diff --git a/dashboards/views/03_andreas.yaml b/dashboards/views/03_andreas.yaml
index a161ab9..fab22b4 100644
--- a/dashboards/views/03_andreas.yaml
+++ b/dashboards/views/03_andreas.yaml
@@ -272,6 +272,15 @@ sections:
         entity: sensor.sovevaerelse_stue_carbon_dioxide
         name: CO₂
 
+  - type: grid
+    cards:
+      - type: heading
+        heading: Vindue
+
+      - type: tile
+        entity: binary_sensor.andreas_vindue
+        name: Vindue
+
   - type: grid
     cards:
       - type: heading
diff --git a/dashboards/views/04_daniel.yaml b/dashboards/views/04_daniel.yaml
index 3691a05..f99b73d 100644
--- a/dashboards/views/04_daniel.yaml
+++ b/dashboards/views/04_daniel.yaml
@@ -272,6 +272,15 @@ sections:
         entity: sensor.sovevaerelse_daniel_carbon_dioxide
         name: CO₂
 
+  - type: grid
+    cards:
+      - type: heading
+        heading: Vindue
+
+      - type: tile
+        entity: binary_sensor.daniel_vindue
+        name: Vindue
+
   - type: grid
     cards:
       - type: heading
diff --git a/dashboards/views/04b_sovevaerelse.yaml b/dashboards/views/04b_sovevaerelse.yaml
index 209c896..d2d76b5 100644
--- a/dashboards/views/04b_sovevaerelse.yaml
+++ b/dashboards/views/04b_sovevaerelse.yaml
@@ -141,3 +141,12 @@ sections:
       - type: tile
         entity: sensor.sovevaerelse_carbon_dioxide
         name: CO2
+
+  - type: grid
+    cards:
+      - type: heading
+        heading: Vindue
+
+      - type: tile
+        entity: binary_sensor.sovevaerelse_vindue
+        name: Vindue
diff --git a/dashboards/views/11_vedligehold.yaml b/dashboards/views/11_vedligehold.yaml
index 4ded514..9e57e65 100644
--- a/dashboards/views/11_vedligehold.yaml
+++ b/dashboards/views/11_vedligehold.yaml
@@ -1600,4 +1600,142 @@ sections:
         card:
           type: tile
           entity: sensor.garageport_batteri
+
+      - type: conditional
+        conditions:
+          - condition: state
+            entity: input_boolean.vis_alle_vedligehold
+            state: "on"
+        card:
+          type: tile
+          entity: sensor.sovevaerelse_vindue_batteri
+          name: Soveværelse vindue
+
+      - type: conditional
+        conditions:
+          - condition: state
+            entity: input_boolean.vis_alle_vedligehold
+            state: "off"
+          - condition: numeric_state
+            entity: sensor.sovevaerelse_vindue_batteri
+            below: 20
+        card:
+          type: tile
+          entity: sensor.sovevaerelse_vindue_batteri
+          name: Soveværelse vindue
+
+      - type: conditional
+        conditions:
+          - condition: state
+            entity: input_boolean.vis_alle_vedligehold
+            state: "on"
+        card:
+          type: tile
+          entity: sensor.daniel_vindue_batteri
+          name: Daniel vindue
+
+      - type: conditional
+        conditions:
+          - condition: state
+            entity: input_boolean.vis_alle_vedligehold
+            state: "off"
+          - condition: numeric_state
+            entity: sensor.daniel_vindue_batteri
+            below: 20
+        card:
+          type: tile
+          entity: sensor.daniel_vindue_batteri
+          name: Daniel vindue
+
+      - type: conditional
+        conditions:
+          - condition: state
+            entity: input_boolean.vis_alle_vedligehold
+            state: "on"
+        card:
+          type: tile
+          entity: sensor.andreas_vindue_batteri
+          name: Andreas vindue
+
+      - type: conditional
+        conditions:
+          - condition: state
+            entity: input_boolean.vis_alle_vedligehold
+            state: "off"
+          - condition: numeric_state
+            entity: sensor.andreas_vindue_batteri
+            below: 20
+        card:
+          type: tile
+          entity: sensor.andreas_vindue_batteri
+          name: Andreas vindue
+
+      - type: conditional
+        conditions:
+          - condition: state
+            entity: input_boolean.vis_alle_vedligehold
+            state: "on"
+        card:
+          type: tile
+          entity: sensor.badevaerelse_vindue_batteri
+          name: Badeværelse vindue
+
+      - type: conditional
+        conditions:
+          - condition: state
+            entity: input_boolean.vis_alle_vedligehold
+            state: "off"
+          - condition: numeric_state
+            entity: sensor.badevaerelse_vindue_batteri
+            below: 20
+        card:
+          type: tile
+          entity: sensor.badevaerelse_vindue_batteri
+          name: Badeværelse vindue
+
+      - type: conditional
+        conditions:
+          - condition: state
+            entity: input_boolean.vis_alle_vedligehold
+            state: "on"
+        card:
+          type: tile
+          entity: sensor.lille_bad_vindue_batteri
+          name: Lille bad vindue
+
+      - type: conditional
+        conditions:
+          - condition: state
+            entity: input_boolean.vis_alle_vedligehold
+            state: "off"
+          - condition: numeric_state
+            entity: sensor.lille_bad_vindue_batteri
+            below: 20
+        card:
+          type: tile
+          entity: sensor.lille_bad_vindue_batteri
+          name: Lille bad vindue
+
+      - type: conditional
+        conditions:
+          - condition: state
+            entity: input_boolean.vis_alle_vedligehold
+            state: "on"
+        card:
+          type: tile
+          entity: sensor.terrassedor_batteri
+          name: Terrassedør
+
+      - type: conditional
+        conditions:
+          - condition: state
+            entity: input_boolean.vis_alle_vedligehold
+            state: "off"
+          - condition: numeric_state
+            entity: sensor.terrassedor_batteri
+            below: 20
+        card:
+          type: tile
+          entity: sensor.terrassedor_batteri
+          name: Terrassedør
           name: Garageport sensor
\ No newline at end of file
diff --git a/include/automations/vinduer.yaml b/include/automations/vinduer.yaml
new file mode 100644
index 0000000..c605dd1
--- /dev/null
+++ b/include/automations/vinduer.yaml
@@ -0,0 +1,251 @@
+##################################################
+# Vindue-automationer (Aqara vinduesensorer)
+##################################################
+
+### Varme: Sluk varme når vindue åbnes, tænd igen når det lukkes
+### Rum-mapping: andreas, daniel, sovevaerelse, lille_bad
+
+  - alias: "Varme - sluk ved åbent vindue"
+    id: varme_sluk_ved_aabent_vindue
+    description: "Slukker varme i rummet når vinduet åbnes og genstarter når det lukkes"
+    mode: parallel
+    max: 4
+    trigger:
+      - platform: state
+        entity_id:
+          - binary_sensor.andreas_vindue
+          - binary_sensor.daniel_vindue
+          - binary_sensor.sovevaerelse_vindue
+          - binary_sensor.lille_bad_vindue
+        to: "on"
+    action:
+      - variables:
+          room_map:
+            binary_sensor.andreas_vindue: climate.andreas
+            binary_sensor.daniel_vindue: climate.daniel
+            binary_sensor.sovevaerelse_vindue: climate.sovev_prelse
+            binary_sensor.lille_bad_vindue: climate.lille_bad
+          climate_entity: "{{ room_map[trigger.entity_id] }}"
+          current_temp: "{{ state_attr(climate_entity, 'temperature') | float(20) }}"
+          current_mode: "{{ states(climate_entity) }}"
+      - service: scene.create
+        data:
+          scene_id: "vindue_varme_{{ trigger.entity_id.split('.')[1] }}"
+          snapshot_entities:
+            - "{{ climate_entity }}"
+      - service: climate.set_hvac_mode
+        target:
+          entity_id: "{{ climate_entity }}"
+        data:
+          hvac_mode: "off"
+      - wait_for_trigger:
+          - platform: state
+            entity_id: "{{ trigger.entity_id }}"
+            to: "off"
+        timeout: "04:00:00"
+        continue_on_timeout: true
+      - service: scene.turn_on
+        target:
+          entity_id: "scene.vindue_varme_{{ trigger.entity_id.split('.')[1] }}"
+
+### Notifikation: Vindue åbner og ingen er hjemme
+
+  - alias: "Vindue åbent - ingen hjemme"
+    id: vindue_aabent_ingen_hjemme
+    description: "Send notifikation til Claus hvis et vindue åbner og ingen er hjemme"
+    trigger:
+      - platform: state
+        entity_id:
+          - binary_sensor.andreas_vindue
+          - binary_sensor.daniel_vindue
+          - binary_sensor.sovevaerelse_vindue
+          - binary_sensor.badevaerelse_vindue
+          - binary_sensor.lille_bad_vindue
+          - binary_sensor.terrassedor
+        to: "on"
+    condition:
+      - condition: state
+        entity_id: binary_sensor.family_presence
+        state: "off"
+    action:
+      - variables:
+          vindue_navne:
+            binary_sensor.andreas_vindue: "Andreas' værelse"
+            binary_sensor.daniel_vindue: "Daniels værelse"
+            binary_sensor.sovevaerelse_vindue: "Soveværelset"
+            binary_sensor.badevaerelse_vindue: "Badeværelset"
+            binary_sensor.lille_bad_vindue: "Lille badeværelse"
+            binary_sensor.terrassedor: "Terrassedøren"
+          vindue_navn: "{{ vindue_navne[trigger.entity_id] }}"
+      - service: notify.mobile_app_claus_iphone_15pro
+        data:
+          title: "⚠️ Vindue åbnet - ingen hjemme"
+          message: "{{ vindue_navn }} er blevet åbnet, men der er ingen hjemme!"
+          data:
+            push:
+              sound:
+                name: default
+                critical: 0
+
+### Notifikation: Sidste person forlader huset med åbent vindue
+
+  - alias: "Forlader huset - vindue åbent"
+    id: forlader_huset_vindue_aabent
+    description: "Send notifikation hvis family_presence slår fra og vinduer er åbne"
+    trigger:
+      - platform: state
+        entity_id: binary_sensor.family_presence
+        from: "on"
+        to: "off"
+    condition:
+      - condition: or
+        conditions:
+          - condition: state
+            entity_id: binary_sensor.andreas_vindue
+            state: "on"
+          - condition: state
+            entity_id: binary_sensor.daniel_vindue
+            state: "on"
+          - condition: state
+            entity_id: binary_sensor.sovevaerelse_vindue
+            state: "on"
+          - condition: state
+            entity_id: binary_sensor.badevaerelse_vindue
+            state: "on"
+          - condition: state
+            entity_id: binary_sensor.lille_bad_vindue
+            state: "on"
+          - condition: state
+            entity_id: binary_sensor.terrassedor
+            state: "on"
+    action:
+      - variables:
+          aabne_vinduer: >-
+            {% set vinduer = [] %}
+            {% if is_state('binary_sensor.andreas_vindue', 'on') %}
+              {% set vinduer = vinduer + ["Andreas' værelse"] %}
+            {% endif %}
+            {% if is_state('binary_sensor.daniel_vindue', 'on') %}
+              {% set vinduer = vinduer + ["Daniels værelse"] %}
+            {% endif %}
+            {% if is_state('binary_sensor.sovevaerelse_vindue', 'on') %}
+              {% set vinduer = vinduer + ["Soveværelset"] %}
+            {% endif %}
+            {% if is_state('binary_sensor.badevaerelse_vindue', 'on') %}
+              {% set vinduer = vinduer + ["Badeværelset"] %}
+            {% endif %}
+            {% if is_state('binary_sensor.lille_bad_vindue', 'on') %}
+              {% set vinduer = vinduer + ["Lille badeværelse"] %}
+            {% endif %}
+            {% if is_state('binary_sensor.terrassedor', 'on') %}
+              {% set vinduer = vinduer + ["Terrassedøren"] %}
+            {% endif %}
+            {{ vinduer | join(', ') }}
+      - service: notify.mobile_app_claus_iphone_15pro
+        data:
+          title: "🏠 Åbne vinduer - alle er væk"
+          message: "Alle har forladt huset, men disse vinduer er åbne: {{ aabne_vinduer }}"
+          data:
+            push:
+              sound:
+                name: default
+                critical: 1
+                volume: 1.0
+
+### Ventilation: Luft ud ved høj CO2 eller luftfugtighed (kl 6-22)
+
+  - alias: "Ventilation - luft ud påmindelse"
+    id: ventilation_luft_ud_paamindelse
+    description: "Send notifikation om at lufte ud ved høj CO2 eller luftfugtighed"
+    trigger:
+      - platform: numeric_state
+        entity_id: sensor.sovevaerelse_stue_carbon_dioxide
+        above: 1000
+        id: andreas_co2
+      - platform: numeric_state
+        entity_id: sensor.sovevaerelse_daniel_carbon_dioxide
+        above: 1000
+        id: daniel_co2
+      - platform: numeric_state
+        entity_id: sensor.sovevaerelse_carbon_dioxide
+        above: 1000
+        id: sovevaerelse_co2
+      - platform: numeric_state
+        entity_id: sensor.sovevaerelse_stue_luftfugtighed
+        above: 70
+        id: andreas_fugt
+      - platform: numeric_state
+        entity_id: sensor.sovevaerelse_daniel_luftfugtighed
+        above: 70
+        id: daniel_fugt
+      - platform: numeric_state
+        entity_id: sensor.sovevaerelse_luftfugtighed
+        above: 70
+        id: sovevaerelse_fugt
+    condition:
+      - condition: time
+        after: "06:00:00"
+        before: "22:00:00"
+    action:
+      - variables:
+          rum_navne:
+            andreas_co2: "Andreas' værelse (CO₂)"
+            andreas_fugt: "Andreas' værelse (luftfugtighed)"
+            daniel_co2: "Daniels værelse (CO₂)"
+            daniel_fugt: "Daniels værelse (luftfugtighed)"
+            sovevaerelse_co2: "Soveværelset (CO₂)"
+            sovevaerelse_fugt: "Soveværelset (luftfugtighed)"
+          rum_navn: "{{ rum_navne[trigger.id] }}"
+      - service: notify.mobile_app_claus_iphone_15pro
+        data:
+          title: "🌬️ Luft ud"
+          message: "{{ rum_navn }} har for høj værdi. Åbn vinduet for at lufte ud."
+
+  - alias: "Ventilation - luk vindue efter 15 min"
+    id: ventilation_luk_vindue_efter_15_min
+    description: "Påmind om at lukke vinduet 15 minutter efter det blev åbnet for udluftning"
+    mode: parallel
+    max: 3
+    trigger:
+      - platform: state
+        entity_id:
+          - binary_sensor.andreas_vindue
+          - binary_sensor.daniel_vindue
+          - binary_sensor.sovevaerelse_vindue
+        to: "on"
+    condition:
+      - condition: time
+        after: "06:00:00"
+        before: "22:00:00"
+      - condition: or
+        conditions:
+          - condition: template
+            value_template: >-
+              {{ trigger.entity_id == 'binary_sensor.andreas_vindue' and
+                 (states('sensor.sovevaerelse_stue_carbon_dioxide') | float(0) > 1000 or
+                  states('sensor.sovevaerelse_stue_luftfugtighed') | float(0) > 70) }}
+          - condition: template
+            value_template: >-
+              {{ trigger.entity_id == 'binary_sensor.daniel_vindue' and
+                 (states('sensor.sovevaerelse_daniel_carbon_dioxide') | float(0) > 1000 or
+                  states('sensor.sovevaerelse_daniel_luftfugtighed') | float(0) > 70) }}
+          - condition: template
+            value_template: >-
+              {{ trigger.entity_id == 'binary_sensor.sovevaerelse_vindue' and
+                 (states('sensor.sovevaerelse_carbon_dioxide') | float(0) > 1000 or
+                  states('sensor.sovevaerelse_luftfugtighed') | float(0) > 70) }}
+    action:
+      - variables:
+          vindue_navne:
+            binary_sensor.andreas_vindue: "Andreas' værelse"
+            binary_sensor.daniel_vindue: "Daniels værelse"
+            binary_sensor.sovevaerelse_vindue: "Soveværelset"
+          vindue_navn: "{{ vindue_navne[trigger.entity_id] }}"
+      - delay: "00:15:00"
+      - condition: state
+        entity_id: "{{ trigger.entity_id }}"
+        state: "on"
+      - service: notify.mobile_app_claus_iphone_15pro
+        data:
+          title: "🪟 Luk vinduet"
+          message: "Vinduet i {{ vindue_navn }} har været åbent i 15 minutter. Husk at lukke det igen."
diff --git a/include/templates/maintenance.yaml b/include/templates/maintenance.yaml
index e91b439..fec321a 100644
--- a/include/templates/maintenance.yaml
+++ b/include/templates/maintenance.yaml
@@ -75,8 +75,12 @@
             states('sensor.terrasse_dor_battery') | float(100),
             states('sensor.venstre_battery') | float(100),
             states('sensor.syd_batteri') | float(100),
-            states('sensor.hojre_battery') | float(100)
-          ] | min < 20
+            states('sensor.hojre_battery') | float(100)            states('sensor.sovevaerelse_vindue_batteri') | float(100),
+            states('sensor.daniel_vindue_batteri') | float(100),
+            states('sensor.andreas_vindue_batteri') | float(100),
+            states('sensor.badevaerelse_vindue_batteri') | float(100),
+            states('sensor.lille_bad_vindue_batteri') | float(100),
+            states('sensor.terrassedor_batteri') | float(100),          ] | min < 20
         }}
 
     - name: Vedligehold Home Assistant
@@ -217,6 +221,12 @@
             1 if states('sensor.syd_batteri') | float(100) < 20 else 0,
             1 if states('sensor.hojre_battery') | float(100) < 20 else 0,
             1 if states('sensor.garageport_batteri') | float(100) < 20 else 0,
+            1 if states('sensor.sovevaerelse_vindue_batteri') | float(100) < 20 else 0,
+            1 if states('sensor.daniel_vindue_batteri') | float(100) < 20 else 0,
+            1 if states('sensor.andreas_vindue_batteri') | float(100) < 20 else 0,
+            1 if states('sensor.badevaerelse_vindue_batteri') | float(100) < 20 else 0,
+            1 if states('sensor.lille_bad_vindue_batteri') | float(100) < 20 else 0,
+            1 if states('sensor.terrassedor_batteri') | float(100) < 20 else 0,
             1 if is_state('lawn_mower.husqvarna_automower', 'error') else 0
           ] | sum
         }}
\ No newline at end of file