diff --git a/homeassistant/components/sonarr/__init__.py b/homeassistant/components/sonarr/__init__.py
index 730ba857c49..08fc2c7f26d 100644
--- a/homeassistant/components/sonarr/__init__.py
+++ b/homeassistant/components/sonarr/__init__.py
@@ -8,7 +8,6 @@ from sonarr import Sonarr, SonarrAccessRestricted, SonarrError
 
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
-    ATTR_NAME,
     CONF_API_KEY,
     CONF_HOST,
     CONF_PORT,
@@ -18,12 +17,8 @@ from homeassistant.const import (
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryAuthFailed, ConfigEntryNotReady
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
-from homeassistant.helpers.entity import DeviceInfo, Entity
 
 from .const import (
-    ATTR_IDENTIFIERS,
-    ATTR_MANUFACTURER,
-    ATTR_SOFTWARE_VERSION,
     CONF_BASE_PATH,
     CONF_UPCOMING_DAYS,
     CONF_WANTED_MAX_ITEMS,
@@ -99,54 +94,3 @@ async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
 async def _async_update_listener(hass: HomeAssistant, entry: ConfigEntry) -> None:
     """Handle options update."""
     await hass.config_entries.async_reload(entry.entry_id)
-
-
-class SonarrEntity(Entity):
-    """Defines a base Sonarr entity."""
-
-    def __init__(
-        self,
-        *,
-        sonarr: Sonarr,
-        entry_id: str,
-        device_id: str,
-        name: str,
-        icon: str,
-        enabled_default: bool = True,
-    ) -> None:
-        """Initialize the Sonarr entity."""
-        self._entry_id = entry_id
-        self._device_id = device_id
-        self._enabled_default = enabled_default
-        self._icon = icon
-        self._name = name
-        self.sonarr = sonarr
-
-    @property
-    def name(self) -> str:
-        """Return the name of the entity."""
-        return self._name
-
-    @property
-    def icon(self) -> str:
-        """Return the mdi icon of the entity."""
-        return self._icon
-
-    @property
-    def entity_registry_enabled_default(self) -> bool:
-        """Return if the entity should be enabled when first added to the entity registry."""
-        return self._enabled_default
-
-    @property
-    def device_info(self) -> DeviceInfo | None:
-        """Return device information about the application."""
-        if self._device_id is None:
-            return None
-
-        return {
-            ATTR_IDENTIFIERS: {(DOMAIN, self._device_id)},
-            ATTR_NAME: "Activity Sensor",
-            ATTR_MANUFACTURER: "Sonarr",
-            ATTR_SOFTWARE_VERSION: self.sonarr.app.info.version,
-            "entry_type": "service",
-        }
diff --git a/homeassistant/components/sonarr/entity.py b/homeassistant/components/sonarr/entity.py
new file mode 100644
index 00000000000..3fc74b1ddb5
--- /dev/null
+++ b/homeassistant/components/sonarr/entity.py
@@ -0,0 +1,39 @@
+"""Base Entity for Sonarr."""
+from __future__ import annotations
+
+from sonarr import Sonarr
+
+from homeassistant.const import ATTR_NAME
+from homeassistant.helpers.entity import DeviceInfo, Entity
+
+from .const import ATTR_IDENTIFIERS, ATTR_MANUFACTURER, ATTR_SOFTWARE_VERSION, DOMAIN
+
+
+class SonarrEntity(Entity):
+    """Defines a base Sonarr entity."""
+
+    def __init__(
+        self,
+        *,
+        sonarr: Sonarr,
+        entry_id: str,
+        device_id: str,
+    ) -> None:
+        """Initialize the Sonarr entity."""
+        self._entry_id = entry_id
+        self._device_id = device_id
+        self.sonarr = sonarr
+
+    @property
+    def device_info(self) -> DeviceInfo | None:
+        """Return device information about the application."""
+        if self._device_id is None:
+            return None
+
+        return {
+            ATTR_IDENTIFIERS: {(DOMAIN, self._device_id)},
+            ATTR_NAME: "Activity Sensor",
+            ATTR_MANUFACTURER: "Sonarr",
+            ATTR_SOFTWARE_VERSION: self.sonarr.app.info.version,
+            "entry_type": "service",
+        }
diff --git a/homeassistant/components/sonarr/sensor.py b/homeassistant/components/sonarr/sensor.py
index 392c026f49b..f1413aca52f 100644
--- a/homeassistant/components/sonarr/sensor.py
+++ b/homeassistant/components/sonarr/sensor.py
@@ -14,8 +14,8 @@ from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 import homeassistant.util.dt as dt_util
 
-from . import SonarrEntity
 from .const import CONF_UPCOMING_DAYS, CONF_WANTED_MAX_ITEMS, DATA_SONARR, DOMAIN
+from .entity import SonarrEntity
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -81,35 +81,25 @@ class SonarrSensor(SonarrEntity, SensorEntity):
         unit_of_measurement: str | None = None,
     ) -> None:
         """Initialize Sonarr sensor."""
-        self._unit_of_measurement = unit_of_measurement
         self._key = key
-        self._unique_id = f"{entry_id}_{key}"
+        self._attr_name = name
+        self._attr_icon = icon
+        self._attr_unique_id = f"{entry_id}_{key}"
+        self._attr_unit_of_measurement = unit_of_measurement
+        self._attr_entity_registry_enabled_default = enabled_default
         self.last_update_success = False
 
         super().__init__(
             sonarr=sonarr,
             entry_id=entry_id,
             device_id=entry_id,
-            name=name,
-            icon=icon,
-            enabled_default=enabled_default,
         )
 
-    @property
-    def unique_id(self) -> str:
-        """Return the unique ID for this sensor."""
-        return self._unique_id
-
     @property
     def available(self) -> bool:
         """Return sensor availability."""
         return self.last_update_success
 
-    @property
-    def unit_of_measurement(self) -> str:
-        """Return the unit this state is expressed in."""
-        return self._unit_of_measurement
-
 
 class SonarrCommandsSensor(SonarrSensor):
     """Defines a Sonarr Commands sensor."""
@@ -186,7 +176,7 @@ class SonarrDiskspaceSensor(SonarrSensor):
 
             attrs[
                 disk.path
-            ] = f"{free:.2f}/{total:.2f}{self._unit_of_measurement} ({usage:.2f}%)"
+            ] = f"{free:.2f}/{total:.2f}{self.unit_of_measurement} ({usage:.2f}%)"
 
         return attrs