diff --git a/homeassistant/components/toon/const.py b/homeassistant/components/toon/const.py
index f017d0ae756..d7f403f7013 100644
--- a/homeassistant/components/toon/const.py
+++ b/homeassistant/components/toon/const.py
@@ -5,7 +5,7 @@ from homeassistant.components.binary_sensor import (
     DEVICE_CLASS_CONNECTIVITY,
     DEVICE_CLASS_PROBLEM,
 )
-from homeassistant.components.sensor import DEVICE_CLASS_POWER
+from homeassistant.components.sensor import DEVICE_CLASS_POWER, DEVICE_CLASS_TEMPERATURE
 from homeassistant.const import (
     ATTR_DEVICE_CLASS,
     ATTR_ICON,
@@ -13,6 +13,7 @@ from homeassistant.const import (
     ATTR_UNIT_OF_MEASUREMENT,
     ENERGY_KILO_WATT_HOUR,
     POWER_WATT,
+    TEMP_CELSIUS,
     UNIT_PERCENTAGE,
 )
 
@@ -112,6 +113,15 @@ BINARY_SENSOR_ENTITIES = {
 }
 
 SENSOR_ENTITIES = {
+    "current_display_temperature": {
+        ATTR_NAME: "Temperature",
+        ATTR_SECTION: "thermostat",
+        ATTR_MEASUREMENT: "current_display_temperature",
+        ATTR_UNIT_OF_MEASUREMENT: TEMP_CELSIUS,
+        ATTR_DEVICE_CLASS: DEVICE_CLASS_TEMPERATURE,
+        ATTR_ICON: None,
+        ATTR_DEFAULT_ENABLED: False,
+    },
     "gas_average": {
         ATTR_NAME: "Average Gas Usage",
         ATTR_SECTION: "gas_usage",
diff --git a/homeassistant/components/toon/sensor.py b/homeassistant/components/toon/sensor.py
index cbe5a4a570b..3a4d04718e9 100644
--- a/homeassistant/components/toon/sensor.py
+++ b/homeassistant/components/toon/sensor.py
@@ -19,6 +19,7 @@ from .const import (
 from .coordinator import ToonDataUpdateCoordinator
 from .models import (
     ToonBoilerDeviceEntity,
+    ToonDisplayDeviceEntity,
     ToonElectricityMeterDeviceEntity,
     ToonEntity,
     ToonGasMeterDeviceEntity,
@@ -49,6 +50,10 @@ async def async_setup_entry(
         )
     ]
 
+    sensors.extend(
+        [ToonDisplayDeviceSensor(coordinator, key="current_display_temperature")]
+    )
+
     if coordinator.data.gas_usage and coordinator.data.gas_usage.is_smart:
         sensors.extend(
             [
@@ -147,3 +152,7 @@ class ToonSolarDeviceSensor(ToonSensor, ToonSolarDeviceEntity):
 
 class ToonBoilerDeviceSensor(ToonSensor, ToonBoilerDeviceEntity):
     """Defines a Boiler sensor."""
+
+
+class ToonDisplayDeviceSensor(ToonSensor, ToonDisplayDeviceEntity):
+    """Defines a Display sensor."""