ah: !input outdoor_ah_sensor
  b_dp: !input bathroom_dew_point
  b_t: !input bathroom_temp
  fan_target: !input fan_switch
  alarm_entity: !input alarm_panel

trigger:
  - platform: time_pattern
    seconds: "/30"

condition:
  - condition: and
    conditions:
      - condition: template
        value_template: >
          {{ alarm_entity == [] or is_state(alarm_entity, 'disarmed') }}
      - condition: template
        value_template: >
          {% set entity_list = fan_target.entity_id if fan_target.entity_id is list else [fan_target.entity_id] %}
          {{ is_state(entity_list[0], 'off') }}
      - condition: or
        conditions:
          - condition: and
            conditions:
              - condition: template
                value_template: "{{ states(b_ah)|float(0) > states(i_ah)|float(0) + 1 }}"
              - condition: template
                value_template: "{{ states(b_ah)|float(0) > states(o_ah)|float(0) + 1 }}"
          - condition: template
            value_template: "{{ states(b_ah)|float(0) >= 14.5 }}"

action:
  - action: switch.turn_on
    target: !input fan_switch

  - delay:
      minutes: >
        {% set diff = states(b_ah)|float(0) - states(o_ah)|float(0) %}
        {% if diff > 5 %} 60
        {% elif diff > 3 %} 30
        {% elif (states(b_dp)|float(0) > (states(b_t)|float(0) - 2)) %} 30
        {% else %} 15
        {% endif %}

  - choose:
      - conditions:
          - condition: template
            value_template: >
              {{
                (states(b_ah)|float(0) <= 14) and
                ((states(b_ah)|float(0) <= (states(i_ah)|float(0) + 1)) or
                 (states(b_ah)|float(0) <= (states(o_ah)|float(0) + 1)))
              }}
        sequence:
          - action: switch.turn_off
            target: !input fan_switch