diff --git a/homeassistant/components/ecoforest/number.py b/homeassistant/components/ecoforest/number.py
index 79d62b6a2d2..046e780dc2b 100644
--- a/homeassistant/components/ecoforest/number.py
+++ b/homeassistant/components/ecoforest/number.py
@@ -16,20 +16,13 @@ from .coordinator import EcoforestCoordinator
 from .entity import EcoforestEntity
 
 
-@dataclass(frozen=True)
-class EcoforestRequiredKeysMixin:
-    """Mixin for required keys."""
+@dataclass(frozen=True, kw_only=True)
+class EcoforestNumberEntityDescription(NumberEntityDescription):
+    """Describes an ecoforest number entity."""
 
     value_fn: Callable[[Device], float | None]
 
 
-@dataclass(frozen=True)
-class EcoforestNumberEntityDescription(
-    NumberEntityDescription, EcoforestRequiredKeysMixin
-):
-    """Describes an ecoforest number entity."""
-
-
 NUMBER_ENTITIES = (
     EcoforestNumberEntityDescription(
         key="power_level",
diff --git a/homeassistant/components/ecoforest/sensor.py b/homeassistant/components/ecoforest/sensor.py
index 90904d274ac..2b698602cff 100644
--- a/homeassistant/components/ecoforest/sensor.py
+++ b/homeassistant/components/ecoforest/sensor.py
@@ -33,20 +33,13 @@ STATUS_TYPE = [s.value for s in State]
 ALARM_TYPE = [a.value for a in Alarm] + ["none"]
 
 
-@dataclass(frozen=True)
-class EcoforestRequiredKeysMixin:
-    """Mixin for required keys."""
+@dataclass(frozen=True, kw_only=True)
+class EcoforestSensorEntityDescription(SensorEntityDescription):
+    """Describes Ecoforest sensor entity."""
 
     value_fn: Callable[[Device], StateType]
 
 
-@dataclass(frozen=True)
-class EcoforestSensorEntityDescription(
-    SensorEntityDescription, EcoforestRequiredKeysMixin
-):
-    """Describes Ecoforest sensor entity."""
-
-
 SENSOR_TYPES: tuple[EcoforestSensorEntityDescription, ...] = (
     EcoforestSensorEntityDescription(
         key="temperature",
diff --git a/homeassistant/components/ecoforest/switch.py b/homeassistant/components/ecoforest/switch.py
index 1e70068cde8..378c27924ae 100644
--- a/homeassistant/components/ecoforest/switch.py
+++ b/homeassistant/components/ecoforest/switch.py
@@ -17,21 +17,14 @@ from .coordinator import EcoforestCoordinator
 from .entity import EcoforestEntity
 
 
-@dataclass(frozen=True)
-class EcoforestSwitchRequiredKeysMixin:
-    """Mixin for required keys."""
+@dataclass(frozen=True, kw_only=True)
+class EcoforestSwitchEntityDescription(SwitchEntityDescription):
+    """Describes an Ecoforest switch entity."""
 
     value_fn: Callable[[Device], bool]
     switch_fn: Callable[[EcoforestApi, bool], Awaitable[Device]]
 
 
-@dataclass(frozen=True)
-class EcoforestSwitchEntityDescription(
-    SwitchEntityDescription, EcoforestSwitchRequiredKeysMixin
-):
-    """Describes an Ecoforest switch entity."""
-
-
 SWITCH_TYPES: tuple[EcoforestSwitchEntityDescription, ...] = (
     EcoforestSwitchEntityDescription(
         key="status",