diff --git a/homeassistant/components/bsblan/__init__.py b/homeassistant/components/bsblan/__init__.py
index 79447c6cff5..4d3c6ee2073 100644
--- a/homeassistant/components/bsblan/__init__.py
+++ b/homeassistant/components/bsblan/__init__.py
@@ -15,11 +15,13 @@ from homeassistant.const import (
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 
-from .const import CONF_PASSKEY, DOMAIN
+from .const import CONF_PASSKEY
 from .coordinator import BSBLanUpdateCoordinator
 
 PLATFORMS = [Platform.CLIMATE, Platform.SENSOR]
 
+type BSBLanConfigEntry = ConfigEntry[BSBLanData]
+
 
 @dataclasses.dataclass
 class BSBLanData:
@@ -32,7 +34,7 @@ class BSBLanData:
     static: StaticState
 
 
-async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+async def async_setup_entry(hass: HomeAssistant, entry: BSBLanConfigEntry) -> bool:
     """Set up BSB-Lan from a config entry."""
 
     # create config using BSBLANConfig
@@ -57,7 +59,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     info = await bsblan.info()
     static = await bsblan.static_values()
 
-    hass.data.setdefault(DOMAIN, {})[entry.entry_id] = BSBLanData(
+    entry.runtime_data = BSBLanData(
         client=bsblan,
         coordinator=coordinator,
         device=device,
@@ -70,11 +72,6 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     return True
 
 
-async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+async def async_unload_entry(hass: HomeAssistant, entry: BSBLanConfigEntry) -> bool:
     """Unload BSBLAN config entry."""
-    if unload_ok := await hass.config_entries.async_unload_platforms(entry, PLATFORMS):
-        # Cleanup
-        del hass.data[DOMAIN][entry.entry_id]
-        if not hass.data[DOMAIN]:
-            del hass.data[DOMAIN]
-    return unload_ok
+    return await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
diff --git a/homeassistant/components/bsblan/climate.py b/homeassistant/components/bsblan/climate.py
index 3a204a9e0c2..fcbe88f2fac 100644
--- a/homeassistant/components/bsblan/climate.py
+++ b/homeassistant/components/bsblan/climate.py
@@ -15,7 +15,6 @@ from homeassistant.components.climate import (
     ClimateEntityFeature,
     HVACMode,
 )
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import ATTR_TEMPERATURE, UnitOfTemperature
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import HomeAssistantError, ServiceValidationError
@@ -23,7 +22,7 @@ from homeassistant.helpers.device_registry import format_mac
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.util.enum import try_parse_enum
 
-from . import BSBLanData
+from . import BSBLanConfigEntry, BSBLanData
 from .const import ATTR_TARGET_TEMPERATURE, DOMAIN
 from .entity import BSBLanEntity
 
@@ -43,18 +42,12 @@ PRESET_MODES = [
 
 async def async_setup_entry(
     hass: HomeAssistant,
-    entry: ConfigEntry,
+    entry: BSBLanConfigEntry,
     async_add_entities: AddEntitiesCallback,
 ) -> None:
     """Set up BSBLAN device based on a config entry."""
-    data: BSBLanData = hass.data[DOMAIN][entry.entry_id]
-    async_add_entities(
-        [
-            BSBLANClimate(
-                data,
-            )
-        ]
-    )
+    data = entry.runtime_data
+    async_add_entities([BSBLANClimate(data)])
 
 
 class BSBLANClimate(BSBLanEntity, ClimateEntity):
diff --git a/homeassistant/components/bsblan/diagnostics.py b/homeassistant/components/bsblan/diagnostics.py
index 88418f306c8..5a8e5c1c4c5 100644
--- a/homeassistant/components/bsblan/diagnostics.py
+++ b/homeassistant/components/bsblan/diagnostics.py
@@ -4,18 +4,16 @@ from __future__ import annotations
 
 from typing import Any
 
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
 
-from . import BSBLanData
-from .const import DOMAIN
+from . import BSBLanConfigEntry
 
 
 async def async_get_config_entry_diagnostics(
-    hass: HomeAssistant, entry: ConfigEntry
+    hass: HomeAssistant, entry: BSBLanConfigEntry
 ) -> dict[str, Any]:
     """Return diagnostics for a config entry."""
-    data: BSBLanData = hass.data[DOMAIN][entry.entry_id]
+    data = entry.runtime_data
 
     return {
         "info": data.info.to_dict(),
diff --git a/homeassistant/components/bsblan/sensor.py b/homeassistant/components/bsblan/sensor.py
index 346f972ea9a..eab03d7a50c 100644
--- a/homeassistant/components/bsblan/sensor.py
+++ b/homeassistant/components/bsblan/sensor.py
@@ -11,14 +11,12 @@ from homeassistant.components.sensor import (
     SensorEntityDescription,
     SensorStateClass,
 )
-from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import UnitOfTemperature
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.typing import StateType
 
-from . import BSBLanData
-from .const import DOMAIN
+from . import BSBLanConfigEntry, BSBLanData
 from .coordinator import BSBLanCoordinatorData
 from .entity import BSBLanEntity
 
@@ -52,11 +50,11 @@ SENSOR_TYPES: tuple[BSBLanSensorEntityDescription, ...] = (
 
 async def async_setup_entry(
     hass: HomeAssistant,
-    entry: ConfigEntry,
+    entry: BSBLanConfigEntry,
     async_add_entities: AddEntitiesCallback,
 ) -> None:
     """Set up BSB-Lan sensor based on a config entry."""
-    data: BSBLanData = hass.data[DOMAIN][entry.entry_id]
+    data = entry.runtime_data
     async_add_entities(BSBLanSensor(data, description) for description in SENSOR_TYPES)