diff --git a/esphome/components/duco/duco.cpp b/esphome/components/duco/duco.cpp
index 553a20839a..4564c7d7b1 100644
--- a/esphome/components/duco/duco.cpp
+++ b/esphome/components/duco/duco.cpp
@@ -189,7 +189,5 @@ void Duco::debug_hex(std::vector<uint8_t> bytes, uint8_t separator) {
   delay(10);
 }
 
-void Duco::add_sensor_item(DucoDevice *sensor) { sensor->set_parent(this); }
-
 }  // namespace duco
 }  // namespace esphome
diff --git a/esphome/components/duco/duco.h b/esphome/components/duco/duco.h
index 910ab02499..3c8586686c 100644
--- a/esphome/components/duco/duco.h
+++ b/esphome/components/duco/duco.h
@@ -29,8 +29,6 @@ class Duco : public uart::UARTDevice, public Component {
   void set_send_wait_time(uint16_t time_in_ms) { send_wait_time_ = time_in_ms; }
   void set_disable_crc(bool disable_crc) { disable_crc_ = disable_crc; }
 
-  void add_sensor_item(DucoDevice *sensor);
-
   std::map<uint8_t, DucoDevice *> waiting_for_response;
   void stop_waiting(uint8_t message_id);
 
diff --git a/esphome/components/duco/select/__init__.py b/esphome/components/duco/select/__init__.py
index d3d3573946..e005a28609 100644
--- a/esphome/components/duco/select/__init__.py
+++ b/esphome/components/duco/select/__init__.py
@@ -44,4 +44,4 @@ async def to_code(config):
     await select.register_select(var, config, options=DUCO_MODE_OPTIONS)
 
     parent = await cg.get_variable(config[CONF_DUCO_ID])
-    cg.add(parent.add_sensor_item(var))
+    cg.add(var.set_parent(parent))
diff --git a/esphome/components/duco/text_sensor/__init__.py b/esphome/components/duco/text_sensor/__init__.py
index befb32c73f..c8c4d761ef 100644
--- a/esphome/components/duco/text_sensor/__init__.py
+++ b/esphome/components/duco/text_sensor/__init__.py
@@ -27,4 +27,4 @@ async def to_code(config):
     await text_sensor.register_text_sensor(var, config)
 
     parent = await cg.get_variable(config[CONF_DUCO_ID])
-    cg.add(parent.add_sensor_item(var))
+    cg.add(var.set_parent(parent))