diff --git a/homeassistant/components/plugwise/binary_sensor.py b/homeassistant/components/plugwise/binary_sensor.py
index c022f209c0a..f6118dde370 100644
--- a/homeassistant/components/plugwise/binary_sensor.py
+++ b/homeassistant/components/plugwise/binary_sensor.py
@@ -12,7 +12,7 @@ from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.entity import EntityCategory
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
-from .const import DOMAIN, LOGGER, NO_NOTIFICATION_ICON, NOTIFICATION_ICON
+from .const import DOMAIN, LOGGER
 from .coordinator import PlugwiseDataUpdateCoordinator
 from .entity import PlugwiseEntity
 
@@ -41,6 +41,13 @@ BINARY_SENSORS: tuple[PlugwiseBinarySensorEntityDescription, ...] = (
         icon_off="mdi:circle-off-outline",
         entity_category=EntityCategory.DIAGNOSTIC,
     ),
+    PlugwiseBinarySensorEntityDescription(
+        key="plugwise_notification",
+        name="Plugwise Notification",
+        icon="mdi:mailbox-up-outline",
+        icon_off="mdi:mailbox-outline",
+        entity_category=EntityCategory.DIAGNOSTIC,
+    ),
 )
 
 
@@ -56,34 +63,20 @@ async def async_setup_entry(
 
     entities: list[PlugwiseBinarySensorEntity] = []
     for device_id, device in coordinator.data.devices.items():
-        if device["class"] == "heater_central":
-            for description in BINARY_SENSORS:
-                if (
-                    "binary_sensors" not in device
-                    or description.key not in device["binary_sensors"]
-                ):
-                    continue
+        for description in BINARY_SENSORS:
+            if (
+                "binary_sensors" not in device
+                or description.key not in device["binary_sensors"]
+            ):
+                continue
 
-                entities.append(
-                    PlugwiseBinarySensorEntity(
-                        coordinator,
-                        device_id,
-                        description,
-                    )
-                )
-
-        if device["class"] == "gateway":
             entities.append(
-                PlugwiseNotifyBinarySensorEntity(
+                PlugwiseBinarySensorEntity(
                     coordinator,
                     device_id,
-                    PlugwiseBinarySensorEntityDescription(
-                        key="plugwise_notification",
-                        name="Plugwise Notification",
-                    ),
+                    description,
                 )
             )
-
     async_add_entities(entities)
 
 
@@ -119,35 +112,18 @@ class PlugwiseBinarySensorEntity(PlugwiseEntity, BinarySensorEntity):
         if icon_off := self.entity_description.icon_off:
             self._attr_icon = self.entity_description.icon if state else icon_off
 
+        # Add entity attribute for Plugwise notifications
+        if self.entity_description.key == "plugwise_notification":
+            self._attr_extra_state_attributes = {
+                f"{severity}_msg": [] for severity in SEVERITIES
+            }
+
+            if notify := self.coordinator.data.gateway["notifications"]:
+                for details in notify.values():
+                    for msg_type, msg in details.items():
+                        msg_type = msg_type.lower()
+                        if msg_type not in SEVERITIES:
+                            msg_type = "other"
+                        self._attr_extra_state_attributes[f"{msg_type}_msg"].append(msg)
+
         super()._handle_coordinator_update()
-
-
-class PlugwiseNotifyBinarySensorEntity(PlugwiseBinarySensorEntity):
-    """Representation of a Plugwise Notification binary_sensor."""
-
-    @callback
-    def _handle_coordinator_update(self) -> None:
-        """Handle updated data from the coordinator."""
-        notify = self.coordinator.data.gateway["notifications"]
-
-        self._attr_extra_state_attributes = {}
-        for severity in SEVERITIES:
-            self._attr_extra_state_attributes[f"{severity}_msg"] = []
-
-        self._attr_is_on = False
-        self._attr_icon = NO_NOTIFICATION_ICON
-
-        if notify:
-            self._attr_is_on = True
-            self._attr_icon = NOTIFICATION_ICON
-
-            for details in notify.values():
-                for msg_type, msg in details.items():
-                    if msg_type not in SEVERITIES:
-                        msg_type = "other"
-
-                    self._attr_extra_state_attributes[f"{msg_type.lower()}_msg"].append(
-                        msg
-                    )
-
-        self.async_write_ha_state()
diff --git a/homeassistant/components/plugwise/const.py b/homeassistant/components/plugwise/const.py
index 62eabd8b0de..506f20c2768 100644
--- a/homeassistant/components/plugwise/const.py
+++ b/homeassistant/components/plugwise/const.py
@@ -62,5 +62,3 @@ FLAME_ICON = "mdi:fire"
 FLOW_OFF_ICON = "mdi:water-pump-off"
 FLOW_ON_ICON = "mdi:water-pump"
 IDLE_ICON = "mdi:circle-off-outline"
-NO_NOTIFICATION_ICON = "mdi:mailbox-outline"
-NOTIFICATION_ICON = "mdi:mailbox-up-outline"