diff --git a/esphome/components/kp18058/__init__.py b/esphome/components/kp18058/__init__.py
index 0b74af757b..fce4181b7b 100644
--- a/esphome/components/kp18058/__init__.py
+++ b/esphome/components/kp18058/__init__.py
@@ -19,8 +19,8 @@ CONFIG_SCHEMA = cv.Schema(
         cv.GenerateID(): cv.declare_id(KP18058),
         cv.Required(CONF_DATA_PIN): pins.gpio_output_pin_schema,
         cv.Required(CONF_CLOCK_PIN): pins.gpio_output_pin_schema,
-        cv.Optional(CONF_CW_CURRENT, default=5): cv.int_range(min=0, max=31),
-        cv.Optional(CONF_RGB_CURRENT, default=5): cv.int_range(min=0, max=31),
+        cv.Optional(CONF_CW_CURRENT, default=8): cv.float_range(min=0, max=77.5),
+        cv.Optional(CONF_RGB_CURRENT, default=5): cv.float_range(min=0, max=48),
     }
 ).extend(cv.COMPONENT_SCHEMA)
 
diff --git a/esphome/components/kp18058/kp18058.cpp b/esphome/components/kp18058/kp18058.cpp
index f2a201c561..b181f41c41 100644
--- a/esphome/components/kp18058/kp18058.cpp
+++ b/esphome/components/kp18058/kp18058.cpp
@@ -59,13 +59,13 @@ void KP18058::program_led_driver() {
     return true;
   };
 
-  // Create the settings union
+  // Create the settings struct
   KP18058_Settings settings{};
 
   settings.address_identification = 1;
   settings.working_mode = all_channels_zero() ? STANDBY_MODE : RGBCW_MODE;
   // Set byte address start. valid values are 0 - 13
-  // In this message always all bytes are transmited (starting from 0)
+  // In this message always all bytes are transmitted (starting from 0)
   settings.start_byte_address = 0x00;
 
   // Set Line Compensation Mechanism
@@ -78,7 +78,7 @@ void KP18058::program_led_driver() {
   settings.max_current_out4_5 = static_cast<uint8_t>(max_cw_current_ / 2.5) & 0x1F;
   settings.max_current_out1_3 = static_cast<uint8_t>(max_rgb_current_ / 2.5) & 0x1F;
 
-  // set dimming method for RGB channels and chop dimming frequency
+  // Set dimming method for RGB channels and chop dimming frequency
   settings.chop_dimming_out1_3 = ANALOG_DIMMING;
   settings.chop_dimming_frequency = CD_FREQUENCY_500HZ;
 
@@ -90,23 +90,24 @@ void KP18058::program_led_driver() {
   }
 
   // Calculate parity bits for each byte
-  for (auto &byte : settings.bytes) {
+  uint8_t *settings_bytes = reinterpret_cast<uint8_t *>(&settings);
+  for (auto &byte : settings_bytes) {
     byte |= get_parity_bit(byte);
   }
 
   // Send the I2C message
   i2c_.start();
-  for (int i = 0; i < sizeof(KP18058_Settings); i++) {
-    // on error try to repeat the byte transmission I2C_MAX_RETRY times
+  for (size_t i = 0; i < sizeof(KP18058_Settings); i++) {
+    // On error, try to repeat the byte transmission I2C_MAX_RETRY times
     bool write_succeeded;
     for (int attempt = 0; attempt < I2C_MAX_RETRY; attempt++) {
-      write_succeeded = i2c_.write_byte(settings.bytes[i]);
+      write_succeeded = i2c_.write_byte(settings_bytes[i]);
       if (write_succeeded)
         break;
     }
-    // if all tries failed break and stop sending the rest of the frame bytes
+    // If all tries failed, break and stop sending the rest of the frame bytes
     if (!write_succeeded) {
-      ESP_LOGE(TAG, "Failed to write byte %02d (0x%02X) after %d attempts", i, settings.bytes[i], I2C_MAX_RETRY);
+      ESP_LOGE(TAG, "Failed to write byte %02d (0x%02X) after %d attempts", i, settings_bytes[i], I2C_MAX_RETRY);
       i2c_ready_ = false;
       break;
     }
diff --git a/esphome/components/kp18058/kp18058_cfg.h b/esphome/components/kp18058/kp18058_cfg.h
index 2535f8007d..0f519255fb 100644
--- a/esphome/components/kp18058/kp18058_cfg.h
+++ b/esphome/components/kp18058/kp18058_cfg.h
@@ -92,49 +92,43 @@ enum CDFrequency : uint8_t {
 #pragma pack(push, 1)
 
 /**
- * @brief Union representing the structure of the I2C message for configuring the KP18058 LED driver settings.
+ * @brief the structure of the I2C message for configuring the KP18058 LED driver settings.
  */
-typedef union {
-  // Access the settings as a structure
+struct KP18058_Settings {
+  // Byte 0
+  uint8_t byte0_parity_bit : 1;
+  uint8_t start_byte_address : 4;
+  WorkingMode working_mode : 2;
+  uint8_t address_identification : 1;
+
+  // Byte 1
+  uint8_t byte1_parity_bit : 1;
+  LCSlope line_comp_slope : 2;
+  LCThreshold line_comp_threshold : 4;
+  LCMode line_compensation_enable : 1;
+
+  // Byte 2
+  uint8_t byte2_parity_bit : 1;
+  uint8_t max_current_out1_3 : 5;
+  CDFrequency chop_dimming_frequency : 2;
+
+  // Byte 3
+  uint8_t byte3_parity_bit : 1;
+  uint8_t max_current_out4_5 : 5;
+  RCFilter rc_filter_enable : 1;
+  DimmingMode chop_dimming_out1_3 : 1;
+
+  // Channel array for OUT1 to OUT5 grayscale data
   struct {
-    // Byte 0
-    uint8_t byte0_parity_bit : 1;
-    uint8_t start_byte_address : 4;
-    WorkingMode working_mode : 2;
-    uint8_t address_identification : 1;
+    uint8_t upper_parity : 1;
+    uint8_t upper_grayscale : 5; /**< upper 5 bits of the channel value */
+    uint8_t upper_reserved : 2;
 
-    // Byte 1
-    uint8_t byte1_parity_bit : 1;
-    LCSlope line_comp_slope : 2;
-    LCThreshold line_comp_threshold : 4;
-    LCMode line_compensation_enable : 1;
-
-    // Byte 2
-    uint8_t byte2_parity_bit : 1;
-    uint8_t max_current_out1_3 : 5;
-    CDFrequency chop_dimming_frequency : 2;
-
-    // Byte 3
-    uint8_t byte3_parity_bit : 1;
-    uint8_t max_current_out4_5 : 5;
-    RCFilter rc_filter_enable : 1;
-    DimmingMode chop_dimming_out1_3 : 1;
-
-    // Channel array for OUT1 to OUT5 grayscale data
-    struct {
-      uint8_t upper_parity : 1;
-      uint8_t upper_grayscale : 5; /**< upper 5 bits of the channel value */
-      uint8_t upper_reserved : 2;
-
-      uint8_t lower_parity : 1;
-      uint8_t lower_grayscale : 5; /**< lower 5 bits of the channel value */
-      uint8_t lower_reserved : 2;
-    } channels[5];
-  };
-
-  // Access the settings as a byte array
-  uint8_t bytes[14];
-} KP18058_Settings;
+    uint8_t lower_parity : 1;
+    uint8_t lower_grayscale : 5; /**< lower 5 bits of the channel value */
+    uint8_t lower_reserved : 2;
+  } channels[5];
+};
 
 #pragma pack(pop)