Home-AssistantConfig/config/packages/climate.yaml

# --------------------------------------------------
#  AC Filter‑change runtime tracker
# --------------------------------------------------

input_datetime:
  downstairs_last_filter_change:
    name: Downstairs Last Filter Change
    has_date: true
    has_time: true
  upstairs_last_filter_change:
    name: Upstairs Last Filter Change
    has_date: true
    has_time: true

# ---------------------------------------------------------------------------
#  Binary sensors – true when the thermostat reports the compressor is running
# ---------------------------------------------------------------------------
binary_sensor:
  - platform: template
    sensors:
      downstairs_ac_cooling:
        friendly_name: "Downstairs AC is Cooling"
        value_template: >
          {{ state_attr('climate.downstairs', 'hvac_action') == 'cooling' }}
      upstairs_ac_cooling:
        friendly_name: "Upstairs AC is Cooling"
        value_template: >
          {{ state_attr('climate.upstairs', 'hvac_action') == 'cooling' }}

sensor:
  - platform: template
    sensors:
      downstairs_ac_cooling_numeric:
        friendly_name: "Downstairs AC Cooling Numeric"
        value_template: "{{ 1 if is_state('binary_sensor.downstairs_ac_cooling', 'on') else 0 }}"
      upstairs_ac_cooling_numeric:
        friendly_name: "Upstairs AC Cooling Numeric "
        value_template: "{{ 1 if is_state('binary_sensor.upstairs_ac_cooling', 'on') else 0 }}"

  - platform: integration
    name: Downstairs AC Runtime Raw
    source: sensor.downstairs_ac_cooling_numeric
    unit_time: h
    method: left
    round: 2
  - platform: integration
    name: Upstairs AC Runtime Raw
    source: sensor.upstairs_ac_cooling_numeric
    unit_time: h
    method: left
    round: 2

# ---------------------------------------------------------------------------
#  Utility‑meters that act like odometers (reset when you swap the filter)
# ---------------------------------------------------------------------------
utility_meter:
  downstairs_ac_runtime_since_last_filter_change:
    source: sensor.downstairs_ac_runtime_raw
    cycle: none        # never auto‑reset
  upstairs_ac_runtime_since_last_filter_change:
    source: sensor.upstairs_ac_runtime_raw
    cycle: none

script:
  reset_downstairs_filter:
    alias: Reset Downstairs Filter
    mode: queued
    sequence:
      - service: input_datetime.set_datetime
        data:
          entity_id: input_datetime.downstairs_last_filter_change
          datetime: "{{ now().strftime('%Y-%m-%d %H:%M:%S') }}"
      - service: utility_meter.reset
        target:
          entity_id: utility_meter.downstairs_ac_runtime_since_last_filter_change

  reset_upstairs_filter:
    alias: Reset Upstairs Filter
    mode: queued
    sequence:
      - service: input_datetime.set_datetime
        data:
          entity_id: input_datetime.upstairs_last_filter_change
          datetime: "{{ now().strftime('%Y-%m-%d %H:%M:%S') }}"
      - service: utility_meter.reset
        target:
          entity_id: utility_meter.upstairs_ac_runtime_since_last_filter_change

automation:
  - alias: Notify Downstairs Filter Change Due
    description: Notify when downstairs runtime exceeds threshold since last filter change
    trigger:
      - platform: numeric_state
        entity_id: sensor.downstairs_ac_runtime_since_last_filter_change
        above: 800      # hours
    action:
      - service: script.notify_engine        # <-- keep your existing notify helper
        data:
          title: "Home Maintenance Reminder"
          value1: "It's time to change your Downstairs AC filter."
          value2: >
            Runtime has exceeded 800 h. Last changed {{ ((now() - states.input_datetime.downstairs_last_filter_change.last_changed).total_seconds() / 86400) | round(0) }} days ago.
          who: "Carlo"
          group: "maintenance"
          level: "active"

  - alias: Notify Upstairs Filter Change Due
    description: Notify when upstairs runtime exceeds threshold since last filter change
    trigger:
      - platform: numeric_state
        entity_id: sensor.upstairs_ac_runtime_since_last_filter_change
        above: 450      # hours
    action:
      - service: script.notify_engine
        data:
          title: "Home Maintenance Reminder"
          value1: "It's time to change your Upstairs AC filter."
          value2: >
            Runtime has exceeded 450 h. Last changed {{ ((now() - states.input_datetime.upstairs_last_filter_change.last_changed).total_seconds() / 86400) | round(0) }} days ago.
          who: "Carlo"
          group: "maintenance"

  
  - alias: Prevent Upstairs Nest Below 76
    id: 7812fdaf-a3f8-498b-8f07-28e977e528ff
    trigger:
      - platform: numeric_state
        entity_id: climate.upstairs
        attribute: temperature
        below: 76
    action:
      - delay: "00:03:00"
      - service: climate.set_temperature
        data:
          entity_id: climate.upstairs
          temperature: 77