diff --git a/infra/heizsteuerung/config.yaml b/infra/heizsteuerung/config.yaml
index b528369ae..78130ec89 100644
--- a/infra/heizsteuerung/config.yaml
+++ b/infra/heizsteuerung/config.yaml
@@ -93,3 +93,10 @@ zones:
     source_sensor: ""
     setpoint: 18.0
     frost_min_c: 5.0
+  - id: wc_unten
+    name: WC unten
+    adapter: zigbee_trv
+    device_name: heizkoerper_wc_unten
+    source_sensor: ""
+    setpoint: 18.0
+    frost_min_c: 5.0