diff --git a/homeassistant/components/baf/binary_sensor.py b/homeassistant/components/baf/binary_sensor.py
index 50e8cd78629..a4f501df5c1 100644
--- a/homeassistant/components/baf/binary_sensor.py
+++ b/homeassistant/components/baf/binary_sensor.py
@@ -21,20 +21,14 @@ from .entity import BAFEntity
 from .models import BAFData
 
 
-@dataclass(frozen=True)
-class BAFBinarySensorDescriptionMixin:
-    """Required values for BAF binary sensors."""
-
-    value_fn: Callable[[Device], bool | None]
-
-
-@dataclass(frozen=True)
+@dataclass(frozen=True, kw_only=True)
 class BAFBinarySensorDescription(
     BinarySensorEntityDescription,
-    BAFBinarySensorDescriptionMixin,
 ):
     """Class describing BAF binary sensor entities."""
 
+    value_fn: Callable[[Device], bool | None]
+
 
 OCCUPANCY_SENSORS = (
     BAFBinarySensorDescription(
diff --git a/homeassistant/components/baf/number.py b/homeassistant/components/baf/number.py
index 9dd4180c7e1..438dbbb689d 100644
--- a/homeassistant/components/baf/number.py
+++ b/homeassistant/components/baf/number.py
@@ -22,18 +22,13 @@ from .entity import BAFEntity
 from .models import BAFData
 
 
-@dataclass(frozen=True)
-class BAFNumberDescriptionMixin:
-    """Required values for BAF sensors."""
+@dataclass(frozen=True, kw_only=True)
+class BAFNumberDescription(NumberEntityDescription):
+    """Class describing BAF sensor entities."""
 
     value_fn: Callable[[Device], int | None]
 
 
-@dataclass(frozen=True)
-class BAFNumberDescription(NumberEntityDescription, BAFNumberDescriptionMixin):
-    """Class describing BAF sensor entities."""
-
-
 AUTO_COMFORT_NUMBER_DESCRIPTIONS = (
     BAFNumberDescription(
         key="comfort_min_speed",
diff --git a/homeassistant/components/baf/sensor.py b/homeassistant/components/baf/sensor.py
index 5c8d8f2979b..33cee901594 100644
--- a/homeassistant/components/baf/sensor.py
+++ b/homeassistant/components/baf/sensor.py
@@ -28,20 +28,14 @@ from .entity import BAFEntity
 from .models import BAFData
 
 
-@dataclass(frozen=True)
-class BAFSensorDescriptionMixin:
-    """Required values for BAF sensors."""
-
-    value_fn: Callable[[Device], int | float | str | None]
-
-
-@dataclass(frozen=True)
+@dataclass(frozen=True, kw_only=True)
 class BAFSensorDescription(
     SensorEntityDescription,
-    BAFSensorDescriptionMixin,
 ):
     """Class describing BAF sensor entities."""
 
+    value_fn: Callable[[Device], int | float | str | None]
+
 
 AUTO_COMFORT_SENSORS = (
     BAFSensorDescription(
diff --git a/homeassistant/components/baf/switch.py b/homeassistant/components/baf/switch.py
index ccb8aee36e5..406fcacadde 100644
--- a/homeassistant/components/baf/switch.py
+++ b/homeassistant/components/baf/switch.py
@@ -18,20 +18,14 @@ from .entity import BAFEntity
 from .models import BAFData
 
 
-@dataclass(frozen=True)
-class BAFSwitchDescriptionMixin:
-    """Required values for BAF sensors."""
-
-    value_fn: Callable[[Device], bool | None]
-
-
-@dataclass(frozen=True)
+@dataclass(frozen=True, kw_only=True)
 class BAFSwitchDescription(
     SwitchEntityDescription,
-    BAFSwitchDescriptionMixin,
 ):
     """Class describing BAF switch entities."""
 
+    value_fn: Callable[[Device], bool | None]
+
 
 BASE_SWITCHES = [
     BAFSwitchDescription(