diff --git a/apps/global/heating.yaml b/apps/global/heating.yaml
index cb5edaa..6ac84d5 100644
--- a/apps/global/heating.yaml
+++ b/apps/global/heating.yaml
@@ -137,6 +137,7 @@ living_room_heatpump:
   virtual_sensors:
     sensors:
       binary_sensor.living_room_any_window_open: binary_sensor.living_room_french_door or binary_sensor.living_room_window
+      binary_sensor.living_room_cant_open_window: binary_sensor.is_living_room_sleeping or binary_sensor.projector_on
 
   constants:
     window_open: binary_sensor.living_room_any_window_open
@@ -144,7 +145,7 @@ living_room_heatpump:
     room_temperature: sensor.living_room_temperature
     room_occupancy: binary_sensor.living_room_occupancy
     target_temperature: sensor.target_temperature_heatpump
-    cant_open_window: binary_sensor.is_living_room_sleeping
+    cant_open_window: binary_sensor.living_room_cant_open_window
     sleeping_in_the_room: binary_sensor.is_living_room_sleeping
     quick_resume: binary_sensor.living_room_heatpump_quick_resume
     stay_on_while_sleeping: false