diff --git a/esphome/components/micronova/button/micronova_button.cpp b/esphome/components/micronova/button/micronova_button.cpp
index c1903fd87..147fef37b 100644
--- a/esphome/components/micronova/button/micronova_button.cpp
+++ b/esphome/components/micronova/button/micronova_button.cpp
@@ -1,7 +1,6 @@
 #include "micronova_button.h"
 
-namespace esphome {
-namespace micronova {
+namespace esphome::micronova {
 
 void MicroNovaButton::press_action() {
   switch (this->get_function()) {
@@ -14,5 +13,4 @@ void MicroNovaButton::press_action() {
   this->micronova_->update();
 }
 
-}  // namespace micronova
-}  // namespace esphome
+}  // namespace esphome::micronova
diff --git a/esphome/components/micronova/button/micronova_button.h b/esphome/components/micronova/button/micronova_button.h
index 77649051d..5c1d7d845 100644
--- a/esphome/components/micronova/button/micronova_button.h
+++ b/esphome/components/micronova/button/micronova_button.h
@@ -4,8 +4,7 @@
 #include "esphome/core/component.h"
 #include "esphome/components/button/button.h"
 
-namespace esphome {
-namespace micronova {
+namespace esphome::micronova {
 
 class MicroNovaButton : public Component, public button::Button, public MicroNovaButtonListener {
  public:
@@ -19,5 +18,4 @@ class MicroNovaButton : public Component, public button::Button, public MicroNov
   void press_action() override;
 };
 
-}  // namespace micronova
-}  // namespace esphome
+}  // namespace esphome::micronova
diff --git a/esphome/components/micronova/micronova.cpp b/esphome/components/micronova/micronova.cpp
index b96798ed1..52b719bff 100644
--- a/esphome/components/micronova/micronova.cpp
+++ b/esphome/components/micronova/micronova.cpp
@@ -1,8 +1,7 @@
 #include "micronova.h"
 #include "esphome/core/log.h"
 
-namespace esphome {
-namespace micronova {
+namespace esphome::micronova {
 
 void MicroNova::setup() {
   if (this->enable_rx_pin_ != nullptr) {
@@ -144,5 +143,4 @@ void MicroNova::write_address(uint8_t location, uint8_t address, uint8_t data) {
   }
 }
 
-}  // namespace micronova
-}  // namespace esphome
+}  // namespace esphome::micronova
diff --git a/esphome/components/micronova/micronova.h b/esphome/components/micronova/micronova.h
index fc68d941c..acb85fad3 100644
--- a/esphome/components/micronova/micronova.h
+++ b/esphome/components/micronova/micronova.h
@@ -8,8 +8,7 @@
 
 #include <vector>
 
-namespace esphome {
-namespace micronova {
+namespace esphome::micronova {
 
 static const char *const TAG = "micronova";
 static const int STOVE_REPLY_DELAY = 60;
@@ -160,5 +159,4 @@ class MicroNova : public PollingComponent, public uart::UARTDevice {
   MicroNovaSwitchListener *stove_switch_{nullptr};
 };
 
-}  // namespace micronova
-}  // namespace esphome
+}  // namespace esphome::micronova
diff --git a/esphome/components/micronova/number/micronova_number.cpp b/esphome/components/micronova/number/micronova_number.cpp
index 244eb7ee9..b311c85b9 100644
--- a/esphome/components/micronova/number/micronova_number.cpp
+++ b/esphome/components/micronova/number/micronova_number.cpp
@@ -1,7 +1,6 @@
 #include "micronova_number.h"
 
-namespace esphome {
-namespace micronova {
+namespace esphome::micronova {
 
 void MicroNovaNumber::process_value_from_stove(int value_from_stove) {
   float new_sensor_value = 0;
@@ -41,5 +40,4 @@ void MicroNovaNumber::control(float value) {
   this->micronova_->update();
 }
 
-}  // namespace micronova
-}  // namespace esphome
+}  // namespace esphome::micronova
diff --git a/esphome/components/micronova/number/micronova_number.h b/esphome/components/micronova/number/micronova_number.h
index 49c635825..79e59dbc2 100644
--- a/esphome/components/micronova/number/micronova_number.h
+++ b/esphome/components/micronova/number/micronova_number.h
@@ -3,8 +3,7 @@
 #include "esphome/components/micronova/micronova.h"
 #include "esphome/components/number/number.h"
 
-namespace esphome {
-namespace micronova {
+namespace esphome::micronova {
 
 class MicroNovaNumber : public number::Number, public MicroNovaSensorListener {
  public:
@@ -24,5 +23,4 @@ class MicroNovaNumber : public number::Number, public MicroNovaSensorListener {
   uint8_t memory_write_location_ = 0;
 };
 
-}  // namespace micronova
-}  // namespace esphome
+}  // namespace esphome::micronova
diff --git a/esphome/components/micronova/sensor/micronova_sensor.cpp b/esphome/components/micronova/sensor/micronova_sensor.cpp
index 3f0c0feaf..9fd8832f2 100644
--- a/esphome/components/micronova/sensor/micronova_sensor.cpp
+++ b/esphome/components/micronova/sensor/micronova_sensor.cpp
@@ -1,7 +1,6 @@
 #include "micronova_sensor.h"
 
-namespace esphome {
-namespace micronova {
+namespace esphome::micronova {
 
 void MicroNovaSensor::process_value_from_stove(int value_from_stove) {
   if (value_from_stove == -1) {
@@ -31,5 +30,4 @@ void MicroNovaSensor::process_value_from_stove(int value_from_stove) {
   this->publish_state(new_sensor_value);
 }
 
-}  // namespace micronova
-}  // namespace esphome
+}  // namespace esphome::micronova
diff --git a/esphome/components/micronova/sensor/micronova_sensor.h b/esphome/components/micronova/sensor/micronova_sensor.h
index 9d5ae96b8..081e68b09 100644
--- a/esphome/components/micronova/sensor/micronova_sensor.h
+++ b/esphome/components/micronova/sensor/micronova_sensor.h
@@ -3,8 +3,7 @@
 #include "esphome/components/micronova/micronova.h"
 #include "esphome/components/sensor/sensor.h"
 
-namespace esphome {
-namespace micronova {
+namespace esphome::micronova {
 
 class MicroNovaSensor : public sensor::Sensor, public MicroNovaSensorListener {
  public:
@@ -23,5 +22,4 @@ class MicroNovaSensor : public sensor::Sensor, public MicroNovaSensorListener {
   int fan_speed_offset_ = 0;
 };
 
-}  // namespace micronova
-}  // namespace esphome
+}  // namespace esphome::micronova
diff --git a/esphome/components/micronova/switch/micronova_switch.cpp b/esphome/components/micronova/switch/micronova_switch.cpp
index 28674acd9..81d36adcc 100644
--- a/esphome/components/micronova/switch/micronova_switch.cpp
+++ b/esphome/components/micronova/switch/micronova_switch.cpp
@@ -1,7 +1,6 @@
 #include "micronova_switch.h"
 
-namespace esphome {
-namespace micronova {
+namespace esphome::micronova {
 
 void MicroNovaSwitch::write_state(bool state) {
   switch (this->get_function()) {
@@ -31,5 +30,4 @@ void MicroNovaSwitch::write_state(bool state) {
   }
 }
 
-}  // namespace micronova
-}  // namespace esphome
+}  // namespace esphome::micronova
diff --git a/esphome/components/micronova/switch/micronova_switch.h b/esphome/components/micronova/switch/micronova_switch.h
index b0ca33b49..701908435 100644
--- a/esphome/components/micronova/switch/micronova_switch.h
+++ b/esphome/components/micronova/switch/micronova_switch.h
@@ -4,8 +4,7 @@
 #include "esphome/core/component.h"
 #include "esphome/components/switch/switch.h"
 
-namespace esphome {
-namespace micronova {
+namespace esphome::micronova {
 
 class MicroNovaSwitch : public Component, public switch_::Switch, public MicroNovaSwitchListener {
  public:
@@ -25,5 +24,4 @@ class MicroNovaSwitch : public Component, public switch_::Switch, public MicroNo
   void write_state(bool state) override;
 };
 
-}  // namespace micronova
-}  // namespace esphome
+}  // namespace esphome::micronova
diff --git a/esphome/components/micronova/text_sensor/micronova_text_sensor.cpp b/esphome/components/micronova/text_sensor/micronova_text_sensor.cpp
index 03b192ffd..b62fb1afc 100644
--- a/esphome/components/micronova/text_sensor/micronova_text_sensor.cpp
+++ b/esphome/components/micronova/text_sensor/micronova_text_sensor.cpp
@@ -1,7 +1,6 @@
 #include "micronova_text_sensor.h"
 
-namespace esphome {
-namespace micronova {
+namespace esphome::micronova {
 
 void MicroNovaTextSensor::process_value_from_stove(int value_from_stove) {
   if (value_from_stove == -1) {
@@ -27,5 +26,4 @@ void MicroNovaTextSensor::process_value_from_stove(int value_from_stove) {
   }
 }
 
-}  // namespace micronova
-}  // namespace esphome
+}  // namespace esphome::micronova
diff --git a/esphome/components/micronova/text_sensor/micronova_text_sensor.h b/esphome/components/micronova/text_sensor/micronova_text_sensor.h
index b4e5de9bb..352f04965 100644
--- a/esphome/components/micronova/text_sensor/micronova_text_sensor.h
+++ b/esphome/components/micronova/text_sensor/micronova_text_sensor.h
@@ -3,8 +3,7 @@
 #include "esphome/components/micronova/micronova.h"
 #include "esphome/components/text_sensor/text_sensor.h"
 
-namespace esphome {
-namespace micronova {
+namespace esphome::micronova {
 
 class MicroNovaTextSensor : public text_sensor::TextSensor, public MicroNovaSensorListener {
  public:
@@ -16,5 +15,4 @@ class MicroNovaTextSensor : public text_sensor::TextSensor, public MicroNovaSens
   void process_value_from_stove(int value_from_stove) override;
 };
 
-}  // namespace micronova
-}  // namespace esphome
+}  // namespace esphome::micronova