diff --git a/homeassistant/components/idasen_desk/cover.py b/homeassistant/components/idasen_desk/cover.py
index f5591eff0d8..eb6bf5523de 100644
--- a/homeassistant/components/idasen_desk/cover.py
+++ b/homeassistant/components/idasen_desk/cover.py
@@ -66,7 +66,7 @@ class IdasenDeskCover(CoordinatorEntity[IdasenDeskCoordinator], CoverEntity):
     @property
     def available(self) -> bool:
         """Return True if entity is available."""
-        return self._desk.is_connected is True
+        return super().available and self._desk.is_connected is True
 
     @property
     def is_closed(self) -> bool:
diff --git a/homeassistant/components/idasen_desk/sensor.py b/homeassistant/components/idasen_desk/sensor.py
index 12a3b2ed4d9..8ed85d21a34 100644
--- a/homeassistant/components/idasen_desk/sensor.py
+++ b/homeassistant/components/idasen_desk/sensor.py
@@ -79,12 +79,18 @@ class IdasenDeskSensor(CoordinatorEntity[IdasenDeskCoordinator], SensorEntity):
         self._attr_unique_id = f"{description.key}-{address}"
         self._attr_device_info = device_info
         self._address = address
+        self._desk = coordinator.desk
 
     async def async_added_to_hass(self) -> None:
         """When entity is added to hass."""
         await super().async_added_to_hass()
         self._update_native_value()
 
+    @property
+    def available(self) -> bool:
+        """Return True if entity is available."""
+        return super().available and self._desk.is_connected is True
+
     @callback
     def _handle_coordinator_update(self, *args: Any) -> None:
         """Handle data update."""
diff --git a/tests/components/idasen_desk/test_sensors.py b/tests/components/idasen_desk/test_sensors.py
index a236555a506..614bce523e6 100644
--- a/tests/components/idasen_desk/test_sensors.py
+++ b/tests/components/idasen_desk/test_sensors.py
@@ -4,10 +4,13 @@ from unittest.mock import MagicMock
 
 import pytest
 
+from homeassistant.const import STATE_UNAVAILABLE
 from homeassistant.core import HomeAssistant
 
 from . import init_integration
 
+EXPECTED_INITIAL_HEIGHT = "1"
+
 
 @pytest.mark.usefixtures("entity_registry_enabled_by_default")
 async def test_height_sensor(hass: HomeAssistant, mock_desk_api: MagicMock) -> None:
@@ -17,7 +20,7 @@ async def test_height_sensor(hass: HomeAssistant, mock_desk_api: MagicMock) -> N
     entity_id = "sensor.test_height"
     state = hass.states.get(entity_id)
     assert state
-    assert state.state == "1"
+    assert state.state == EXPECTED_INITIAL_HEIGHT
 
     mock_desk_api.height = 1.2
     mock_desk_api.trigger_update_callback(None)
@@ -25,3 +28,24 @@ async def test_height_sensor(hass: HomeAssistant, mock_desk_api: MagicMock) -> N
     state = hass.states.get(entity_id)
     assert state
     assert state.state == "1.2"
+
+
+@pytest.mark.usefixtures("entity_registry_enabled_by_default")
+async def test_sensor_available(
+    hass: HomeAssistant,
+    mock_desk_api: MagicMock,
+) -> None:
+    """Test sensor available property."""
+    await init_integration(hass)
+
+    entity_id = "sensor.test_height"
+    state = hass.states.get(entity_id)
+    assert state
+    assert state.state == EXPECTED_INITIAL_HEIGHT
+
+    mock_desk_api.is_connected = False
+    mock_desk_api.trigger_update_callback(None)
+
+    state = hass.states.get(entity_id)
+    assert state
+    assert state.state == STATE_UNAVAILABLE