diff --git a/pytec/pytec/gui/model/thermostat.py b/pytec/pytec/gui/model/thermostat.py
index f125fdc..3d6b7b9 100644
--- a/pytec/pytec/gui/model/thermostat.py
+++ b/pytec/pytec/gui/model/thermostat.py
@@ -38,6 +38,7 @@ class Thermostat(QObject, metaclass=PropertyMeta):
     async def start_session(self, host, port):
         self.connection_state_changed.emit(ThermostatConnectionState.CONNECTING)
         await self._client.connect(host, port)
+        self.hw_rev = await self.get_hw_rev()
         self.connection_state_changed.emit(ThermostatConnectionState.CONNECTED)
         self.start_watching()
 
@@ -58,8 +59,7 @@ class Thermostat(QObject, metaclass=PropertyMeta):
             await asyncio.sleep(self._update_s)
 
     async def get_hw_rev(self):
-        self.hw_rev = await self._client.hw_rev()
-        return self.hw_rev
+        return await self._client.hw_rev()
 
     async def update_params(self):
         fan_task = asyncio.create_task(self._client.get_fan())
diff --git a/pytec/tec_qt.py b/pytec/tec_qt.py
index b395f52..463abf4 100755
--- a/pytec/tec_qt.py
+++ b/pytec/tec_qt.py
@@ -141,9 +141,10 @@ class MainWindow(QtWidgets.QMainWindow):
         match state:
             case ThermostatConnectionState.CONNECTED:
                 self.connect_btn.setText("Disconnect")
-                hw_rev_d = await self.thermostat.get_hw_rev()
                 self.status_lbl.setText(
-                    f"Connected to Thermostat v{hw_rev_d['rev']['major']}.{hw_rev_d['rev']['minor']}"
+                    "Connected to Thermostat v"
+                    f"{self.thermostat.hw_rev['rev']['major']}."
+                    f"{self.thermostat.hw_rev['rev']['minor']}"
                 )
 
             case ThermostatConnectionState.CONNECTING: