diff --git a/custom_components/oekofen_pellematic_compact/const.py b/custom_components/oekofen_pellematic_compact/const.py
index 97ba083..b962cb9 100644
--- a/custom_components/oekofen_pellematic_compact/const.py
+++ b/custom_components/oekofen_pellematic_compact/const.py
@@ -47,6 +47,12 @@
         None,
         "mdi:alert-circle",
     ],
+    "L_existing_boiler": [
+        "Existing Boiler",
+        "L_existing_boiler",
+        UnitOfTemperature.CELSIUS,
+        None,
+    ],
 }
 
 SYSTEM_BINARY_SENSOR_TYPES = {
diff --git a/custom_components/oekofen_pellematic_compact/manifest.json b/custom_components/oekofen_pellematic_compact/manifest.json
index 50d7d5c..9823ca3 100644
--- a/custom_components/oekofen_pellematic_compact/manifest.json
+++ b/custom_components/oekofen_pellematic_compact/manifest.json
@@ -11,5 +11,5 @@
   "iot_class": "local_polling",
   "issue_tracker": "https://github.com/dominikamann/oekofen-pellematic-compact/issues",
   "requirements": [],
-  "version": "v3.3.3"
+  "version": "v3.3.4"
 }