diff --git a/homeassistant/components/lidarr/const.py b/homeassistant/components/lidarr/const.py
index 08e284b9b31..feadedb6d49 100644
--- a/homeassistant/components/lidarr/const.py
+++ b/homeassistant/components/lidarr/const.py
@@ -2,35 +2,25 @@
 import logging
 from typing import Final
 
-from homeassistant.const import (
-    DATA_BYTES,
-    DATA_EXABYTES,
-    DATA_GIGABYTES,
-    DATA_KILOBYTES,
-    DATA_MEGABYTES,
-    DATA_PETABYTES,
-    DATA_TERABYTES,
-    DATA_YOTTABYTES,
-    DATA_ZETTABYTES,
-)
+from homeassistant.const import UnitOfInformation
 
 BYTE_SIZES = [
-    DATA_BYTES,
-    DATA_KILOBYTES,
-    DATA_MEGABYTES,
-    DATA_GIGABYTES,
-    DATA_TERABYTES,
-    DATA_PETABYTES,
-    DATA_EXABYTES,
-    DATA_ZETTABYTES,
-    DATA_YOTTABYTES,
+    UnitOfInformation.BYTES,
+    UnitOfInformation.KILOBYTES,
+    UnitOfInformation.MEGABYTES,
+    UnitOfInformation.GIGABYTES,
+    UnitOfInformation.TERABYTES,
+    UnitOfInformation.PETABYTES,
+    UnitOfInformation.EXABYTES,
+    UnitOfInformation.ZETTABYTES,
+    UnitOfInformation.YOTTABYTES,
 ]
 
 # Defaults
 DEFAULT_DAYS = "1"
 DEFAULT_HOST = "localhost"
 DEFAULT_NAME = "Lidarr"
-DEFAULT_UNIT = DATA_GIGABYTES
+DEFAULT_UNIT = UnitOfInformation.GIGABYTES
 DEFAULT_MAX_RECORDS = 20
 
 DOMAIN: Final = "lidarr"
diff --git a/homeassistant/components/lidarr/sensor.py b/homeassistant/components/lidarr/sensor.py
index 2e5f9bb710f..96ab2e5f7a2 100644
--- a/homeassistant/components/lidarr/sensor.py
+++ b/homeassistant/components/lidarr/sensor.py
@@ -9,12 +9,13 @@ from typing import Any, Generic
 from aiopyarr import LidarrQueue, LidarrQueueItem, LidarrRootFolder
 
 from homeassistant.components.sensor import (
+    SensorDeviceClass,
     SensorEntity,
     SensorEntityDescription,
     SensorStateClass,
 )
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import DATA_GIGABYTES
+from homeassistant.const import UnitOfInformation
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
@@ -29,7 +30,9 @@ def get_space(data: list[LidarrRootFolder], name: str) -> str:
     for mount in data:
         if name in mount.path:
             mount.freeSpace = mount.freeSpace if mount.accessible else 0
-            space.append(mount.freeSpace / 1024 ** BYTE_SIZES.index(DATA_GIGABYTES))
+            space.append(
+                mount.freeSpace / 1024 ** BYTE_SIZES.index(UnitOfInformation.GIGABYTES)
+            )
     return f"{space[0]:.2f}"
 
 
@@ -68,7 +71,8 @@ SENSOR_TYPES: dict[str, LidarrSensorEntityDescription[Any]] = {
     "disk_space": LidarrSensorEntityDescription(
         key="disk_space",
         name="Disk space",
-        native_unit_of_measurement=DATA_GIGABYTES,
+        native_unit_of_measurement=UnitOfInformation.GIGABYTES,
+        device_class=SensorDeviceClass.DATA_SIZE,
         icon="mdi:harddisk",
         value_fn=get_space,
         state_class=SensorStateClass.TOTAL,