diff --git a/src/ems.cpp b/src/ems.cpp
index 742f20df8..fe5bc5b4b 100644
--- a/src/ems.cpp
+++ b/src/ems.cpp
@@ -1584,21 +1584,6 @@ void ems_setWarmWaterActivated(bool activated) {
     EMS_TxQueue.push(EMS_TxTelegram);
 }
 
-void ems_setWarmWaterModeComfort(bool comfort) {
-    myDebug("Setting boiler warm water to comfort mode %s\n", comfort ? "Comfort" : "Eco");
-
-    _EMS_TxTelegram EMS_TxTelegram = EMS_TX_TELEGRAM_NEW; // create new Tx
-
-    EMS_TxTelegram.action        = EMS_TX_TELEGRAM_WRITE;
-    EMS_TxTelegram.dest          = EMS_ID_BOILER;
-    EMS_TxTelegram.type          = EMS_TYPE_UBAParameterWW;
-    EMS_TxTelegram.offset        = EMS_OFFSET_UBAParameterWW_wwComfort;
-    EMS_TxTelegram.length        = EMS_MIN_TELEGRAM_LENGTH;
-    EMS_TxTelegram.type_validate = EMS_ID_NONE; // don't validate
-    EMS_TxTelegram.dataValue =
-        (comfort ? EMS_VALUE_UBAParameterWW_wwComfort_Comfort : EMS_VALUE_UBAParameterWW_wwComfort_Eco); // 0x00 is on, 0xD8 is off
-    EMS_TxQueue.push(EMS_TxTelegram);
-}
 /**
  * Activate / De-activate the Warm Tap Water
  * true = on, false = off
diff --git a/src/ems.h b/src/ems.h
index a702fddcb..d6921d5d2 100644
--- a/src/ems.h
+++ b/src/ems.h
@@ -49,10 +49,6 @@
 #define EMS_VALUE_UBAParameterWW_wwComfort_Comfort 0x00 // the value for comfort
 #define EMS_VALUE_UBAParameterWW_wwComfort_Eco 0xD8     // the value for eco
 
-#define EMS_OFFSET_UBAParameterWW_wwComfort 9           // WW is in comfort or eco mode
-#define EMS_VALUE_UBAParameterWW_wwComfort_Comfort 0x00 // the value for comfort
-#define EMS_VALUE_UBAParameterWW_wwComfort_Eco 0xD8     // the value for eco
-
 /* 
  * Thermostat...
  */
@@ -321,7 +317,6 @@ void ems_setThermostatTemp(float temp);
 void ems_setThermostatMode(uint8_t mode);
 void ems_setWarmWaterTemp(uint8_t temperature);
 void ems_setWarmWaterActivated(bool activated);
-void ems_setWarmWaterModeComfort(bool comfort);
 void ems_setWarmTapWaterActivated(bool activated);
 void ems_setExperimental(uint8_t value);
 void ems_setPoll(bool b);