diff --git a/esphome/components/adc/adc_sensor.h b/esphome/components/adc/adc_sensor.h
index 9ffb6cf856..28dfd2262c 100644
--- a/esphome/components/adc/adc_sensor.h
+++ b/esphome/components/adc/adc_sensor.h
@@ -15,8 +15,7 @@ namespace adc {
 
 #ifdef USE_ESP32
 // clang-format off
-#if (ESP_IDF_VERSION_MAJOR == 4 && ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(4, 4, 7)) || \
-    (ESP_IDF_VERSION_MAJOR == 5 && \
+#if (ESP_IDF_VERSION_MAJOR == 5 && \
      ((ESP_IDF_VERSION_MINOR == 0 && ESP_IDF_VERSION_PATCH >= 5) || \
       (ESP_IDF_VERSION_MINOR == 1 && ESP_IDF_VERSION_PATCH >= 3) || \
       (ESP_IDF_VERSION_MINOR >= 2)) \
@@ -100,11 +99,7 @@ class ADCSensor : public sensor::Sensor, public PollingComponent, public voltage
   adc1_channel_t channel1_{ADC1_CHANNEL_MAX};
   adc2_channel_t channel2_{ADC2_CHANNEL_MAX};
   bool autorange_{false};
-#if ESP_IDF_VERSION_MAJOR >= 5
   esp_adc_cal_characteristics_t cal_characteristics_[SOC_ADC_ATTEN_NUM] = {};
-#else
-  esp_adc_cal_characteristics_t cal_characteristics_[ADC_ATTEN_MAX] = {};
-#endif  // ESP_IDF_VERSION_MAJOR
 #endif  // USE_ESP32
 };
 
diff --git a/esphome/components/esp32/__init__.py b/esphome/components/esp32/__init__.py
index 32323b7504..b4c7a4e05b 100644
--- a/esphome/components/esp32/__init__.py
+++ b/esphome/components/esp32/__init__.py
@@ -411,8 +411,8 @@ def _esp_idf_check_versions(value):
         version = cv.Version.parse(cv.version_number(value[CONF_VERSION]))
         source = value.get(CONF_SOURCE, None)
 
-    if version < cv.Version(4, 0, 0):
-        raise cv.Invalid("Only ESP-IDF 4.0+ is supported.")
+    if version < cv.Version(5, 0, 0):
+        raise cv.Invalid("Only ESP-IDF 5.0+ is supported.")
 
     # flag this for later *before* we set value[CONF_PLATFORM_VERSION] below
     has_platform_ver = CONF_PLATFORM_VERSION in value
@@ -422,20 +422,15 @@ def _esp_idf_check_versions(value):
     )
 
     if (
-        (is_platformio := _platform_is_platformio(value[CONF_PLATFORM_VERSION]))
-        and version.major >= 5
-        and version not in SUPPORTED_PLATFORMIO_ESP_IDF_5X
-    ):
+        is_platformio := _platform_is_platformio(value[CONF_PLATFORM_VERSION])
+    ) and version not in SUPPORTED_PLATFORMIO_ESP_IDF_5X:
         raise cv.Invalid(
             f"ESP-IDF {str(version)} not supported by platformio/espressif32"
         )
 
     if (
-        version.major < 5
-        or (
-            version in SUPPORTED_PLATFORMIO_ESP_IDF_5X
-            and version not in SUPPORTED_PIOARDUINO_ESP_IDF_5X
-        )
+        version in SUPPORTED_PLATFORMIO_ESP_IDF_5X
+        and version not in SUPPORTED_PIOARDUINO_ESP_IDF_5X
     ) and not has_platform_ver:
         raise cv.Invalid(
             f"ESP-IDF {value[CONF_VERSION]} may be supported by platformio/espressif32; please specify '{CONF_PLATFORM_VERSION}'"
@@ -801,14 +796,9 @@ async def to_code(config):
 
         if advanced.get(CONF_IGNORE_EFUSE_MAC_CRC):
             add_idf_sdkconfig_option("CONFIG_ESP_MAC_IGNORE_MAC_CRC_ERROR", True)
-            if (framework_ver.major, framework_ver.minor) >= (4, 4):
-                add_idf_sdkconfig_option(
-                    "CONFIG_ESP_PHY_CALIBRATION_AND_DATA_STORAGE", False
-                )
-            else:
-                add_idf_sdkconfig_option(
-                    "CONFIG_ESP32_PHY_CALIBRATION_AND_DATA_STORAGE", False
-                )
+            add_idf_sdkconfig_option(
+                "CONFIG_ESP_PHY_CALIBRATION_AND_DATA_STORAGE", False
+            )
         if advanced.get(CONF_ENABLE_IDF_EXPERIMENTAL_FEATURES):
             _LOGGER.warning(
                 "Using experimental features in ESP-IDF may result in unexpected failures."
diff --git a/esphome/components/esp32/core.cpp b/esphome/components/esp32/core.cpp
index 562bcba3c2..f3bdfea2a0 100644
--- a/esphome/components/esp32/core.cpp
+++ b/esphome/components/esp32/core.cpp
@@ -56,11 +56,7 @@ void arch_init() {
 void IRAM_ATTR HOT arch_feed_wdt() { esp_task_wdt_reset(); }
 
 uint8_t progmem_read_byte(const uint8_t *addr) { return *addr; }
-#if ESP_IDF_VERSION_MAJOR >= 5
 uint32_t arch_get_cpu_cycle_count() { return esp_cpu_get_cycle_count(); }
-#else
-uint32_t arch_get_cpu_cycle_count() { return cpu_hal_get_cycle_count(); }
-#endif
 uint32_t arch_get_cpu_freq_hz() {
   uint32_t freq = 0;
 #ifdef USE_ESP_IDF
diff --git a/esphome/components/esp32_ble_tracker/__init__.py b/esphome/components/esp32_ble_tracker/__init__.py
index 2242d709a4..547cf84ed1 100644
--- a/esphome/components/esp32_ble_tracker/__init__.py
+++ b/esphome/components/esp32_ble_tracker/__init__.py
@@ -29,8 +29,6 @@ from esphome.const import (
     CONF_ON_BLE_SERVICE_DATA_ADVERTISE,
     CONF_SERVICE_UUID,
     CONF_TRIGGER_ID,
-    KEY_CORE,
-    KEY_FRAMEWORK_VERSION,
 )
 from esphome.core import CORE
 
@@ -323,10 +321,7 @@ async def to_code(config):
         # https://github.com/espressif/esp-idf/issues/2503
         # Match arduino CONFIG_BTU_TASK_STACK_SIZE
         # https://github.com/espressif/arduino-esp32/blob/fd72cf46ad6fc1a6de99c1d83ba8eba17d80a4ee/tools/sdk/esp32/sdkconfig#L1866
-        if CORE.data[KEY_CORE][KEY_FRAMEWORK_VERSION] >= cv.Version(4, 4, 6):
-            add_idf_sdkconfig_option("CONFIG_BT_BTU_TASK_STACK_SIZE", 8192)
-        else:
-            add_idf_sdkconfig_option("CONFIG_BTU_TASK_STACK_SIZE", 8192)
+        add_idf_sdkconfig_option("CONFIG_BT_BTU_TASK_STACK_SIZE", 8192)
         add_idf_sdkconfig_option("CONFIG_BT_ACL_CONNECTIONS", 9)
         add_idf_sdkconfig_option(
             "CONFIG_BTDM_CTRL_BLE_MAX_CONN", config[CONF_MAX_CONNECTIONS]
@@ -335,8 +330,7 @@ async def to_code(config):
         # max notifications in 5.x, setting CONFIG_BT_ACL_CONNECTIONS
         # is enough in 4.x
         # https://github.com/esphome/issues/issues/6808
-        if CORE.data[KEY_CORE][KEY_FRAMEWORK_VERSION] >= cv.Version(5, 0, 0):
-            add_idf_sdkconfig_option("CONFIG_BT_GATTC_NOTIF_REG_MAX", 9)
+        add_idf_sdkconfig_option("CONFIG_BT_GATTC_NOTIF_REG_MAX", 9)
 
     cg.add_define("USE_OTA_STATE_CALLBACK")  # To be notified when an OTA update starts
     cg.add_define("USE_ESP32_BLE_CLIENT")
diff --git a/esphome/components/ethernet/esp_eth_phy_jl1101.c b/esphome/components/ethernet/esp_eth_phy_jl1101.c
index de2a6f4f35..4f31e0a9fd 100644
--- a/esphome/components/ethernet/esp_eth_phy_jl1101.c
+++ b/esphome/components/ethernet/esp_eth_phy_jl1101.c
@@ -19,11 +19,7 @@
 #include <sys/cdefs.h>
 #include "esp_log.h"
 #include "esp_eth.h"
-#if ESP_IDF_VERSION_MAJOR >= 5
 #include "esp_eth_phy_802_3.h"
-#else
-#include "eth_phy_regs_struct.h"
-#endif
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
 #include "driver/gpio.h"
@@ -174,11 +170,7 @@ static esp_err_t jl1101_reset_hw(esp_eth_phy_t *phy) {
   return ESP_OK;
 }
 
-#if ESP_IDF_VERSION_MAJOR >= 5
 static esp_err_t jl1101_negotiate(esp_eth_phy_t *phy, eth_phy_autoneg_cmd_t cmd, bool *nego_state) {
-#else
-static esp_err_t jl1101_negotiate(esp_eth_phy_t *phy) {
-#endif
   phy_jl1101_t *jl1101 = __containerof(phy, phy_jl1101_t, parent);
   esp_eth_mediator_t *eth = jl1101->eth;
   /* in case any link status has changed, let's assume we're in link down status */
@@ -293,11 +285,7 @@ static esp_err_t jl1101_init(esp_eth_phy_t *phy) {
   esp_eth_mediator_t *eth = jl1101->eth;
   // Detect PHY address
   if (jl1101->addr == ESP_ETH_PHY_ADDR_AUTO) {
-#if ESP_IDF_VERSION_MAJOR >= 5
     PHY_CHECK(esp_eth_phy_802_3_detect_phy_addr(eth, &jl1101->addr) == ESP_OK, "Detect PHY address failed", err);
-#else
-    PHY_CHECK(esp_eth_detect_phy_addr(eth, &jl1101->addr) == ESP_OK, "Detect PHY address failed", err);
-#endif
   }
   /* Power on Ethernet PHY */
   PHY_CHECK(jl1101_pwrctl(phy, true) == ESP_OK, "power control failed", err);
@@ -336,11 +324,7 @@ esp_eth_phy_t *esp_eth_phy_new_jl1101(const eth_phy_config_t *config) {
   jl1101->parent.init = jl1101_init;
   jl1101->parent.deinit = jl1101_deinit;
   jl1101->parent.set_mediator = jl1101_set_mediator;
-#if ESP_IDF_VERSION_MAJOR >= 5
   jl1101->parent.autonego_ctrl = jl1101_negotiate;
-#else
-  jl1101->parent.negotiate = jl1101_negotiate;
-#endif
   jl1101->parent.get_link = jl1101_get_link;
   jl1101->parent.pwrctl = jl1101_pwrctl;
   jl1101->parent.get_addr = jl1101_get_addr;
diff --git a/esphome/components/ethernet/ethernet_component.cpp b/esphome/components/ethernet/ethernet_component.cpp
index 19a11c6945..f8c2f3a72e 100644
--- a/esphome/components/ethernet/ethernet_component.cpp
+++ b/esphome/components/ethernet/ethernet_component.cpp
@@ -122,25 +122,12 @@ void EthernetComponent::setup() {
       .post_cb = nullptr,
   };
 
-#if ESP_IDF_VERSION_MAJOR >= 5
 #if CONFIG_ETH_SPI_ETHERNET_W5500
   eth_w5500_config_t w5500_config = ETH_W5500_DEFAULT_CONFIG(host, &devcfg);
 #endif
 #if CONFIG_ETH_SPI_ETHERNET_DM9051
   eth_dm9051_config_t dm9051_config = ETH_DM9051_DEFAULT_CONFIG(host, &devcfg);
 #endif
-#else
-  spi_device_handle_t spi_handle = nullptr;
-  err = spi_bus_add_device(host, &devcfg, &spi_handle);
-  ESPHL_ERROR_CHECK(err, "SPI bus add device error");
-
-#if CONFIG_ETH_SPI_ETHERNET_W5500
-  eth_w5500_config_t w5500_config = ETH_W5500_DEFAULT_CONFIG(spi_handle);
-#endif
-#if CONFIG_ETH_SPI_ETHERNET_DM9051
-  eth_dm9051_config_t dm9051_config = ETH_DM9051_DEFAULT_CONFIG(spi_handle);
-#endif
-#endif  // ESP_IDF_VERSION_MAJOR >= 5
 
 #if CONFIG_ETH_SPI_ETHERNET_W5500
   w5500_config.int_gpio_num = this->interrupt_pin_;
@@ -211,11 +198,7 @@ void EthernetComponent::setup() {
     }
     case ETHERNET_TYPE_KSZ8081:
     case ETHERNET_TYPE_KSZ8081RNA: {
-#if ESP_IDF_VERSION_MAJOR >= 5
       this->phy_ = esp_eth_phy_new_ksz80xx(&phy_config);
-#else
-      this->phy_ = esp_eth_phy_new_ksz8081(&phy_config);
-#endif
       break;
     }
 #endif
diff --git a/esphome/components/i2s_audio/__init__.py b/esphome/components/i2s_audio/__init__.py
index ef95fd0b41..9a2aa0362f 100644
--- a/esphome/components/i2s_audio/__init__.py
+++ b/esphome/components/i2s_audio/__init__.py
@@ -9,14 +9,7 @@ from esphome.components.esp32.const import (
     VARIANT_ESP32S3,
 )
 import esphome.config_validation as cv
-from esphome.const import (
-    CONF_BITS_PER_SAMPLE,
-    CONF_CHANNEL,
-    CONF_ID,
-    CONF_SAMPLE_RATE,
-    KEY_CORE,
-    KEY_FRAMEWORK_VERSION,
-)
+from esphome.const import CONF_BITS_PER_SAMPLE, CONF_CHANNEL, CONF_ID, CONF_SAMPLE_RATE
 from esphome.core import CORE
 from esphome.cpp_generator import MockObjClass
 import esphome.final_validate as fv
@@ -250,8 +243,7 @@ def _final_validate(_):
 
 
 def use_legacy():
-    framework_version = CORE.data[KEY_CORE][KEY_FRAMEWORK_VERSION]
-    if CORE.using_esp_idf and framework_version >= cv.Version(5, 0, 0):
+    if CORE.using_esp_idf:
         if not _use_legacy_driver:
             return False
     return True
diff --git a/esphome/components/i2s_audio/i2s_audio.cpp b/esphome/components/i2s_audio/i2s_audio.cpp
index 7ff21bba57..7f233516e6 100644
--- a/esphome/components/i2s_audio/i2s_audio.cpp
+++ b/esphome/components/i2s_audio/i2s_audio.cpp
@@ -9,15 +9,11 @@ namespace i2s_audio {
 
 static const char *const TAG = "i2s_audio";
 
-#if ESP_IDF_VERSION_MAJOR >= 5
-static const uint8_t I2S_NUM_MAX = SOC_I2S_NUM;  // because IDF 5+ took this away :(
-#endif
-
 void I2SAudioComponent::setup() {
   ESP_LOGCONFIG(TAG, "Running setup");
 
   static i2s_port_t next_port_num = I2S_NUM_0;
-  if (next_port_num >= I2S_NUM_MAX) {
+  if (next_port_num >= SOC_I2S_NUM) {
     ESP_LOGE(TAG, "Too many components");
     this->mark_failed();
     return;
diff --git a/esphome/components/improv_serial/improv_serial_component.cpp b/esphome/components/improv_serial/improv_serial_component.cpp
index c3a0f2eacc..ae4927828b 100644
--- a/esphome/components/improv_serial/improv_serial_component.cpp
+++ b/esphome/components/improv_serial/improv_serial_component.cpp
@@ -59,11 +59,7 @@ optional<uint8_t> ImprovSerialComponent::read_byte_() {
       break;
 #if defined(USE_LOGGER_USB_CDC) && defined(CONFIG_ESP_CONSOLE_USB_CDC)
     case logger::UART_SELECTION_USB_CDC:
-#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0)
       if (esp_usb_console_available_for_read()) {
-#else
-      if (esp_usb_console_read_available()) {
-#endif
         esp_usb_console_read_buf((char *) &data, 1);
         byte = data;
       }
diff --git a/esphome/components/internal_temperature/internal_temperature.cpp b/esphome/components/internal_temperature/internal_temperature.cpp
index f503927d8e..85844647f2 100644
--- a/esphome/components/internal_temperature/internal_temperature.cpp
+++ b/esphome/components/internal_temperature/internal_temperature.cpp
@@ -10,11 +10,7 @@ uint8_t temprature_sens_read();
 #elif defined(USE_ESP32_VARIANT_ESP32C3) || defined(USE_ESP32_VARIANT_ESP32C6) || \
     defined(USE_ESP32_VARIANT_ESP32S2) || defined(USE_ESP32_VARIANT_ESP32S3) || defined(USE_ESP32_VARIANT_ESP32H2) || \
     defined(USE_ESP32_VARIANT_ESP32C2) || defined(USE_ESP32_VARIANT_ESP32P4)
-#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
-#include "driver/temp_sensor.h"
-#else
 #include "driver/temperature_sensor.h"
-#endif  // ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
 #endif  // USE_ESP32_VARIANT
 #endif  // USE_ESP32
 #ifdef USE_RP2040
@@ -31,12 +27,11 @@ namespace internal_temperature {
 
 static const char *const TAG = "internal_temperature";
 #ifdef USE_ESP32
-#if (ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0)) && \
-    (defined(USE_ESP32_VARIANT_ESP32C3) || defined(USE_ESP32_VARIANT_ESP32C6) || defined(USE_ESP32_VARIANT_ESP32S2) || \
-     defined(USE_ESP32_VARIANT_ESP32S3) || defined(USE_ESP32_VARIANT_ESP32H2) || defined(USE_ESP32_VARIANT_ESP32C2) || \
-     defined(USE_ESP32_VARIANT_ESP32P4))
+#if defined(USE_ESP32_VARIANT_ESP32C3) || defined(USE_ESP32_VARIANT_ESP32C6) || defined(USE_ESP32_VARIANT_ESP32S2) || \
+    defined(USE_ESP32_VARIANT_ESP32S3) || defined(USE_ESP32_VARIANT_ESP32H2) || defined(USE_ESP32_VARIANT_ESP32C2) || \
+    defined(USE_ESP32_VARIANT_ESP32P4)
 static temperature_sensor_handle_t tsensNew = NULL;
-#endif  // ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0) && USE_ESP32_VARIANT
+#endif  // USE_ESP32_VARIANT
 #endif  // USE_ESP32
 
 void InternalTemperatureSensor::update() {
@@ -51,24 +46,11 @@ void InternalTemperatureSensor::update() {
 #elif defined(USE_ESP32_VARIANT_ESP32C3) || defined(USE_ESP32_VARIANT_ESP32C6) || \
     defined(USE_ESP32_VARIANT_ESP32S2) || defined(USE_ESP32_VARIANT_ESP32S3) || defined(USE_ESP32_VARIANT_ESP32H2) || \
     defined(USE_ESP32_VARIANT_ESP32C2) || defined(USE_ESP32_VARIANT_ESP32P4)
-#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
-  temp_sensor_config_t tsens = TSENS_CONFIG_DEFAULT();
-  temp_sensor_set_config(tsens);
-  temp_sensor_start();
-#if defined(USE_ESP32_VARIANT_ESP32S3) && (ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(4, 4, 3))
-#error \
-    "ESP32-S3 internal temperature sensor requires ESP IDF V4.4.3 or higher. See https://github.com/esphome/issues/issues/4271"
-#endif
-  esp_err_t result = temp_sensor_read_celsius(&temperature);
-  temp_sensor_stop();
-  success = (result == ESP_OK);
-#else
   esp_err_t result = temperature_sensor_get_celsius(tsensNew, &temperature);
   success = (result == ESP_OK);
   if (!success) {
     ESP_LOGE(TAG, "Reading failed (%d)", result);
   }
-#endif  // ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
 #endif  // USE_ESP32_VARIANT
 #endif  // USE_ESP32
 #ifdef USE_RP2040
@@ -99,10 +81,9 @@ void InternalTemperatureSensor::update() {
 
 void InternalTemperatureSensor::setup() {
 #ifdef USE_ESP32
-#if (ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0)) && \
-    (defined(USE_ESP32_VARIANT_ESP32C3) || defined(USE_ESP32_VARIANT_ESP32C6) || defined(USE_ESP32_VARIANT_ESP32S2) || \
-     defined(USE_ESP32_VARIANT_ESP32S3) || defined(USE_ESP32_VARIANT_ESP32H2) || defined(USE_ESP32_VARIANT_ESP32C2) || \
-     defined(USE_ESP32_VARIANT_ESP32P4))
+#if defined(USE_ESP32_VARIANT_ESP32C3) || defined(USE_ESP32_VARIANT_ESP32C6) || defined(USE_ESP32_VARIANT_ESP32S2) || \
+    defined(USE_ESP32_VARIANT_ESP32S3) || defined(USE_ESP32_VARIANT_ESP32H2) || defined(USE_ESP32_VARIANT_ESP32C2) || \
+    defined(USE_ESP32_VARIANT_ESP32P4)
   ESP_LOGCONFIG(TAG, "Running setup");
 
   temperature_sensor_config_t tsens_config = TEMPERATURE_SENSOR_CONFIG_DEFAULT(-10, 80);
@@ -120,7 +101,7 @@ void InternalTemperatureSensor::setup() {
     this->mark_failed();
     return;
   }
-#endif  // ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0) && USE_ESP32_VARIANT
+#endif  // USE_ESP32_VARIANT
 #endif  // USE_ESP32
 }
 
diff --git a/esphome/components/internal_temperature/sensor.py b/esphome/components/internal_temperature/sensor.py
index 9bfa3739c8..93b98a30f4 100644
--- a/esphome/components/internal_temperature/sensor.py
+++ b/esphome/components/internal_temperature/sensor.py
@@ -1,46 +1,21 @@
 import esphome.codegen as cg
 from esphome.components import sensor
-from esphome.components.esp32 import get_esp32_variant
-from esphome.components.esp32.const import VARIANT_ESP32S3
 import esphome.config_validation as cv
 from esphome.const import (
     DEVICE_CLASS_TEMPERATURE,
     ENTITY_CATEGORY_DIAGNOSTIC,
-    KEY_CORE,
-    KEY_FRAMEWORK_VERSION,
     PLATFORM_BK72XX,
     PLATFORM_ESP32,
     PLATFORM_RP2040,
     STATE_CLASS_MEASUREMENT,
     UNIT_CELSIUS,
 )
-from esphome.core import CORE
 
 internal_temperature_ns = cg.esphome_ns.namespace("internal_temperature")
 InternalTemperatureSensor = internal_temperature_ns.class_(
     "InternalTemperatureSensor", sensor.Sensor, cg.PollingComponent
 )
 
-
-def validate_config(config):
-    if CORE.is_esp32:
-        variant = get_esp32_variant()
-        if variant == VARIANT_ESP32S3:
-            if CORE.using_arduino and CORE.data[KEY_CORE][
-                KEY_FRAMEWORK_VERSION
-            ] < cv.Version(2, 0, 6):
-                raise cv.Invalid(
-                    "ESP32-S3 Internal Temperature Sensor requires framework version 2.0.6 or higher. See <https://github.com/esphome/issues/issues/4271>."
-                )
-            if CORE.using_esp_idf and CORE.data[KEY_CORE][
-                KEY_FRAMEWORK_VERSION
-            ] < cv.Version(4, 4, 3):
-                raise cv.Invalid(
-                    "ESP32-S3 Internal Temperature Sensor requires framework version 4.4.3 or higher. See <https://github.com/esphome/issues/issues/4271>."
-                )
-    return config
-
-
 CONFIG_SCHEMA = cv.All(
     sensor.sensor_schema(
         InternalTemperatureSensor,
@@ -51,7 +26,6 @@ CONFIG_SCHEMA = cv.All(
         entity_category=ENTITY_CATEGORY_DIAGNOSTIC,
     ).extend(cv.polling_component_schema("60s")),
     cv.only_on([PLATFORM_ESP32, PLATFORM_RP2040, PLATFORM_BK72XX]),
-    validate_config,
 )
 
 
diff --git a/esphome/components/logger/logger_esp32.cpp b/esphome/components/logger/logger_esp32.cpp
index b5ac84a665..41445fa3b4 100644
--- a/esphome/components/logger/logger_esp32.cpp
+++ b/esphome/components/logger/logger_esp32.cpp
@@ -83,9 +83,7 @@ void init_uart(uart_port_t uart_num, uint32_t baud_rate, int tx_buffer_size) {
   uart_config.parity = UART_PARITY_DISABLE;
   uart_config.stop_bits = UART_STOP_BITS_1;
   uart_config.flow_ctrl = UART_HW_FLOWCTRL_DISABLE;
-#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0)
   uart_config.source_clk = UART_SCLK_DEFAULT;
-#endif
   uart_param_config(uart_num, &uart_config);
   const int uart_buffer_size = tx_buffer_size;
   // Install UART driver using an event queue here
diff --git a/esphome/components/mdns/__init__.py b/esphome/components/mdns/__init__.py
index 2f81068e8a..ed230d43aa 100644
--- a/esphome/components/mdns/__init__.py
+++ b/esphome/components/mdns/__init__.py
@@ -8,8 +8,6 @@ from esphome.const import (
     CONF_PROTOCOL,
     CONF_SERVICE,
     CONF_SERVICES,
-    KEY_CORE,
-    KEY_FRAMEWORK_VERSION,
 )
 from esphome.core import CORE, coroutine_with_priority
 
@@ -85,9 +83,7 @@ async def to_code(config):
         elif CORE.is_rp2040:
             cg.add_library("LEAmDNS", None)
 
-    if CORE.using_esp_idf and CORE.data[KEY_CORE][KEY_FRAMEWORK_VERSION] >= cv.Version(
-        5, 0, 0
-    ):
+    if CORE.using_esp_idf:
         add_idf_component(name="espressif/mdns", ref="1.8.2")
 
     cg.add_define("USE_MDNS")
diff --git a/esphome/components/mqtt/mqtt_backend_esp32.cpp b/esphome/components/mqtt/mqtt_backend_esp32.cpp
index 4648e66e1d..a096408aa5 100644
--- a/esphome/components/mqtt/mqtt_backend_esp32.cpp
+++ b/esphome/components/mqtt/mqtt_backend_esp32.cpp
@@ -14,49 +14,6 @@ namespace mqtt {
 static const char *const TAG = "mqtt.idf";
 
 bool MQTTBackendESP32::initialize_() {
-#if ESP_IDF_VERSION_MAJOR < 5
-  mqtt_cfg_.user_context = (void *) this;
-  mqtt_cfg_.buffer_size = MQTT_BUFFER_SIZE;
-
-  mqtt_cfg_.host = this->host_.c_str();
-  mqtt_cfg_.port = this->port_;
-  mqtt_cfg_.keepalive = this->keep_alive_;
-  mqtt_cfg_.disable_clean_session = !this->clean_session_;
-
-  if (!this->username_.empty()) {
-    mqtt_cfg_.username = this->username_.c_str();
-    if (!this->password_.empty()) {
-      mqtt_cfg_.password = this->password_.c_str();
-    }
-  }
-
-  if (!this->lwt_topic_.empty()) {
-    mqtt_cfg_.lwt_topic = this->lwt_topic_.c_str();
-    this->mqtt_cfg_.lwt_qos = this->lwt_qos_;
-    this->mqtt_cfg_.lwt_retain = this->lwt_retain_;
-
-    if (!this->lwt_message_.empty()) {
-      mqtt_cfg_.lwt_msg = this->lwt_message_.c_str();
-      mqtt_cfg_.lwt_msg_len = this->lwt_message_.size();
-    }
-  }
-
-  if (!this->client_id_.empty()) {
-    mqtt_cfg_.client_id = this->client_id_.c_str();
-  }
-  if (ca_certificate_.has_value()) {
-    mqtt_cfg_.cert_pem = ca_certificate_.value().c_str();
-    mqtt_cfg_.skip_cert_common_name_check = skip_cert_cn_check_;
-    mqtt_cfg_.transport = MQTT_TRANSPORT_OVER_SSL;
-
-    if (this->cl_certificate_.has_value() && this->cl_key_.has_value()) {
-      mqtt_cfg_.client_cert_pem = this->cl_certificate_.value().c_str();
-      mqtt_cfg_.client_key_pem = this->cl_key_.value().c_str();
-    }
-  } else {
-    mqtt_cfg_.transport = MQTT_TRANSPORT_OVER_TCP;
-  }
-#else
   mqtt_cfg_.broker.address.hostname = this->host_.c_str();
   mqtt_cfg_.broker.address.port = this->port_;
   mqtt_cfg_.session.keepalive = this->keep_alive_;
@@ -95,7 +52,7 @@ bool MQTTBackendESP32::initialize_() {
   } else {
     mqtt_cfg_.broker.address.transport = MQTT_TRANSPORT_OVER_TCP;
   }
-#endif
+
   auto *mqtt_client = esp_mqtt_client_init(&mqtt_cfg_);
   if (mqtt_client) {
     handler_.reset(mqtt_client);
diff --git a/esphome/components/opentherm/opentherm.cpp b/esphome/components/opentherm/opentherm.cpp
index 49482316ee..b2751470b2 100644
--- a/esphome/components/opentherm/opentherm.cpp
+++ b/esphome/components/opentherm/opentherm.cpp
@@ -272,18 +272,13 @@ bool OpenTherm::init_esp32_timer_() {
   this->timer_idx_ = timer_idx;
 
   timer_config_t const config = {
-    .alarm_en = TIMER_ALARM_EN,
-    .counter_en = TIMER_PAUSE,
-    .intr_type = TIMER_INTR_LEVEL,
-    .counter_dir = TIMER_COUNT_UP,
-    .auto_reload = TIMER_AUTORELOAD_EN,
-#if ESP_IDF_VERSION_MAJOR >= 5
-    .clk_src = TIMER_SRC_CLK_DEFAULT,
-#endif
-    .divider = 80,
-#if defined(SOC_TIMER_GROUP_SUPPORT_XTAL) && ESP_IDF_VERSION_MAJOR < 5
-    .clk_src = TIMER_SRC_CLK_APB
-#endif
+      .alarm_en = TIMER_ALARM_EN,
+      .counter_en = TIMER_PAUSE,
+      .intr_type = TIMER_INTR_LEVEL,
+      .counter_dir = TIMER_COUNT_UP,
+      .auto_reload = TIMER_AUTORELOAD_EN,
+      .clk_src = TIMER_SRC_CLK_DEFAULT,
+      .divider = 80,
   };
 
   esp_err_t result;
diff --git a/esphome/components/ota/ota_backend_esp_idf.cpp b/esphome/components/ota/ota_backend_esp_idf.cpp
index 6f45fb75e4..cad44a5795 100644
--- a/esphome/components/ota/ota_backend_esp_idf.cpp
+++ b/esphome/components/ota/ota_backend_esp_idf.cpp
@@ -6,10 +6,7 @@
 
 #include <esp_ota_ops.h>
 #include <esp_task_wdt.h>
-
-#if ESP_IDF_VERSION_MAJOR >= 5
 #include <spi_flash_mmap.h>
-#endif
 
 namespace esphome {
 namespace ota {
@@ -24,7 +21,6 @@ OTAResponseTypes IDFOTABackend::begin(size_t image_size) {
 
 #if CONFIG_ESP_TASK_WDT_TIMEOUT_S < 15
   // The following function takes longer than the 5 seconds timeout of WDT
-#if ESP_IDF_VERSION_MAJOR >= 5
   esp_task_wdt_config_t wdtc;
   wdtc.idle_core_mask = 0;
 #if CONFIG_ESP_TASK_WDT_CHECK_IDLE_TASK_CPU0
@@ -36,21 +32,14 @@ OTAResponseTypes IDFOTABackend::begin(size_t image_size) {
   wdtc.timeout_ms = 15000;
   wdtc.trigger_panic = false;
   esp_task_wdt_reconfigure(&wdtc);
-#else
-  esp_task_wdt_init(15, false);
-#endif
 #endif
 
   esp_err_t err = esp_ota_begin(this->partition_, image_size, &this->update_handle_);
 
 #if CONFIG_ESP_TASK_WDT_TIMEOUT_S < 15
   // Set the WDT back to the configured timeout
-#if ESP_IDF_VERSION_MAJOR >= 5
   wdtc.timeout_ms = CONFIG_ESP_TASK_WDT_TIMEOUT_S * 1000;
   esp_task_wdt_reconfigure(&wdtc);
-#else
-  esp_task_wdt_init(CONFIG_ESP_TASK_WDT_TIMEOUT_S, false);
-#endif
 #endif
 
   if (err != ESP_OK) {
diff --git a/esphome/components/psram/psram.cpp b/esphome/components/psram/psram.cpp
index 162543545e..6c110a577d 100644
--- a/esphome/components/psram/psram.cpp
+++ b/esphome/components/psram/psram.cpp
@@ -2,9 +2,7 @@
 #ifdef USE_ESP32
 #include "psram.h"
 #include <esp_idf_version.h>
-#if defined(USE_ESP_IDF) && ESP_IDF_VERSION_MAJOR >= 5
 #include <esp_psram.h>
-#endif  // USE_ESP_IDF
 
 #include "esphome/core/log.h"
 
@@ -16,7 +14,6 @@ static const char *const TAG = "psram";
 
 void PsramComponent::dump_config() {
   ESP_LOGCONFIG(TAG, "PSRAM:");
-#if defined(USE_ESP_IDF) && ESP_IDF_VERSION_MAJOR >= 5
   bool available = esp_psram_is_initialized();
 
   ESP_LOGCONFIG(TAG, "  Available: %s", YESNO(available));
@@ -26,23 +23,6 @@ void PsramComponent::dump_config() {
     ESP_LOGCONFIG(TAG, "  ECC enabled: YES");
 #endif
   }
-#else
-  // Technically this can be false if the PSRAM is full, but heap_caps_get_total_size() isn't always available, and it's
-  // very unlikely for the PSRAM to be full.
-  bool available = heap_caps_get_free_size(MALLOC_CAP_SPIRAM) > 0;
-  ESP_LOGCONFIG(TAG, "  Available: %s", YESNO(available));
-
-  if (available) {
-    const size_t psram_total_size_bytes = heap_caps_get_total_size(MALLOC_CAP_SPIRAM);
-    const float psram_total_size_kb = psram_total_size_bytes / 1024.0f;
-
-    if (abs(std::round(psram_total_size_kb) - psram_total_size_kb) < 0.05f) {
-      ESP_LOGCONFIG(TAG, "  Size: %.0f KB", psram_total_size_kb);
-    } else {
-      ESP_LOGCONFIG(TAG, "  Size: %zu bytes", psram_total_size_bytes);
-    }
-  }
-#endif  // USE_ESP_IDF
 }
 
 }  // namespace psram
diff --git a/esphome/components/pvvx_mithermometer/display/pvvx_display.cpp b/esphome/components/pvvx_mithermometer/display/pvvx_display.cpp
index 74f63a9640..4b6c11b332 100644
--- a/esphome/components/pvvx_mithermometer/display/pvvx_display.cpp
+++ b/esphome/components/pvvx_mithermometer/display/pvvx_display.cpp
@@ -146,11 +146,7 @@ void PVVXDisplay::sync_time_() {
   }
   time.recalc_timestamp_utc(true);  // calculate timestamp of local time
   uint8_t blk[5] = {};
-#if ESP_IDF_VERSION_MAJOR >= 5
   ESP_LOGD(TAG, "[%s] Sync time with timestamp %" PRIu64 ".", this->parent_->address_str().c_str(), time.timestamp);
-#else
-  ESP_LOGD(TAG, "[%s] Sync time with timestamp %lu.", this->parent_->address_str().c_str(), time.timestamp);
-#endif
   blk[0] = 0x23;
   blk[1] = time.timestamp & 0xff;
   blk[2] = (time.timestamp >> 8) & 0xff;
diff --git a/esphome/components/rpi_dpi_rgb/rpi_dpi_rgb.cpp b/esphome/components/rpi_dpi_rgb/rpi_dpi_rgb.cpp
index 666bac354d..91eb947a3e 100644
--- a/esphome/components/rpi_dpi_rgb/rpi_dpi_rgb.cpp
+++ b/esphome/components/rpi_dpi_rgb/rpi_dpi_rgb.cpp
@@ -10,10 +10,8 @@ void RpiDpiRgb::setup() {
   this->reset_display_();
   esp_lcd_rgb_panel_config_t config{};
   config.flags.fb_in_psram = 1;
-#if ESP_IDF_VERSION_MAJOR >= 5
   config.bounce_buffer_size_px = this->width_ * 10;
   config.num_fbs = 1;
-#endif  // ESP_IDF_VERSION_MAJOR
   config.timings.h_res = this->width_;
   config.timings.v_res = this->height_;
   config.timings.hsync_pulse_width = this->hsync_pulse_width_;
@@ -47,10 +45,8 @@ void RpiDpiRgb::setup() {
   ESP_LOGCONFIG(TAG, "RPI_DPI_RGB setup complete");
 }
 void RpiDpiRgb::loop() {
-#if ESP_IDF_VERSION_MAJOR >= 5
   if (this->handle_ != nullptr)
     esp_lcd_rgb_panel_restart(this->handle_);
-#endif  // ESP_IDF_VERSION_MAJOR
 }
 
 void RpiDpiRgb::draw_pixels_at(int x_start, int y_start, int w, int h, const uint8_t *ptr, display::ColorOrder order,
diff --git a/esphome/components/st7701s/st7701s.cpp b/esphome/components/st7701s/st7701s.cpp
index 6261f33b77..46509a7f9f 100644
--- a/esphome/components/st7701s/st7701s.cpp
+++ b/esphome/components/st7701s/st7701s.cpp
@@ -12,10 +12,8 @@ void ST7701S::setup() {
 
   esp_lcd_rgb_panel_config_t config{};
   config.flags.fb_in_psram = 1;
-#if ESP_IDF_VERSION_MAJOR >= 5
   config.bounce_buffer_size_px = this->width_ * 10;
   config.num_fbs = 1;
-#endif  // ESP_IDF_VERSION_MAJOR
   config.timings.h_res = this->width_;
   config.timings.v_res = this->height_;
   config.timings.hsync_pulse_width = this->hsync_pulse_width_;
@@ -48,10 +46,8 @@ void ST7701S::setup() {
 }
 
 void ST7701S::loop() {
-#if ESP_IDF_VERSION_MAJOR >= 5
   if (this->handle_ != nullptr)
     esp_lcd_rgb_panel_restart(this->handle_);
-#endif  // ESP_IDF_VERSION_MAJOR
 }
 
 void ST7701S::draw_pixels_at(int x_start, int y_start, int w, int h, const uint8_t *ptr, display::ColorOrder order,
diff --git a/esphome/components/uart/uart_component_esp_idf.cpp b/esphome/components/uart/uart_component_esp_idf.cpp
index 8fae63a603..63b2579c3f 100644
--- a/esphome/components/uart/uart_component_esp_idf.cpp
+++ b/esphome/components/uart/uart_component_esp_idf.cpp
@@ -48,11 +48,7 @@ uart_config_t IDFUARTComponent::get_config_() {
   uart_config.parity = parity;
   uart_config.stop_bits = this->stop_bits_ == 1 ? UART_STOP_BITS_1 : UART_STOP_BITS_2;
   uart_config.flow_ctrl = UART_HW_FLOWCTRL_DISABLE;
-#if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 0, 0)
   uart_config.source_clk = UART_SCLK_DEFAULT;
-#else
-  uart_config.source_clk = UART_SCLK_APB;
-#endif
   uart_config.rx_flow_ctrl_thresh = 122;
 
   return uart_config;
diff --git a/esphome/components/watchdog/watchdog.cpp b/esphome/components/watchdog/watchdog.cpp
index f6f2992a11..2ce46756e4 100644
--- a/esphome/components/watchdog/watchdog.cpp
+++ b/esphome/components/watchdog/watchdog.cpp
@@ -38,16 +38,12 @@ WatchdogManager::~WatchdogManager() {
 void WatchdogManager::set_timeout_(uint32_t timeout_ms) {
   ESP_LOGV(TAG, "Adjusting WDT to %" PRIu32 "ms", timeout_ms);
 #ifdef USE_ESP32
-#if ESP_IDF_VERSION_MAJOR >= 5
   esp_task_wdt_config_t wdt_config = {
       .timeout_ms = timeout_ms,
       .idle_core_mask = (1 << SOC_CPU_CORES_NUM) - 1,
       .trigger_panic = true,
   };
   esp_task_wdt_reconfigure(&wdt_config);
-#else
-  esp_task_wdt_init(timeout_ms / 1000, true);
-#endif  // ESP_IDF_VERSION_MAJOR
 #endif  // USE_ESP32
 
 #ifdef USE_RP2040
diff --git a/esphome/components/wireguard/__init__.py b/esphome/components/wireguard/__init__.py
index fc0e4e0538..8eff8e7b2a 100644
--- a/esphome/components/wireguard/__init__.py
+++ b/esphome/components/wireguard/__init__.py
@@ -6,14 +6,7 @@ import esphome.codegen as cg
 from esphome.components import time
 from esphome.components.esp32 import CORE, add_idf_sdkconfig_option
 import esphome.config_validation as cv
-from esphome.const import (
-    CONF_ADDRESS,
-    CONF_ID,
-    CONF_REBOOT_TIMEOUT,
-    CONF_TIME_ID,
-    KEY_CORE,
-    KEY_FRAMEWORK_VERSION,
-)
+from esphome.const import CONF_ADDRESS, CONF_ID, CONF_REBOOT_TIMEOUT, CONF_TIME_ID
 from esphome.core import TimePeriod
 
 CONF_NETMASK = "netmask"
@@ -125,9 +118,7 @@ async def to_code(config):
 
     # Workaround for crash on IDF 5+
     # See https://github.com/trombik/esp_wireguard/issues/33#issuecomment-1568503651
-    if CORE.using_esp_idf and CORE.data[KEY_CORE][KEY_FRAMEWORK_VERSION] >= cv.Version(
-        5, 0, 0
-    ):
+    if CORE.using_esp_idf:
         add_idf_sdkconfig_option("CONFIG_LWIP_PPP_SUPPORT", True)
 
     # This flag is added here because the esp_wireguard library statically