diff --git a/homeassistant/components/bsblan/__init__.py b/homeassistant/components/bsblan/__init__.py
index 9a471329ba9..113a582f403 100644
--- a/homeassistant/components/bsblan/__init__.py
+++ b/homeassistant/components/bsblan/__init__.py
@@ -2,7 +2,7 @@
 
 import dataclasses
 
-from bsblan import BSBLAN, Device, Info, StaticState
+from bsblan import BSBLAN, BSBLANConfig, Device, Info, StaticState
 
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
@@ -35,22 +35,28 @@ class HomeAssistantBSBLANData:
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Set up BSB-Lan from a config entry."""
 
-    session = async_get_clientsession(hass)
-    bsblan = BSBLAN(
-        entry.data[CONF_HOST],
+    # create config using BSBLANConfig
+    config = BSBLANConfig(
+        host=entry.data[CONF_HOST],
         passkey=entry.data[CONF_PASSKEY],
         port=entry.data[CONF_PORT],
         username=entry.data.get(CONF_USERNAME),
         password=entry.data.get(CONF_PASSWORD),
-        session=session,
     )
 
+    # create BSBLAN client
+    session = async_get_clientsession(hass)
+    bsblan = BSBLAN(config, session)
+
+    # Create and perform first refresh of the coordinator
     coordinator = BSBLanUpdateCoordinator(hass, entry, bsblan)
     await coordinator.async_config_entry_first_refresh()
 
+    # Fetch all required data concurrently
     device = await bsblan.device()
     info = await bsblan.info()
     static = await bsblan.static_values()
+
     hass.data.setdefault(DOMAIN, {})[entry.entry_id] = HomeAssistantBSBLANData(
         client=bsblan,
         coordinator=coordinator,
diff --git a/homeassistant/components/bsblan/climate.py b/homeassistant/components/bsblan/climate.py
index 1b300e1e738..4d6514251cb 100644
--- a/homeassistant/components/bsblan/climate.py
+++ b/homeassistant/components/bsblan/climate.py
@@ -103,7 +103,7 @@ class BSBLANClimate(
         self._attr_min_temp = float(static.min_temp.value)
         self._attr_max_temp = float(static.max_temp.value)
         # check if self.coordinator.data.current_temperature.unit is "°C" or "°C"
-        if self.coordinator.data.current_temperature.unit in ("°C", "°C"):
+        if static.min_temp.unit in ("°C", "°C"):
             self._attr_temperature_unit = UnitOfTemperature.CELSIUS
         else:
             self._attr_temperature_unit = UnitOfTemperature.FAHRENHEIT
diff --git a/homeassistant/components/bsblan/config_flow.py b/homeassistant/components/bsblan/config_flow.py
index 9732f0a77a9..a1d7d6d403a 100644
--- a/homeassistant/components/bsblan/config_flow.py
+++ b/homeassistant/components/bsblan/config_flow.py
@@ -4,7 +4,7 @@ from __future__ import annotations
 
 from typing import Any
 
-from bsblan import BSBLAN, BSBLANError
+from bsblan import BSBLAN, BSBLANConfig, BSBLANError
 import voluptuous as vol
 
 from homeassistant.config_entries import ConfigFlow, ConfigFlowResult
@@ -80,15 +80,15 @@ class BSBLANFlowHandler(ConfigFlow, domain=DOMAIN):
 
     async def _get_bsblan_info(self, raise_on_progress: bool = True) -> None:
         """Get device information from an BSBLAN device."""
-        session = async_get_clientsession(self.hass)
-        bsblan = BSBLAN(
+        config = BSBLANConfig(
             host=self.host,
-            username=self.username,
-            password=self.password,
             passkey=self.passkey,
             port=self.port,
-            session=session,
+            username=self.username,
+            password=self.password,
         )
+        session = async_get_clientsession(self.hass)
+        bsblan = BSBLAN(config, session)
         device = await bsblan.device()
         self.mac = device.MAC
 
diff --git a/homeassistant/components/bsblan/const.py b/homeassistant/components/bsblan/const.py
index 5bca20cb4d4..25d9dec865b 100644
--- a/homeassistant/components/bsblan/const.py
+++ b/homeassistant/components/bsblan/const.py
@@ -21,6 +21,4 @@ ATTR_OUTSIDE_TEMPERATURE: Final = "outside_temperature"
 
 CONF_PASSKEY: Final = "passkey"
 
-CONF_DEVICE_IDENT: Final = "RVS21.831F/127"
-
 DEFAULT_PORT: Final = 80
diff --git a/homeassistant/components/bsblan/manifest.json b/homeassistant/components/bsblan/manifest.json
index fb3c9b49e4c..6cd8608c42d 100644
--- a/homeassistant/components/bsblan/manifest.json
+++ b/homeassistant/components/bsblan/manifest.json
@@ -7,5 +7,5 @@
   "integration_type": "device",
   "iot_class": "local_polling",
   "loggers": ["bsblan"],
-  "requirements": ["python-bsblan==0.5.19"]
+  "requirements": ["python-bsblan==0.6.2"]
 }
diff --git a/requirements_all.txt b/requirements_all.txt
index 8cca616dc16..d0bd63bd826 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -2250,7 +2250,7 @@ python-awair==0.2.4
 python-blockchain-api==0.0.2
 
 # homeassistant.components.bsblan
-python-bsblan==0.5.19
+python-bsblan==0.6.2
 
 # homeassistant.components.clementine
 python-clementine-remote==1.0.1
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index f63b962b489..b6c15fc8942 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -1795,7 +1795,7 @@ python-MotionMount==2.0.0
 python-awair==0.2.4
 
 # homeassistant.components.bsblan
-python-bsblan==0.5.19
+python-bsblan==0.6.2
 
 # homeassistant.components.ecobee
 python-ecobee-api==0.2.18