diff --git a/custom_components/versatile_thermostat/central_feature_power_manager.py b/custom_components/versatile_thermostat/central_feature_power_manager.py
index 41b7b4c..a95ee52 100644
--- a/custom_components/versatile_thermostat/central_feature_power_manager.py
+++ b/custom_components/versatile_thermostat/central_feature_power_manager.py
@@ -86,7 +86,7 @@ class CentralFeaturePowerManager(BaseFeatureManager):
             async_track_state_change_event(
                 self.hass,
                 [self._power_sensor_entity_id],
-                self._async_power_sensor_changed,
+                self._power_sensor_changed,
             )
         )
 
@@ -94,12 +94,12 @@ class CentralFeaturePowerManager(BaseFeatureManager):
             async_track_state_change_event(
                 self.hass,
                 [self._max_power_sensor_entity_id],
-                self._async_max_power_sensor_changed,
+                self._max_power_sensor_changed,
             )
         )
 
     @callback
-    async def _async_power_sensor_changed(self, event: Event[EventStateChangedData]):
+    async def _power_sensor_changed(self, event: Event[EventStateChangedData]):
         """Handle power changes."""
         _LOGGER.debug("Thermostat %s - Receive new Power event", self)
         _LOGGER.debug(event)
@@ -125,9 +125,7 @@ class CentralFeaturePowerManager(BaseFeatureManager):
             _LOGGER.error("Unable to update current_power from sensor: %s", ex)
 
     @callback
-    async def _async_max_power_sensor_changed(
-        self, event: Event[EventStateChangedData]
-    ):
+    async def _max_power_sensor_changed(self, event: Event[EventStateChangedData]):
         """Handle power max changes."""
         _LOGGER.debug("Thermostat %s - Receive new Power Max event", self.name)
         _LOGGER.debug(event)
diff --git a/tests/test_central_power_manager.py b/tests/test_central_power_manager.py
index 86f4c70..4935369 100644
--- a/tests/test_central_power_manager.py
+++ b/tests/test_central_power_manager.py
@@ -429,3 +429,35 @@ async def test_central_power_manageer_calculate_shedding(
 
         # Check registered calls
         assert registered_calls == expected_results
+
+
+async def test_central_power_manager_power_event(hass: HomeAssistant):
+    """Tests the Power sensor event"""
+    vtherm_api: VersatileThermostatAPI = MagicMock(spec=VersatileThermostatAPI)
+    central_power_manager = CentralFeaturePowerManager(hass, vtherm_api)
+
+    assert central_power_manager.current_power is None
+    assert central_power_manager.power_temperature is None
+    assert central_power_manager.name == "centralPowerManager"
+
+    # 2. post_init
+    central_power_manager.post_init(
+        {
+            CONF_POWER_SENSOR: power_entity_id,
+            CONF_MAX_POWER_SENSOR: max_power_entity_id,
+            CONF_USE_POWER_FEATURE: use_power_feature,
+            CONF_PRESET_POWER: 13,
+        }
+    )
+
+    assert central_power_manager.is_configured == True
+    assert central_power_manager.current_max_power is None
+    assert central_power_manager.current_power is None
+    assert central_power_manager.power_temperature == 13
+
+    # 3. start listening
+    central_power_manager.start_listening()
+    assert len(central_power_manager._active_listener) == 2
+
+    tz = get_tz(hass)  # pylint: disable=invalid-name
+    now: datetime = datetime.now(tz=tz)