From 223596a25fcf35f081b8f29a4ab9ef78c82d13cb Mon Sep 17 00:00:00 2001
From: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
Date: Mon, 15 Jun 2026 13:20:32 +1200
Subject: [PATCH] Mark user-configurable classes as final (part 10/21)

Add the C++ `final` specifier to leaf, user-configurable component classes and
automation action/trigger/condition primitives so that classes meant to be
terminal cannot be subclassed by external components. Only classes never used as
a base anywhere in the tree are marked. Part 10 of 21, split alphabetically by
component (matrix_keypad .. micronova).
---
 .../matrix_keypad_binary_sensor.h             |  2 +-
 .../components/matrix_keypad/matrix_keypad.h  |  4 ++--
 esphome/components/max17043/automation.h      |  2 +-
 esphome/components/max17043/max17043.h        |  2 +-
 esphome/components/max31855/max31855.h        |  8 ++++----
 esphome/components/max31856/max31856.h        |  8 ++++----
 esphome/components/max31865/max31865.h        |  8 ++++----
 esphome/components/max44009/max44009.h        |  2 +-
 esphome/components/max6675/max6675.h          |  8 ++++----
 esphome/components/max6956/automation.h       |  4 ++--
 esphome/components/max6956/max6956.h          |  4 ++--
 .../max6956/output/max6956_led_output.h       |  2 +-
 esphome/components/max7219/max7219.h          |  6 +++---
 esphome/components/max7219digit/automation.h  |  8 ++++----
 .../components/max7219digit/max7219digit.h    |  6 +++---
 esphome/components/max9611/max9611.h          |  2 +-
 esphome/components/mcp23008/mcp23008.h        |  2 +-
 esphome/components/mcp23016/mcp23016.h        |  4 ++--
 esphome/components/mcp23017/mcp23017.h        |  2 +-
 esphome/components/mcp23s08/mcp23s08.h        |  6 +++---
 esphome/components/mcp23s17/mcp23s17.h        |  6 +++---
 .../components/mcp23xxx_base/mcp23xxx_base.h  |  2 +-
 esphome/components/mcp2515/mcp2515.h          |  6 +++---
 esphome/components/mcp3008/mcp3008.h          |  8 ++++----
 .../mcp3008/sensor/mcp3008_sensor.h           |  8 ++++----
 esphome/components/mcp3204/mcp3204.h          |  6 +++---
 .../mcp3204/sensor/mcp3204_sensor.h           |  8 ++++----
 esphome/components/mcp3221/mcp3221_sensor.h   |  8 ++++----
 esphome/components/mcp4461/mcp4461.h          |  2 +-
 .../mcp4461/output/mcp4461_output.h           |  2 +-
 esphome/components/mcp4725/mcp4725.h          |  2 +-
 esphome/components/mcp4728/mcp4728.h          |  2 +-
 .../mcp4728/output/mcp4728_output.h           |  2 +-
 esphome/components/mcp47a1/mcp47a1.h          |  2 +-
 esphome/components/mcp9600/mcp9600.h          |  2 +-
 esphome/components/mcp9808/mcp9808.h          |  2 +-
 esphome/components/media_player/automation.h  | 20 +++++++++----------
 esphome/components/mhz19/mhz19.h              | 11 +++++-----
 .../micronova/button/micronova_button.h       |  2 +-
 esphome/components/micronova/micronova.h      |  2 +-
 .../micronova/number/micronova_number.h       |  2 +-
 .../micronova/sensor/micronova_sensor.h       |  2 +-
 .../micronova/switch/micronova_switch.h       |  2 +-
 .../text_sensor/micronova_text_sensor.h       |  2 +-
 44 files changed, 101 insertions(+), 100 deletions(-)

diff --git a/esphome/components/matrix_keypad/binary_sensor/matrix_keypad_binary_sensor.h b/esphome/components/matrix_keypad/binary_sensor/matrix_keypad_binary_sensor.h
index 53ae0b5c03..000a9e5de3 100644
--- a/esphome/components/matrix_keypad/binary_sensor/matrix_keypad_binary_sensor.h
+++ b/esphome/components/matrix_keypad/binary_sensor/matrix_keypad_binary_sensor.h
@@ -5,7 +5,7 @@
 
 namespace esphome::matrix_keypad {
 
-class MatrixKeypadBinarySensor : public MatrixKeypadListener, public binary_sensor::BinarySensorInitiallyOff {
+class MatrixKeypadBinarySensor final : public MatrixKeypadListener, public binary_sensor::BinarySensorInitiallyOff {
  public:
   MatrixKeypadBinarySensor(uint8_t key) : has_key_(true), key_(key){};
   MatrixKeypadBinarySensor(const char *key) : has_key_(true), key_((uint8_t) key[0]){};
diff --git a/esphome/components/matrix_keypad/matrix_keypad.h b/esphome/components/matrix_keypad/matrix_keypad.h
index 1e263842ea..8c9acc8e0c 100644
--- a/esphome/components/matrix_keypad/matrix_keypad.h
+++ b/esphome/components/matrix_keypad/matrix_keypad.h
@@ -18,9 +18,9 @@ class MatrixKeypadListener {
   virtual void key_released(uint8_t key){};
 };
 
-class MatrixKeyTrigger : public Trigger<uint8_t> {};
+class MatrixKeyTrigger final : public Trigger<uint8_t> {};
 
-class MatrixKeypad : public key_provider::KeyProvider, public Component {
+class MatrixKeypad final : public key_provider::KeyProvider, public Component {
  public:
   void setup() override;
   void loop() override;
diff --git a/esphome/components/max17043/automation.h b/esphome/components/max17043/automation.h
index c98516d259..6b19e5bd5e 100644
--- a/esphome/components/max17043/automation.h
+++ b/esphome/components/max17043/automation.h
@@ -5,7 +5,7 @@
 
 namespace esphome::max17043 {
 
-template<typename... Ts> class SleepAction : public Action<Ts...> {
+template<typename... Ts> class SleepAction final : public Action<Ts...> {
  public:
   explicit SleepAction(MAX17043Component *max17043) : max17043_(max17043) {}
 
diff --git a/esphome/components/max17043/max17043.h b/esphome/components/max17043/max17043.h
index dd2e35df55..ffe4d916ba 100644
--- a/esphome/components/max17043/max17043.h
+++ b/esphome/components/max17043/max17043.h
@@ -6,7 +6,7 @@
 
 namespace esphome::max17043 {
 
-class MAX17043Component : public PollingComponent, public i2c::I2CDevice {
+class MAX17043Component final : public PollingComponent, public i2c::I2CDevice {
  public:
   void setup() override;
   void dump_config() override;
diff --git a/esphome/components/max31855/max31855.h b/esphome/components/max31855/max31855.h
index dd7a205268..527d26f99d 100644
--- a/esphome/components/max31855/max31855.h
+++ b/esphome/components/max31855/max31855.h
@@ -8,10 +8,10 @@
 
 namespace esphome::max31855 {
 
-class MAX31855Sensor : public sensor::Sensor,
-                       public PollingComponent,
-                       public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH,
-                                             spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_4MHZ> {
+class MAX31855Sensor final : public sensor::Sensor,
+                             public PollingComponent,
+                             public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH,
+                                                   spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_4MHZ> {
  public:
   void set_reference_sensor(sensor::Sensor *temperature_sensor) { temperature_reference_ = temperature_sensor; }
 
diff --git a/esphome/components/max31856/max31856.h b/esphome/components/max31856/max31856.h
index 0a983b72d9..83aa815aa0 100644
--- a/esphome/components/max31856/max31856.h
+++ b/esphome/components/max31856/max31856.h
@@ -68,10 +68,10 @@ enum MAX31856ConfigFilter {
   FILTER_50HZ = 1,
 };
 
-class MAX31856Sensor : public sensor::Sensor,
-                       public PollingComponent,
-                       public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
-                                             spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_4MHZ> {
+class MAX31856Sensor final : public sensor::Sensor,
+                             public PollingComponent,
+                             public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
+                                                   spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_4MHZ> {
  public:
   void setup() override;
   void dump_config() override;
diff --git a/esphome/components/max31865/max31865.h b/esphome/components/max31865/max31865.h
index 3362cd30de..27c107ba0b 100644
--- a/esphome/components/max31865/max31865.h
+++ b/esphome/components/max31865/max31865.h
@@ -22,10 +22,10 @@ enum MAX31865ConfigFilter {
   FILTER_50HZ = 1,
 };
 
-class MAX31865Sensor : public sensor::Sensor,
-                       public PollingComponent,
-                       public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
-                                             spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_4MHZ> {
+class MAX31865Sensor final : public sensor::Sensor,
+                             public PollingComponent,
+                             public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
+                                                   spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_4MHZ> {
  public:
   void set_reference_resistance(float reference_resistance) { reference_resistance_ = reference_resistance; }
   void set_nominal_resistance(float nominal_resistance) { rtd_nominal_resistance_ = nominal_resistance; }
diff --git a/esphome/components/max44009/max44009.h b/esphome/components/max44009/max44009.h
index 12fd0b1ce0..b62aed7a56 100644
--- a/esphome/components/max44009/max44009.h
+++ b/esphome/components/max44009/max44009.h
@@ -9,7 +9,7 @@ namespace esphome::max44009 {
 enum MAX44009Mode { MAX44009_MODE_AUTO, MAX44009_MODE_LOW_POWER, MAX44009_MODE_CONTINUOUS };
 
 /// This class implements support for the MAX44009 Illuminance i2c sensor.
-class MAX44009Sensor : public sensor::Sensor, public PollingComponent, public i2c::I2CDevice {
+class MAX44009Sensor final : public sensor::Sensor, public PollingComponent, public i2c::I2CDevice {
  public:
   MAX44009Sensor() {}
 
diff --git a/esphome/components/max6675/max6675.h b/esphome/components/max6675/max6675.h
index e7b5c4dbde..fc46c8c047 100644
--- a/esphome/components/max6675/max6675.h
+++ b/esphome/components/max6675/max6675.h
@@ -6,10 +6,10 @@
 
 namespace esphome::max6675 {
 
-class MAX6675Sensor : public sensor::Sensor,
-                      public PollingComponent,
-                      public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW, spi::CLOCK_PHASE_LEADING,
-                                            spi::DATA_RATE_1MHZ> {
+class MAX6675Sensor final : public sensor::Sensor,
+                            public PollingComponent,
+                            public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
+                                                  spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_1MHZ> {
  public:
   void setup() override;
   void dump_config() override;
diff --git a/esphome/components/max6956/automation.h b/esphome/components/max6956/automation.h
index 547ed5a865..f1db2e3240 100644
--- a/esphome/components/max6956/automation.h
+++ b/esphome/components/max6956/automation.h
@@ -6,7 +6,7 @@
 
 namespace esphome::max6956 {
 
-template<typename... Ts> class SetCurrentGlobalAction : public Action<Ts...> {
+template<typename... Ts> class SetCurrentGlobalAction final : public Action<Ts...> {
  public:
   SetCurrentGlobalAction(MAX6956 *max6956) : max6956_(max6956) {}
 
@@ -21,7 +21,7 @@ template<typename... Ts> class SetCurrentGlobalAction : public Action<Ts...> {
   MAX6956 *max6956_;
 };
 
-template<typename... Ts> class SetCurrentModeAction : public Action<Ts...> {
+template<typename... Ts> class SetCurrentModeAction final : public Action<Ts...> {
  public:
   SetCurrentModeAction(MAX6956 *max6956) : max6956_(max6956) {}
 
diff --git a/esphome/components/max6956/max6956.h b/esphome/components/max6956/max6956.h
index 83ccfab559..4dbee16528 100644
--- a/esphome/components/max6956/max6956.h
+++ b/esphome/components/max6956/max6956.h
@@ -35,7 +35,7 @@ enum MAX6956GPIOFlag { FLAG_LED = 0x20 };
 
 enum MAX6956CURRENTMODE { GLOBAL = 0x00, SEGMENT = 0x01 };
 
-class MAX6956 : public Component, public i2c::I2CDevice {
+class MAX6956 final : public Component, public i2c::I2CDevice {
  public:
   MAX6956() = default;
 
@@ -69,7 +69,7 @@ class MAX6956 : public Component, public i2c::I2CDevice {
   int8_t prev_bright_[28] = {0};
 };
 
-class MAX6956GPIOPin : public GPIOPin {
+class MAX6956GPIOPin final : public GPIOPin {
  public:
   void setup() override;
   void pin_mode(gpio::Flags flags) override;
diff --git a/esphome/components/max6956/output/max6956_led_output.h b/esphome/components/max6956/output/max6956_led_output.h
index 49e5b9ef84..c40e41371d 100644
--- a/esphome/components/max6956/output/max6956_led_output.h
+++ b/esphome/components/max6956/output/max6956_led_output.h
@@ -7,7 +7,7 @@ namespace esphome::max6956 {
 
 class MAX6956;
 
-class MAX6956LedChannel : public output::FloatOutput, public Component {
+class MAX6956LedChannel final : public output::FloatOutput, public Component {
  public:
   void set_parent(MAX6956 *parent) { this->parent_ = parent; }
   void set_pin(uint8_t pin) { pin_ = pin; }
diff --git a/esphome/components/max7219/max7219.h b/esphome/components/max7219/max7219.h
index ef38628f28..3eb4b8e27f 100644
--- a/esphome/components/max7219/max7219.h
+++ b/esphome/components/max7219/max7219.h
@@ -12,9 +12,9 @@ class MAX7219Component;
 
 using max7219_writer_t = display::DisplayWriter<MAX7219Component>;
 
-class MAX7219Component : public PollingComponent,
-                         public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
-                                               spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_1MHZ> {
+class MAX7219Component final : public PollingComponent,
+                               public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
+                                                     spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_1MHZ> {
  public:
   explicit MAX7219Component(uint8_t num_chips);
 
diff --git a/esphome/components/max7219digit/automation.h b/esphome/components/max7219digit/automation.h
index 485a34075e..f06dfd5087 100644
--- a/esphome/components/max7219digit/automation.h
+++ b/esphome/components/max7219digit/automation.h
@@ -7,7 +7,7 @@
 
 namespace esphome::max7219digit {
 
-template<typename... Ts> class DisplayInvertAction : public Action<Ts...>, public Parented<MAX7219Component> {
+template<typename... Ts> class DisplayInvertAction final : public Action<Ts...>, public Parented<MAX7219Component> {
  public:
   TEMPLATABLE_VALUE(bool, state)
 
@@ -17,7 +17,7 @@ template<typename... Ts> class DisplayInvertAction : public Action<Ts...>, publi
   }
 };
 
-template<typename... Ts> class DisplayVisibilityAction : public Action<Ts...>, public Parented<MAX7219Component> {
+template<typename... Ts> class DisplayVisibilityAction final : public Action<Ts...>, public Parented<MAX7219Component> {
  public:
   TEMPLATABLE_VALUE(bool, state)
 
@@ -27,7 +27,7 @@ template<typename... Ts> class DisplayVisibilityAction : public Action<Ts...>, p
   }
 };
 
-template<typename... Ts> class DisplayReverseAction : public Action<Ts...>, public Parented<MAX7219Component> {
+template<typename... Ts> class DisplayReverseAction final : public Action<Ts...>, public Parented<MAX7219Component> {
  public:
   TEMPLATABLE_VALUE(bool, state)
 
@@ -37,7 +37,7 @@ template<typename... Ts> class DisplayReverseAction : public Action<Ts...>, publ
   }
 };
 
-template<typename... Ts> class DisplayIntensityAction : public Action<Ts...>, public Parented<MAX7219Component> {
+template<typename... Ts> class DisplayIntensityAction final : public Action<Ts...>, public Parented<MAX7219Component> {
  public:
   TEMPLATABLE_VALUE(uint8_t, state)
 
diff --git a/esphome/components/max7219digit/max7219digit.h b/esphome/components/max7219digit/max7219digit.h
index bbf43059dd..9e6db20444 100644
--- a/esphome/components/max7219digit/max7219digit.h
+++ b/esphome/components/max7219digit/max7219digit.h
@@ -24,9 +24,9 @@ class MAX7219Component;
 
 using max7219_writer_t = display::DisplayWriter<MAX7219Component>;
 
-class MAX7219Component : public display::DisplayBuffer,
-                         public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
-                                               spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_1MHZ> {
+class MAX7219Component final : public display::DisplayBuffer,
+                               public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
+                                                     spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_1MHZ> {
  public:
   void set_writer(max7219_writer_t &&writer) { this->writer_local_ = writer; };
 
diff --git a/esphome/components/max9611/max9611.h b/esphome/components/max9611/max9611.h
index b6fb5d8127..54e6414c79 100644
--- a/esphome/components/max9611/max9611.h
+++ b/esphome/components/max9611/max9611.h
@@ -33,7 +33,7 @@ enum MAX9611RegisterMap {
   CONTROL_REGISTER_2_ADRR = 0x0B,
 };
 
-class MAX9611Component : public PollingComponent, public i2c::I2CDevice {
+class MAX9611Component final : public PollingComponent, public i2c::I2CDevice {
  public:
   void setup() override;
   void dump_config() override;
diff --git a/esphome/components/mcp23008/mcp23008.h b/esphome/components/mcp23008/mcp23008.h
index ae2f9e1f3c..38bd9c1ac4 100644
--- a/esphome/components/mcp23008/mcp23008.h
+++ b/esphome/components/mcp23008/mcp23008.h
@@ -7,7 +7,7 @@
 
 namespace esphome::mcp23008 {
 
-class MCP23008 : public mcp23x08_base::MCP23X08Base, public i2c::I2CDevice {
+class MCP23008 final : public mcp23x08_base::MCP23X08Base, public i2c::I2CDevice {
  public:
   MCP23008() = default;
 
diff --git a/esphome/components/mcp23016/mcp23016.h b/esphome/components/mcp23016/mcp23016.h
index 4a936a5b02..14c0c9a2fc 100644
--- a/esphome/components/mcp23016/mcp23016.h
+++ b/esphome/components/mcp23016/mcp23016.h
@@ -24,7 +24,7 @@ enum MCP23016GPIORegisters {
   MCP23016_IOCON1 = 0x0B,
 };
 
-class MCP23016 : public Component, public i2c::I2CDevice, public gpio_expander::CachedGpioExpander<uint16_t, 16> {
+class MCP23016 final : public Component, public i2c::I2CDevice, public gpio_expander::CachedGpioExpander<uint16_t, 16> {
  public:
   MCP23016() = default;
 
@@ -56,7 +56,7 @@ class MCP23016 : public Component, public i2c::I2CDevice, public gpio_expander::
   InternalGPIOPin *interrupt_pin_{nullptr};
 };
 
-class MCP23016GPIOPin : public GPIOPin {
+class MCP23016GPIOPin final : public GPIOPin {
  public:
   void setup() override;
   void pin_mode(gpio::Flags flags) override;
diff --git a/esphome/components/mcp23017/mcp23017.h b/esphome/components/mcp23017/mcp23017.h
index 86b84f9ad8..c745322bdf 100644
--- a/esphome/components/mcp23017/mcp23017.h
+++ b/esphome/components/mcp23017/mcp23017.h
@@ -7,7 +7,7 @@
 
 namespace esphome::mcp23017 {
 
-class MCP23017 : public mcp23x17_base::MCP23X17Base, public i2c::I2CDevice {
+class MCP23017 final : public mcp23x17_base::MCP23X17Base, public i2c::I2CDevice {
  public:
   MCP23017() = default;
 
diff --git a/esphome/components/mcp23s08/mcp23s08.h b/esphome/components/mcp23s08/mcp23s08.h
index 441525469f..270d1467e2 100644
--- a/esphome/components/mcp23s08/mcp23s08.h
+++ b/esphome/components/mcp23s08/mcp23s08.h
@@ -7,9 +7,9 @@
 
 namespace esphome::mcp23s08 {
 
-class MCP23S08 : public mcp23x08_base::MCP23X08Base,
-                 public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW, spi::CLOCK_PHASE_LEADING,
-                                       spi::DATA_RATE_10MHZ> {
+class MCP23S08 final : public mcp23x08_base::MCP23X08Base,
+                       public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
+                                             spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_10MHZ> {
  public:
   MCP23S08() = default;
 
diff --git a/esphome/components/mcp23s17/mcp23s17.h b/esphome/components/mcp23s17/mcp23s17.h
index 0cc9321c88..5346b2c8e2 100644
--- a/esphome/components/mcp23s17/mcp23s17.h
+++ b/esphome/components/mcp23s17/mcp23s17.h
@@ -7,9 +7,9 @@
 
 namespace esphome::mcp23s17 {
 
-class MCP23S17 : public mcp23x17_base::MCP23X17Base,
-                 public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW, spi::CLOCK_PHASE_LEADING,
-                                       spi::DATA_RATE_8MHZ> {
+class MCP23S17 final : public mcp23x17_base::MCP23X17Base,
+                       public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
+                                             spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_8MHZ> {
  public:
   MCP23S17() = default;
 
diff --git a/esphome/components/mcp23xxx_base/mcp23xxx_base.h b/esphome/components/mcp23xxx_base/mcp23xxx_base.h
index 5904a1eef6..1c45b0f4af 100644
--- a/esphome/components/mcp23xxx_base/mcp23xxx_base.h
+++ b/esphome/components/mcp23xxx_base/mcp23xxx_base.h
@@ -56,7 +56,7 @@ template<uint8_t N> class MCP23XXXBase : public Component, public gpio_expander:
   InternalGPIOPin *interrupt_pin_{nullptr};
 };
 
-template<uint8_t N> class MCP23XXXGPIOPin : public GPIOPin {
+template<uint8_t N> class MCP23XXXGPIOPin final : public GPIOPin {
  public:
   void setup() override;
   void pin_mode(gpio::Flags flags) override;
diff --git a/esphome/components/mcp2515/mcp2515.h b/esphome/components/mcp2515/mcp2515.h
index b77d9a2582..960e150800 100644
--- a/esphome/components/mcp2515/mcp2515.h
+++ b/esphome/components/mcp2515/mcp2515.h
@@ -51,9 +51,9 @@ enum STAT : uint8_t { STAT_RX0IF = (1 << 0), STAT_RX1IF = (1 << 1) };
 static const uint8_t STAT_RXIF_MASK = STAT_RX0IF | STAT_RX1IF;
 static const uint8_t EFLG_ERRORMASK = EFLG_RX1OVR | EFLG_RX0OVR | EFLG_TXBO | EFLG_TXEP | EFLG_RXEP;
 
-class MCP2515 : public canbus::Canbus,
-                public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW, spi::CLOCK_PHASE_LEADING,
-                                      spi::DATA_RATE_8MHZ> {
+class MCP2515 final : public canbus::Canbus,
+                      public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW, spi::CLOCK_PHASE_LEADING,
+                                            spi::DATA_RATE_8MHZ> {
  public:
   MCP2515(){};
   void set_mcp_clock(CanClock clock) { this->mcp_clock_ = clock; };
diff --git a/esphome/components/mcp3008/mcp3008.h b/esphome/components/mcp3008/mcp3008.h
index 1b1b50c793..d45d587ae8 100644
--- a/esphome/components/mcp3008/mcp3008.h
+++ b/esphome/components/mcp3008/mcp3008.h
@@ -6,10 +6,10 @@
 
 namespace esphome::mcp3008 {
 
-class MCP3008 : public Component,
-                public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW, spi::CLOCK_PHASE_LEADING,
-                                      spi::DATA_RATE_75KHZ> {  // Running at the slowest max speed supported by the
-                                                               // mcp3008. 2.7v = 75ksps
+class MCP3008 final : public Component,
+                      public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW, spi::CLOCK_PHASE_LEADING,
+                                            spi::DATA_RATE_75KHZ> {  // Running at the slowest max speed supported by
+                                                                     // the mcp3008. 2.7v = 75ksps
  public:
   void setup() override;
   void dump_config() override;
diff --git a/esphome/components/mcp3008/sensor/mcp3008_sensor.h b/esphome/components/mcp3008/sensor/mcp3008_sensor.h
index 9267f80ea8..d72d521f65 100644
--- a/esphome/components/mcp3008/sensor/mcp3008_sensor.h
+++ b/esphome/components/mcp3008/sensor/mcp3008_sensor.h
@@ -8,10 +8,10 @@
 
 namespace esphome::mcp3008 {
 
-class MCP3008Sensor : public PollingComponent,
-                      public sensor::Sensor,
-                      public voltage_sampler::VoltageSampler,
-                      public Parented<MCP3008> {
+class MCP3008Sensor final : public PollingComponent,
+                            public sensor::Sensor,
+                            public voltage_sampler::VoltageSampler,
+                            public Parented<MCP3008> {
  public:
   void set_reference_voltage(float reference_voltage) { this->reference_voltage_ = reference_voltage; }
   void set_pin(uint8_t pin) { this->pin_ = pin; }
diff --git a/esphome/components/mcp3204/mcp3204.h b/esphome/components/mcp3204/mcp3204.h
index 8ce592f386..6b835b67df 100644
--- a/esphome/components/mcp3204/mcp3204.h
+++ b/esphome/components/mcp3204/mcp3204.h
@@ -6,9 +6,9 @@
 
 namespace esphome::mcp3204 {
 
-class MCP3204 : public Component,
-                public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW, spi::CLOCK_PHASE_LEADING,
-                                      spi::DATA_RATE_1MHZ> {
+class MCP3204 final : public Component,
+                      public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW, spi::CLOCK_PHASE_LEADING,
+                                            spi::DATA_RATE_1MHZ> {
  public:
   MCP3204() = default;
 
diff --git a/esphome/components/mcp3204/sensor/mcp3204_sensor.h b/esphome/components/mcp3204/sensor/mcp3204_sensor.h
index 5fe5f54d1b..54835c232b 100644
--- a/esphome/components/mcp3204/sensor/mcp3204_sensor.h
+++ b/esphome/components/mcp3204/sensor/mcp3204_sensor.h
@@ -9,10 +9,10 @@
 
 namespace esphome::mcp3204 {
 
-class MCP3204Sensor : public PollingComponent,
-                      public Parented<MCP3204>,
-                      public sensor::Sensor,
-                      public voltage_sampler::VoltageSampler {
+class MCP3204Sensor final : public PollingComponent,
+                            public Parented<MCP3204>,
+                            public sensor::Sensor,
+                            public voltage_sampler::VoltageSampler {
  public:
   MCP3204Sensor(uint8_t pin, bool differential_mode) : pin_(pin), differential_mode_(differential_mode) {}
 
diff --git a/esphome/components/mcp3221/mcp3221_sensor.h b/esphome/components/mcp3221/mcp3221_sensor.h
index deef14e14d..38b62c609f 100644
--- a/esphome/components/mcp3221/mcp3221_sensor.h
+++ b/esphome/components/mcp3221/mcp3221_sensor.h
@@ -10,10 +10,10 @@
 
 namespace esphome::mcp3221 {
 
-class MCP3221Sensor : public sensor::Sensor,
-                      public PollingComponent,
-                      public voltage_sampler::VoltageSampler,
-                      public i2c::I2CDevice {
+class MCP3221Sensor final : public sensor::Sensor,
+                            public PollingComponent,
+                            public voltage_sampler::VoltageSampler,
+                            public i2c::I2CDevice {
  public:
   void set_reference_voltage(float reference_voltage) { this->reference_voltage_ = reference_voltage; }
   void update() override;
diff --git a/esphome/components/mcp4461/mcp4461.h b/esphome/components/mcp4461/mcp4461.h
index 3a76f855b8..a577a4b482 100644
--- a/esphome/components/mcp4461/mcp4461.h
+++ b/esphome/components/mcp4461/mcp4461.h
@@ -57,7 +57,7 @@ enum class Mcp4461TerminalIdx : uint8_t { MCP4461_TERMINAL_0 = 0, MCP4461_TERMIN
 class Mcp4461Wiper;
 
 // Mcp4461Component
-class Mcp4461Component : public Component, public i2c::I2CDevice {
+class Mcp4461Component final : public Component, public i2c::I2CDevice {
  public:
   Mcp4461Component(bool disable_wiper_0, bool disable_wiper_1, bool disable_wiper_2, bool disable_wiper_3)
       : wiper_0_disabled_(disable_wiper_0),
diff --git a/esphome/components/mcp4461/output/mcp4461_output.h b/esphome/components/mcp4461/output/mcp4461_output.h
index 73eadceb50..20d81d825a 100644
--- a/esphome/components/mcp4461/output/mcp4461_output.h
+++ b/esphome/components/mcp4461/output/mcp4461_output.h
@@ -7,7 +7,7 @@
 
 namespace esphome::mcp4461 {
 
-class Mcp4461Wiper : public output::FloatOutput, public Parented<Mcp4461Component> {
+class Mcp4461Wiper final : public output::FloatOutput, public Parented<Mcp4461Component> {
  public:
   Mcp4461Wiper(Mcp4461Component *parent, Mcp4461WiperIdx wiper) : parent_(parent), wiper_(wiper) {}
   /// @brief Set level of wiper
diff --git a/esphome/components/mcp4725/mcp4725.h b/esphome/components/mcp4725/mcp4725.h
index 1acefc3ee4..4f1f128e52 100644
--- a/esphome/components/mcp4725/mcp4725.h
+++ b/esphome/components/mcp4725/mcp4725.h
@@ -8,7 +8,7 @@ static const uint8_t MCP4725_ADDR = 0x60;
 static const uint8_t MCP4725_RES = 12;
 
 namespace esphome::mcp4725 {
-class MCP4725 : public Component, public output::FloatOutput, public i2c::I2CDevice {
+class MCP4725 final : public Component, public output::FloatOutput, public i2c::I2CDevice {
  public:
   void setup() override;
   void dump_config() override;
diff --git a/esphome/components/mcp4728/mcp4728.h b/esphome/components/mcp4728/mcp4728.h
index 13076b3c4c..e7511e5237 100644
--- a/esphome/components/mcp4728/mcp4728.h
+++ b/esphome/components/mcp4728/mcp4728.h
@@ -38,7 +38,7 @@ struct DACInputData {
 class MCP4728Channel;
 
 /// MCP4728 float output component.
-class MCP4728Component : public Component, public i2c::I2CDevice {
+class MCP4728Component final : public Component, public i2c::I2CDevice {
  public:
   MCP4728Component(bool store_in_eeprom) : store_in_eeprom_(store_in_eeprom) {}
 
diff --git a/esphome/components/mcp4728/output/mcp4728_output.h b/esphome/components/mcp4728/output/mcp4728_output.h
index 3ea65ecc7b..827ce1517d 100644
--- a/esphome/components/mcp4728/output/mcp4728_output.h
+++ b/esphome/components/mcp4728/output/mcp4728_output.h
@@ -7,7 +7,7 @@
 
 namespace esphome::mcp4728 {
 
-class MCP4728Channel : public output::FloatOutput {
+class MCP4728Channel final : public output::FloatOutput {
  public:
   MCP4728Channel(MCP4728Component *parent, MCP4728ChannelIdx channel, MCP4728Vref vref, MCP4728Gain gain,
                  MCP4728PwrDown pwrdown)
diff --git a/esphome/components/mcp47a1/mcp47a1.h b/esphome/components/mcp47a1/mcp47a1.h
index da9794e5aa..b72c125574 100644
--- a/esphome/components/mcp47a1/mcp47a1.h
+++ b/esphome/components/mcp47a1/mcp47a1.h
@@ -6,7 +6,7 @@
 
 namespace esphome::mcp47a1 {
 
-class MCP47A1 : public Component, public output::FloatOutput, public i2c::I2CDevice {
+class MCP47A1 final : public Component, public output::FloatOutput, public i2c::I2CDevice {
  public:
   void dump_config() override;
   void write_state(float state) override;
diff --git a/esphome/components/mcp9600/mcp9600.h b/esphome/components/mcp9600/mcp9600.h
index b7c0c834ab..523c9ace2f 100644
--- a/esphome/components/mcp9600/mcp9600.h
+++ b/esphome/components/mcp9600/mcp9600.h
@@ -17,7 +17,7 @@ enum MCP9600ThermocoupleType : uint8_t {
   MCP9600_THERMOCOUPLE_TYPE_R = 0b111,
 };
 
-class MCP9600Component : public PollingComponent, public i2c::I2CDevice {
+class MCP9600Component final : public PollingComponent, public i2c::I2CDevice {
  public:
   void setup() override;
   void dump_config() override;
diff --git a/esphome/components/mcp9808/mcp9808.h b/esphome/components/mcp9808/mcp9808.h
index 89530d9ed0..b4ae51bf6f 100644
--- a/esphome/components/mcp9808/mcp9808.h
+++ b/esphome/components/mcp9808/mcp9808.h
@@ -6,7 +6,7 @@
 
 namespace esphome::mcp9808 {
 
-class MCP9808Sensor : public sensor::Sensor, public PollingComponent, public i2c::I2CDevice {
+class MCP9808Sensor final : public sensor::Sensor, public PollingComponent, public i2c::I2CDevice {
  public:
   void setup() override;
   void dump_config() override;
diff --git a/esphome/components/media_player/automation.h b/esphome/components/media_player/automation.h
index 9319335872..899acfefdf 100644
--- a/esphome/components/media_player/automation.h
+++ b/esphome/components/media_player/automation.h
@@ -6,7 +6,7 @@
 namespace esphome::media_player {
 
 template<MediaPlayerCommand Command, typename... Ts>
-class MediaPlayerCommandAction : public Action<Ts...>, public Parented<MediaPlayer> {
+class MediaPlayerCommandAction final : public Action<Ts...>, public Parented<MediaPlayer> {
  public:
   TEMPLATABLE_VALUE(bool, announcement);
   void play(const Ts &...x) override {
@@ -54,7 +54,7 @@ template<typename... Ts>
 using ClearPlaylistAction = MediaPlayerCommandAction<MediaPlayerCommand::MEDIA_PLAYER_COMMAND_CLEAR_PLAYLIST, Ts...>;
 
 template<MediaPlayerCommand Command, typename... Ts>
-class MediaPlayerMediaAction : public Action<Ts...>, public Parented<MediaPlayer> {
+class MediaPlayerMediaAction final : public Action<Ts...>, public Parented<MediaPlayer> {
   TEMPLATABLE_VALUE(std::string, media_url)
   TEMPLATABLE_VALUE(bool, announcement)
   void play(const Ts &...x) override {
@@ -70,7 +70,7 @@ using PlayMediaAction = MediaPlayerMediaAction<MediaPlayerCommand::MEDIA_PLAYER_
 template<typename... Ts>
 using EnqueueMediaAction = MediaPlayerMediaAction<MediaPlayerCommand::MEDIA_PLAYER_COMMAND_ENQUEUE, Ts...>;
 
-template<typename... Ts> class VolumeSetAction : public Action<Ts...>, public Parented<MediaPlayer> {
+template<typename... Ts> class VolumeSetAction final : public Action<Ts...>, public Parented<MediaPlayer> {
   TEMPLATABLE_VALUE(float, volume)
   void play(const Ts &...x) override { this->parent_->make_call().set_volume(this->volume_.value(x...)).perform(); }
 };
@@ -97,39 +97,39 @@ static_assert(std::is_trivially_copyable_v<StateAnyForwarder>);
 static_assert(sizeof(StateEnterForwarder<MediaPlayerState::MEDIA_PLAYER_STATE_IDLE>) <= sizeof(void *));
 static_assert(std::is_trivially_copyable_v<StateEnterForwarder<MediaPlayerState::MEDIA_PLAYER_STATE_IDLE>>);
 
-template<typename... Ts> class IsIdleCondition : public Condition<Ts...>, public Parented<MediaPlayer> {
+template<typename... Ts> class IsIdleCondition final : public Condition<Ts...>, public Parented<MediaPlayer> {
  public:
   bool check(const Ts &...x) override { return this->parent_->state == MediaPlayerState::MEDIA_PLAYER_STATE_IDLE; }
 };
 
-template<typename... Ts> class IsPlayingCondition : public Condition<Ts...>, public Parented<MediaPlayer> {
+template<typename... Ts> class IsPlayingCondition final : public Condition<Ts...>, public Parented<MediaPlayer> {
  public:
   bool check(const Ts &...x) override { return this->parent_->state == MediaPlayerState::MEDIA_PLAYER_STATE_PLAYING; }
 };
 
-template<typename... Ts> class IsPausedCondition : public Condition<Ts...>, public Parented<MediaPlayer> {
+template<typename... Ts> class IsPausedCondition final : public Condition<Ts...>, public Parented<MediaPlayer> {
  public:
   bool check(const Ts &...x) override { return this->parent_->state == MediaPlayerState::MEDIA_PLAYER_STATE_PAUSED; }
 };
 
-template<typename... Ts> class IsAnnouncingCondition : public Condition<Ts...>, public Parented<MediaPlayer> {
+template<typename... Ts> class IsAnnouncingCondition final : public Condition<Ts...>, public Parented<MediaPlayer> {
  public:
   bool check(const Ts &...x) override {
     return this->parent_->state == MediaPlayerState::MEDIA_PLAYER_STATE_ANNOUNCING;
   }
 };
 
-template<typename... Ts> class IsOnCondition : public Condition<Ts...>, public Parented<MediaPlayer> {
+template<typename... Ts> class IsOnCondition final : public Condition<Ts...>, public Parented<MediaPlayer> {
  public:
   bool check(const Ts &...x) override { return this->parent_->state == MediaPlayerState::MEDIA_PLAYER_STATE_ON; }
 };
 
-template<typename... Ts> class IsOffCondition : public Condition<Ts...>, public Parented<MediaPlayer> {
+template<typename... Ts> class IsOffCondition final : public Condition<Ts...>, public Parented<MediaPlayer> {
  public:
   bool check(const Ts &...x) override { return this->parent_->state == MediaPlayerState::MEDIA_PLAYER_STATE_OFF; }
 };
 
-template<typename... Ts> class IsMutedCondition : public Condition<Ts...>, public Parented<MediaPlayer> {
+template<typename... Ts> class IsMutedCondition final : public Condition<Ts...>, public Parented<MediaPlayer> {
  public:
   bool check(const Ts &...x) override { return this->parent_->is_muted(); }
 };
diff --git a/esphome/components/mhz19/mhz19.h b/esphome/components/mhz19/mhz19.h
index e577b98537..3cef3a3930 100644
--- a/esphome/components/mhz19/mhz19.h
+++ b/esphome/components/mhz19/mhz19.h
@@ -20,7 +20,7 @@ enum MHZ19DetectionRange {
   MHZ19_DETECTION_RANGE_0_10000PPM,
 };
 
-class MHZ19Component : public PollingComponent, public uart::UARTDevice {
+class MHZ19Component final : public PollingComponent, public uart::UARTDevice {
  public:
   void setup() override;
   void update() override;
@@ -49,22 +49,23 @@ class MHZ19Component : public PollingComponent, public uart::UARTDevice {
   MHZ19DetectionRange detection_range_{MHZ19_DETECTION_RANGE_DEFAULT};
 };
 
-template<typename... Ts> class MHZ19CalibrateZeroAction : public Action<Ts...>, public Parented<MHZ19Component> {
+template<typename... Ts> class MHZ19CalibrateZeroAction final : public Action<Ts...>, public Parented<MHZ19Component> {
  public:
   void play(const Ts &...x) override { this->parent_->calibrate_zero(); }
 };
 
-template<typename... Ts> class MHZ19ABCEnableAction : public Action<Ts...>, public Parented<MHZ19Component> {
+template<typename... Ts> class MHZ19ABCEnableAction final : public Action<Ts...>, public Parented<MHZ19Component> {
  public:
   void play(const Ts &...x) override { this->parent_->abc_enable(); }
 };
 
-template<typename... Ts> class MHZ19ABCDisableAction : public Action<Ts...>, public Parented<MHZ19Component> {
+template<typename... Ts> class MHZ19ABCDisableAction final : public Action<Ts...>, public Parented<MHZ19Component> {
  public:
   void play(const Ts &...x) override { this->parent_->abc_disable(); }
 };
 
-template<typename... Ts> class MHZ19DetectionRangeSetAction : public Action<Ts...>, public Parented<MHZ19Component> {
+template<typename... Ts>
+class MHZ19DetectionRangeSetAction final : public Action<Ts...>, public Parented<MHZ19Component> {
  public:
   TEMPLATABLE_VALUE(MHZ19DetectionRange, detection_range)
 
diff --git a/esphome/components/micronova/button/micronova_button.h b/esphome/components/micronova/button/micronova_button.h
index 0258dbb53c..9f8f66ee02 100644
--- a/esphome/components/micronova/button/micronova_button.h
+++ b/esphome/components/micronova/button/micronova_button.h
@@ -6,7 +6,7 @@
 
 namespace esphome::micronova {
 
-class MicroNovaButton : public Component, public button::Button, public MicroNovaBaseListener {
+class MicroNovaButton final : public Component, public button::Button, public MicroNovaBaseListener {
  public:
   MicroNovaButton(MicroNova *m) : MicroNovaBaseListener(m) {}
   void dump_config() override;
diff --git a/esphome/components/micronova/micronova.h b/esphome/components/micronova/micronova.h
index 58cca30b83..c57286db6c 100644
--- a/esphome/components/micronova/micronova.h
+++ b/esphome/components/micronova/micronova.h
@@ -58,7 +58,7 @@ class MicroNovaListener : public MicroNovaBaseListener, public PollingComponent
 
 /////////////////////////////////////////////////////////////////////
 // Main component class
-class MicroNova : public Component, public uart::UARTDevice {
+class MicroNova final : public Component, public uart::UARTDevice {
  public:
   MicroNova(GPIOPin *enable_rx_pin) : enable_rx_pin_(enable_rx_pin) {}
 
diff --git a/esphome/components/micronova/number/micronova_number.h b/esphome/components/micronova/number/micronova_number.h
index 73666b632b..91e4253b46 100644
--- a/esphome/components/micronova/number/micronova_number.h
+++ b/esphome/components/micronova/number/micronova_number.h
@@ -5,7 +5,7 @@
 
 namespace esphome::micronova {
 
-class MicroNovaNumber : public number::Number, public MicroNovaListener {
+class MicroNovaNumber final : public number::Number, public MicroNovaListener {
  public:
   MicroNovaNumber(MicroNova *m) : MicroNovaListener(m) {}
   void dump_config() override;
diff --git a/esphome/components/micronova/sensor/micronova_sensor.h b/esphome/components/micronova/sensor/micronova_sensor.h
index f3b06d140e..8263ad0948 100644
--- a/esphome/components/micronova/sensor/micronova_sensor.h
+++ b/esphome/components/micronova/sensor/micronova_sensor.h
@@ -5,7 +5,7 @@
 
 namespace esphome::micronova {
 
-class MicroNovaSensor : public sensor::Sensor, public MicroNovaListener {
+class MicroNovaSensor final : public sensor::Sensor, public MicroNovaListener {
  public:
   MicroNovaSensor(MicroNova *m) : MicroNovaListener(m) {}
   void dump_config() override;
diff --git a/esphome/components/micronova/switch/micronova_switch.h b/esphome/components/micronova/switch/micronova_switch.h
index fee3c73976..4a4d5eb721 100644
--- a/esphome/components/micronova/switch/micronova_switch.h
+++ b/esphome/components/micronova/switch/micronova_switch.h
@@ -6,7 +6,7 @@
 
 namespace esphome::micronova {
 
-class MicroNovaSwitch : public switch_::Switch, public MicroNovaListener {
+class MicroNovaSwitch final : public switch_::Switch, public MicroNovaListener {
  public:
   MicroNovaSwitch(MicroNova *m) : MicroNovaListener(m) {}
   void dump_config() override;
diff --git a/esphome/components/micronova/text_sensor/micronova_text_sensor.h b/esphome/components/micronova/text_sensor/micronova_text_sensor.h
index 6918a372e8..2de93404a5 100644
--- a/esphome/components/micronova/text_sensor/micronova_text_sensor.h
+++ b/esphome/components/micronova/text_sensor/micronova_text_sensor.h
@@ -17,7 +17,7 @@ static const char *const STOVE_STATES[11] = {"Off",
                                              "No ignition alarm",
                                              "Undefined alarm"};
 
-class MicroNovaTextSensor : public text_sensor::TextSensor, public MicroNovaListener {
+class MicroNovaTextSensor final : public text_sensor::TextSensor, public MicroNovaListener {
  public:
   MicroNovaTextSensor(MicroNova *m) : MicroNovaListener(m) {}
   void dump_config() override;