diff --git a/homeassistant/components/venstar/sensor.py b/homeassistant/components/venstar/sensor.py
index 24b4b2f8b16..b4913a874d0 100644
--- a/homeassistant/components/venstar/sensor.py
+++ b/homeassistant/components/venstar/sensor.py
@@ -65,13 +65,15 @@ SCHEDULE_PARTS: dict[int, str] = {
     255: "inactive",
 }
 
+STAGES: dict[int, str] = {0: "idle", 1: "first_stage", 2: "second_stage"}
+
 
 @dataclass(frozen=True, kw_only=True)
 class VenstarSensorEntityDescription(SensorEntityDescription):
     """Base description of a Sensor entity."""
 
     value_fn: Callable[[VenstarDataUpdateCoordinator, str], Any]
-    name_fn: Callable[[str], str]
+    name_fn: Callable[[str], str] | None
     uom_fn: Callable[[Any], str | None]
 
 
@@ -140,7 +142,8 @@ class VenstarSensor(VenstarEntity, SensorEntity):
         super().__init__(coordinator, config)
         self.entity_description = entity_description
         self.sensor_name = sensor_name
-        self._attr_name = entity_description.name_fn(sensor_name)
+        if entity_description.name_fn:
+            self._attr_name = entity_description.name_fn(sensor_name)
         self._config = config
 
     @property
@@ -230,6 +233,17 @@ INFO_ENTITIES: tuple[VenstarSensorEntityDescription, ...] = (
         value_fn=lambda coordinator, sensor_name: SCHEDULE_PARTS[
             coordinator.client.get_info(sensor_name)
         ],
-        name_fn=lambda _: "Schedule Part",
+        name_fn=None,
+    ),
+    VenstarSensorEntityDescription(
+        key="activestage",
+        device_class=SensorDeviceClass.ENUM,
+        options=list(STAGES.values()),
+        translation_key="active_stage",
+        uom_fn=lambda _: None,
+        value_fn=lambda coordinator, sensor_name: STAGES[
+            coordinator.client.get_info(sensor_name)
+        ],
+        name_fn=None,
     ),
 )
diff --git a/homeassistant/components/venstar/strings.json b/homeassistant/components/venstar/strings.json
index 92dfac211fb..952353dcbfe 100644
--- a/homeassistant/components/venstar/strings.json
+++ b/homeassistant/components/venstar/strings.json
@@ -26,6 +26,7 @@
   "entity": {
     "sensor": {
       "schedule_part": {
+        "name": "Schedule Part",
         "state": {
           "morning": "Morning",
           "day": "Day",
@@ -33,6 +34,14 @@
           "night": "Night",
           "inactive": "Inactive"
         }
+      },
+      "active_stage": {
+        "name": "Active stage",
+        "state": {
+          "idle": "Idle",
+          "first_stage": "First stage",
+          "second_stage": "Second stage"
+        }
       }
     }
   }