diff --git a/src/core/emsdevice.h b/src/core/emsdevice.h
index 5824f44c1..36bdecf23 100644
--- a/src/core/emsdevice.h
+++ b/src/core/emsdevice.h
@@ -413,6 +413,7 @@ class EMSdevice {
     static constexpr uint8_t EMS_DEVICE_ID_DHW1           = 0x28; // MM100 module as water station
     static constexpr uint8_t EMS_DEVICE_ID_DHW2           = 0x29; // MM100 module as water station
     static constexpr uint8_t EMS_DEVICE_ID_DHW8           = 0x2F; // last DHW module id?
+    static constexpr uint8_t EMS_DEVICE_ID_IPM_DHW        = 0x41; // IPM module as water station
 
     // generic type IDs
     static constexpr uint16_t EMS_TYPE_NAME        = 0x01; // device config for ems devices, name ascii on offset 27ff  for ems+
diff --git a/src/core/emsesp.cpp b/src/core/emsesp.cpp
index 399dd52b1..a5951afea 100644
--- a/src/core/emsesp.cpp
+++ b/src/core/emsesp.cpp
@@ -1303,7 +1303,7 @@ bool EMSESP::add_device(const uint8_t device_id, const uint8_t product_id, const
         }
     }
 
-    if (device_id >= EMSdevice::EMS_DEVICE_ID_DHW1 && device_id <= EMSdevice::EMS_DEVICE_ID_DHW8) {
+    if ((device_id >= EMSdevice::EMS_DEVICE_ID_DHW1 && device_id <= EMSdevice::EMS_DEVICE_ID_DHW8) || device_id == EMSdevice::EMS_DEVICE_ID_IPM_DHW) {
         device_type = DeviceType::WATER;
     }