diff --git a/homeassistant/components/incomfort/sensor.py b/homeassistant/components/incomfort/sensor.py
index 044443c8ac0..3ee42dbd78f 100644
--- a/homeassistant/components/incomfort/sensor.py
+++ b/homeassistant/components/incomfort/sensor.py
@@ -16,7 +16,7 @@ from homeassistant.const import UnitOfPressure, UnitOfTemperature
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.device_registry import DeviceInfo
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
-from homeassistant.util import slugify
+from homeassistant.helpers.typing import StateType
 
 from . import InComfortConfigEntry
 from .const import DOMAIN
@@ -28,10 +28,11 @@ INCOMFORT_PRESSURE = "CV Pressure"
 INCOMFORT_TAP_TEMP = "Tap Temp"
 
 
-@dataclass(frozen=True)
+@dataclass(frozen=True, kw_only=True)
 class IncomfortSensorEntityDescription(SensorEntityDescription):
     """Describes Incomfort sensor entity."""
 
+    value_key: str
     extra_key: str | None = None
     # IncomfortSensor does not support UNDEFINED or None,
     # restrict the type to str
@@ -40,17 +41,19 @@ class IncomfortSensorEntityDescription(SensorEntityDescription):
 
 SENSOR_TYPES: tuple[IncomfortSensorEntityDescription, ...] = (
     IncomfortSensorEntityDescription(
-        key="pressure",
+        key="cv_pressure",
         name=INCOMFORT_PRESSURE,
         device_class=SensorDeviceClass.PRESSURE,
         native_unit_of_measurement=UnitOfPressure.BAR,
+        value_key="pressure",
     ),
     IncomfortSensorEntityDescription(
-        key="heater_temp",
+        key="cv_temp",
         name=INCOMFORT_HEATER_TEMP,
         device_class=SensorDeviceClass.TEMPERATURE,
         native_unit_of_measurement=UnitOfTemperature.CELSIUS,
         extra_key="is_pumping",
+        value_key="heater_temp",
     ),
     IncomfortSensorEntityDescription(
         key="tap_temp",
@@ -58,6 +61,7 @@ SENSOR_TYPES: tuple[IncomfortSensorEntityDescription, ...] = (
         device_class=SensorDeviceClass.TEMPERATURE,
         native_unit_of_measurement=UnitOfTemperature.CELSIUS,
         extra_key="is_tapping",
+        value_key="tap_temp",
     ),
 )
 
@@ -94,7 +98,7 @@ class IncomfortSensor(IncomfortEntity, SensorEntity):
 
         self._heater = heater
 
-        self._attr_unique_id = f"{heater.serial_no}_{slugify(description.name)}"
+        self._attr_unique_id = f"{heater.serial_no}_{description.key}"
         self._attr_device_info = DeviceInfo(
             identifiers={(DOMAIN, heater.serial_no)},
             manufacturer="Intergas",
@@ -102,9 +106,9 @@ class IncomfortSensor(IncomfortEntity, SensorEntity):
         )
 
     @property
-    def native_value(self) -> str | None:
+    def native_value(self) -> StateType:
         """Return the state of the sensor."""
-        return self._heater.status[self.entity_description.key]
+        return self._heater.status[self.entity_description.value_key]
 
     @property
     def extra_state_attributes(self) -> dict[str, Any] | None: