diff --git a/esphome/components/nextion/binary_sensor/nextion_binarysensor.cpp b/esphome/components/nextion/binary_sensor/nextion_binarysensor.cpp
index 6dccd1a2d287..bf6e74cb38fe 100644
--- a/esphome/components/nextion/binary_sensor/nextion_binarysensor.cpp
+++ b/esphome/components/nextion/binary_sensor/nextion_binarysensor.cpp
@@ -5,7 +5,7 @@
 namespace esphome {
 namespace nextion {
 
-static const char *TAG = "nextion_binarysensor";
+static const char *const TAG = "nextion_binarysensor";
 
 void NextionBinarySensor::process_bool(const std::string &variable_name, bool state) {
   if (!this->nextion_->is_setup())
diff --git a/esphome/components/nextion/binary_sensor/nextion_binarysensor.h b/esphome/components/nextion/binary_sensor/nextion_binarysensor.h
index 5d2b4f02aee1..b6b23ada85d6 100644
--- a/esphome/components/nextion/binary_sensor/nextion_binarysensor.h
+++ b/esphome/components/nextion/binary_sensor/nextion_binarysensor.h
@@ -32,7 +32,7 @@ class NextionBinarySensor : public NextionComponent,
   NextionQueueType get_queue_type() override { return NextionQueueType::BINARY_SENSOR; }
   void set_state_from_string(const std::string &state_value, bool publish, bool send_to_nextion) override {}
   void set_state_from_int(int state_value, bool publish, bool send_to_nextion) override {
-    this->set_state(state_value == 0 ? false : true, publish, send_to_nextion);
+    this->set_state(state_value != 0, publish, send_to_nextion);
   }
 
  protected:
diff --git a/esphome/components/nextion/nextion.cpp b/esphome/components/nextion/nextion.cpp
index da76655d5a6b..426c95d5eb39 100644
--- a/esphome/components/nextion/nextion.cpp
+++ b/esphome/components/nextion/nextion.cpp
@@ -869,7 +869,7 @@ uint16_t Nextion::recv_ret_string_(std::string &response, uint32_t timeout, bool
   uint16_t ret = 0;
   uint8_t c = 0;
   uint8_t nr_of_ff_bytes = 0;
-  long start;
+  uint64_t start;
   bool exit_flag = false;
   bool ff_flag = false;
 
diff --git a/esphome/components/nextion/nextion.h b/esphome/components/nextion/nextion.h
index 4ae7601d8be6..5666a8884a39 100644
--- a/esphome/components/nextion/nextion.h
+++ b/esphome/components/nextion/nextion.h
@@ -731,7 +731,7 @@ class Nextion : public NextionBase, public PollingComponent, public uart::UARTDe
   std::deque<NextionQueue *> nextion_queue_;
   uint16_t recv_ret_string_(std::string &response, uint32_t timeout, bool recv_flag);
   void all_components_send_state_(bool force_update = false);
-  long comok_sent_ = 0;
+  uint64_t comok_sent_ = 0;
   bool remove_from_q_(bool report_empty = true);
   /**
    * @brief
diff --git a/esphome/components/nextion/nextion_commands.cpp b/esphome/components/nextion/nextion_commands.cpp
index 10526beec771..931b934ba220 100644
--- a/esphome/components/nextion/nextion_commands.cpp
+++ b/esphome/components/nextion/nextion_commands.cpp
@@ -4,7 +4,7 @@
 
 namespace esphome {
 namespace nextion {
-static const char *TAG = "nextion";
+static const char *const TAG = "nextion";
 
 // Sleep safe commands
 void Nextion::soft_reset() { this->send_command_("rest"); }
diff --git a/esphome/components/nextion/nextion_component_base.h b/esphome/components/nextion/nextion_component_base.h
index 65ccc1d460cc..71ad803bc4f2 100644
--- a/esphome/components/nextion/nextion_component_base.h
+++ b/esphome/components/nextion/nextion_component_base.h
@@ -1,4 +1,5 @@
 #pragma once
+#include <utility>
 #include "esphome/core/defines.h"
 
 namespace esphome {
@@ -13,8 +14,8 @@ enum NextionQueueType {
   WAVEFORM_SENSOR = 5,
 };
 
-static const char *NextionQueueTypeStrings[] = {"NO_RESULT", "SENSOR",      "BINARY_SENSOR",
-                                                "SWITCH",    "TEXT_SENSOR", "WAVEFORM_SENSOR"};
+static const char *const NEXTION_QUEUE_TYPE_STRINGS[] = {"NO_RESULT", "SENSOR",      "BINARY_SENSOR",
+                                                         "SWITCH",    "TEXT_SENSOR", "WAVEFORM_SENSOR"};
 
 class NextionComponentBase;
 
@@ -29,10 +30,10 @@ class NextionComponentBase {
  public:
   virtual ~NextionComponentBase() = default;
 
-  void set_variable_name(std::string variable_name, std::string variable_name_to_send = "") {
+  void set_variable_name(const std::string &variable_name, const std::string &variable_name_to_send = "") {
     variable_name_ = variable_name;
     if (variable_name_to_send.empty()) {
-      variable_name_to_send_ = variable_name_;
+      variable_name_to_send_ = variable_name;
     } else {
       variable_name_to_send_ = variable_name_to_send;
     }
@@ -71,7 +72,7 @@ class NextionComponentBase {
   std::string get_variable_name() { return this->variable_name_; }
   std::string get_variable_name_to_send() { return this->variable_name_to_send_; }
   virtual NextionQueueType get_queue_type() { return NextionQueueType::NO_RESULT; }
-  virtual std::string get_queue_type_string() { return NextionQueueTypeStrings[this->get_queue_type()]; }
+  virtual std::string get_queue_type_string() { return NEXTION_QUEUE_TYPE_STRINGS[this->get_queue_type()]; }
   virtual void set_state_from_int(int state_value, bool publish, bool send_to_nextion){};
   virtual void set_state_from_string(const std::string &state_value, bool publish, bool send_to_nextion){};
   virtual void send_state_to_nextion(){};
diff --git a/esphome/components/nextion/nextion_upload.cpp b/esphome/components/nextion/nextion_upload.cpp
index 6fd262c2629f..6a681af6c5e8 100644
--- a/esphome/components/nextion/nextion_upload.cpp
+++ b/esphome/components/nextion/nextion_upload.cpp
@@ -6,7 +6,7 @@
 
 namespace esphome {
 namespace nextion {
-static const char *TAG = "nextion_upload";
+static const char *const TAG = "nextion_upload";
 
 #if defined(USE_TFT_UPLOAD) && (defined(USE_ETHERNET) || defined(USE_WIFI))
 
diff --git a/esphome/components/nextion/sensor/nextion_sensor.cpp b/esphome/components/nextion/sensor/nextion_sensor.cpp
index 45af00375bb0..bbcb465d85c2 100644
--- a/esphome/components/nextion/sensor/nextion_sensor.cpp
+++ b/esphome/components/nextion/sensor/nextion_sensor.cpp
@@ -5,7 +5,7 @@
 namespace esphome {
 namespace nextion {
 
-static const char *TAG = "nextion_sensor";
+static const char *const TAG = "nextion_sensor";
 
 void NextionSensor::process_sensor(const std::string &variable_name, int state) {
   if (!this->nextion_->is_setup())
diff --git a/esphome/components/nextion/switch/nextion_switch.cpp b/esphome/components/nextion/switch/nextion_switch.cpp
index 090addf39dc7..1f32ad34257c 100644
--- a/esphome/components/nextion/switch/nextion_switch.cpp
+++ b/esphome/components/nextion/switch/nextion_switch.cpp
@@ -5,7 +5,7 @@
 namespace esphome {
 namespace nextion {
 
-static const char *TAG = "nextion_switch";
+static const char *const TAG = "nextion_switch";
 
 void NextionSwitch::process_bool(const std::string &variable_name, bool on) {
   if (!this->nextion_->is_setup())
diff --git a/esphome/components/nextion/switch/nextion_switch.h b/esphome/components/nextion/switch/nextion_switch.h
index ced61880dd70..154828747364 100644
--- a/esphome/components/nextion/switch/nextion_switch.h
+++ b/esphome/components/nextion/switch/nextion_switch.h
@@ -24,7 +24,7 @@ class NextionSwitch : public NextionComponent, public switch_::Switch, public Po
   NextionQueueType get_queue_type() override { return NextionQueueType::SWITCH; }
   void set_state_from_string(const std::string &state_value, bool publish, bool send_to_nextion) override {}
   void set_state_from_int(int state_value, bool publish, bool send_to_nextion) override {
-    this->set_state(state_value == 0 ? false : true, publish, send_to_nextion);
+    this->set_state(state_value != 0, publish, send_to_nextion);
   }
 
  protected:
diff --git a/esphome/components/nextion/text_sensor/nextion_textsensor.cpp b/esphome/components/nextion/text_sensor/nextion_textsensor.cpp
index 7d0f1b40968d..08f032df74f1 100644
--- a/esphome/components/nextion/text_sensor/nextion_textsensor.cpp
+++ b/esphome/components/nextion/text_sensor/nextion_textsensor.cpp
@@ -4,7 +4,7 @@
 
 namespace esphome {
 namespace nextion {
-static const char *TAG = "nextion_textsensor";
+static const char *const TAG = "nextion_textsensor";
 
 void NextionTextSensor::process_text(const std::string &variable_name, const std::string &text_value) {
   if (!this->nextion_->is_setup())