diff --git a/esphome/components/feedback/feedback_cover.cpp b/esphome/components/feedback/feedback_cover.cpp
index d247bada33f..1dff210cd6b 100644
--- a/esphome/components/feedback/feedback_cover.cpp
+++ b/esphome/components/feedback/feedback_cover.cpp
@@ -437,10 +437,15 @@ void FeedbackCover::recompute_position_() {
   }
 
   // check if we have an acceleration_wait_time, and remove from position computation
-  if (now > (this->start_dir_time_ + this->acceleration_wait_time_)) {
-    this->position +=
-        dir * (now - std::max(this->start_dir_time_ + this->acceleration_wait_time_, this->last_recompute_time_)) /
-        (action_dur - this->acceleration_wait_time_);
+  if (now - this->start_dir_time_ > this->acceleration_wait_time_) {
+    uint32_t accel_end_time = this->start_dir_time_ + this->acceleration_wait_time_;
+    uint32_t effective_start;
+    if (static_cast<int32_t>(accel_end_time - this->last_recompute_time_) >= 0) {
+      effective_start = accel_end_time;
+    } else {
+      effective_start = this->last_recompute_time_;
+    }
+    this->position += dir * (now - effective_start) / (action_dur - this->acceleration_wait_time_);
     this->position = clamp(this->position, min_pos, max_pos);
   }
   this->last_recompute_time_ = now;
diff --git a/esphome/components/hc8/hc8.cpp b/esphome/components/hc8/hc8.cpp
index 4c2d367b244..900acca6918 100644
--- a/esphome/components/hc8/hc8.cpp
+++ b/esphome/components/hc8/hc8.cpp
@@ -24,12 +24,16 @@ void HC8Component::setup() {
 }
 
 void HC8Component::update() {
-  uint32_t now_ms = App.get_loop_component_start_time();
-  uint32_t warmup_ms = this->warmup_seconds_ * 1000;
-  if (now_ms < warmup_ms) {
-    ESP_LOGW(TAG, "HC8 warming up, %" PRIu32 " s left", (warmup_ms - now_ms) / 1000);
-    this->status_set_warning();
-    return;
+  if (!this->warmup_complete_) {
+    uint32_t now_ms = App.get_loop_component_start_time();
+    uint32_t warmup_ms = this->warmup_seconds_ * 1000;
+    if (now_ms < warmup_ms) {
+      ESP_LOGW(TAG, "HC8 warming up, %" PRIu32 " s left", (warmup_ms - now_ms) / 1000);
+      this->status_set_warning();
+      return;
+    }
+    this->warmup_complete_ = true;
+    this->status_clear_warning();
   }
 
   while (this->available())
diff --git a/esphome/components/hc8/hc8.h b/esphome/components/hc8/hc8.h
index 74257fab148..b060f38a806 100644
--- a/esphome/components/hc8/hc8.h
+++ b/esphome/components/hc8/hc8.h
@@ -23,6 +23,7 @@ class HC8Component : public PollingComponent, public uart::UARTDevice {
  protected:
   sensor::Sensor *co2_sensor_{nullptr};
   uint32_t warmup_seconds_{0};
+  bool warmup_complete_{false};
 };
 
 template<typename... Ts> class HC8CalibrateAction : public Action<Ts...>, public Parented<HC8Component> {
diff --git a/esphome/components/he60r/he60r.cpp b/esphome/components/he60r/he60r.cpp
index fdcd1a29c05..47440cc1f73 100644
--- a/esphome/components/he60r/he60r.cpp
+++ b/esphome/components/he60r/he60r.cpp
@@ -239,7 +239,7 @@ void HE60rCover::recompute_position_() {
     return;
 
   const uint32_t now = millis();
-  if (now > this->last_recompute_time_) {
+  if (now != this->last_recompute_time_) {
     auto diff = (unsigned) (now - last_recompute_time_);
     float delta;
     switch (this->current_operation) {
diff --git a/esphome/components/nextion/nextion.cpp b/esphome/components/nextion/nextion.cpp
index 9f1ce47837c..c8c1b6fa412 100644
--- a/esphome/components/nextion/nextion.cpp
+++ b/esphome/components/nextion/nextion.cpp
@@ -337,7 +337,7 @@ void Nextion::loop() {
       this->started_ms_ = App.get_loop_component_start_time();
 
     if (this->startup_override_ms_ > 0 &&
-        this->started_ms_ + this->startup_override_ms_ < App.get_loop_component_start_time()) {
+        App.get_loop_component_start_time() - this->started_ms_ > this->startup_override_ms_) {
       ESP_LOGV(TAG, "Manual ready set");
       this->connection_state_.nextion_reports_is_setup_ = true;
     }
@@ -853,10 +853,10 @@ void Nextion::process_nextion_commands_() {
   const uint32_t ms = App.get_loop_component_start_time();
 
   if (this->max_q_age_ms_ > 0 && !this->nextion_queue_.empty() &&
-      this->nextion_queue_.front()->queue_time + this->max_q_age_ms_ < ms) {
+      ms - this->nextion_queue_.front()->queue_time > this->max_q_age_ms_) {
     for (size_t i = 0; i < this->nextion_queue_.size(); i++) {
       NextionComponentBase *component = this->nextion_queue_[i]->component;
-      if (this->nextion_queue_[i]->queue_time + this->max_q_age_ms_ < ms) {
+      if (ms - this->nextion_queue_[i]->queue_time > this->max_q_age_ms_) {
         if (this->nextion_queue_[i]->queue_time == 0) {
           ESP_LOGD(TAG, "Remove old queue '%s':'%s' (t=0)", component->get_queue_type_string().c_str(),
                    component->get_variable_name().c_str());
diff --git a/esphome/components/packet_transport/packet_transport.cpp b/esphome/components/packet_transport/packet_transport.cpp
index f241cc61142..6f1286b4693 100644
--- a/esphome/components/packet_transport/packet_transport.cpp
+++ b/esphome/components/packet_transport/packet_transport.cpp
@@ -330,15 +330,16 @@ void PacketTransport::update() {
   if (!this->ping_pong_enable_) {
     return;
   }
-  auto now = millis() / 1000;
-  if (this->last_key_time_ + this->ping_pong_recyle_time_ < now) {
+  uint32_t now = millis();
+  uint32_t ping_request_age = now - this->last_key_time_;
+  if (ping_request_age > this->ping_pong_recyle_time_ * 1000u) {
     this->resend_ping_key_ = this->ping_pong_enable_;
-    ESP_LOGV(TAG, "Ping request, age %" PRIu32, now - this->last_key_time_);
+    ESP_LOGV(TAG, "Ping request, age %" PRIu32, ping_request_age);
     this->last_key_time_ = now;
   }
   for (const auto &provider : this->providers_) {
     uint32_t key_response_age = now - provider.second.last_key_response_time;
-    if (key_response_age > (this->ping_pong_recyle_time_ * 2u)) {
+    if (key_response_age > (this->ping_pong_recyle_time_ * 2000u)) {
 #ifdef USE_STATUS_SENSOR
       if (provider.second.status_sensor != nullptr && provider.second.status_sensor->state) {
         ESP_LOGI(TAG, "Ping status for %s timeout at %" PRIu32 " with age %" PRIu32, provider.first.c_str(), now,
@@ -496,7 +497,7 @@ void PacketTransport::process_(std::span<const uint8_t> data) {
     if (decoder.decode(PING_KEY, key) == DECODE_OK) {
       if (key == this->ping_key_) {
         ping_key_seen = true;
-        provider.last_key_response_time = millis() / 1000;
+        provider.last_key_response_time = millis();
         ESP_LOGV(TAG, "Found good ping key %X at timestamp %" PRIu32, (unsigned) key, provider.last_key_response_time);
       } else {
         ESP_LOGV(TAG, "Unknown ping key %X", (unsigned) key);
diff --git a/esphome/components/runtime_stats/runtime_stats.cpp b/esphome/components/runtime_stats/runtime_stats.cpp
index d9fa22d9495..cb28acc96c6 100644
--- a/esphome/components/runtime_stats/runtime_stats.cpp
+++ b/esphome/components/runtime_stats/runtime_stats.cpp
@@ -9,21 +9,16 @@ namespace esphome {
 
 namespace runtime_stats {
 
-RuntimeStatsCollector::RuntimeStatsCollector() : log_interval_(60000), next_log_time_(0) {
+RuntimeStatsCollector::RuntimeStatsCollector() : log_interval_(60000), next_log_time_(60000) {
   global_runtime_stats = this;
 }
 
-void RuntimeStatsCollector::record_component_time(Component *component, uint32_t duration_us, uint32_t current_time) {
+void RuntimeStatsCollector::record_component_time(Component *component, uint32_t duration_us) {
   if (component == nullptr)
     return;
 
   // Record stats using component pointer as key
   this->component_stats_[component].record_time(duration_us);
-
-  if (this->next_log_time_ == 0) {
-    this->next_log_time_ = current_time + this->log_interval_;
-    return;
-  }
 }
 
 void RuntimeStatsCollector::log_stats_() {
@@ -88,10 +83,7 @@ void RuntimeStatsCollector::log_stats_() {
 }
 
 void RuntimeStatsCollector::process_pending_stats(uint32_t current_time) {
-  if (this->next_log_time_ == 0)
-    return;
-
-  if (current_time >= this->next_log_time_) {
+  if ((int32_t) (current_time - this->next_log_time_) >= 0) {
     this->log_stats_();
     this->reset_stats_();
     this->next_log_time_ = current_time + this->log_interval_;
diff --git a/esphome/components/runtime_stats/runtime_stats.h b/esphome/components/runtime_stats/runtime_stats.h
index 08475297208..303d895985f 100644
--- a/esphome/components/runtime_stats/runtime_stats.h
+++ b/esphome/components/runtime_stats/runtime_stats.h
@@ -7,6 +7,7 @@
 #include <map>
 #include <cstdint>
 #include <cstring>
+#include "esphome/core/hal.h"
 #include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
 
@@ -80,10 +81,13 @@ class RuntimeStatsCollector {
  public:
   RuntimeStatsCollector();
 
-  void set_log_interval(uint32_t log_interval) { this->log_interval_ = log_interval; }
+  void set_log_interval(uint32_t log_interval) {
+    this->log_interval_ = log_interval;
+    this->next_log_time_ = millis() + log_interval;
+  }
   uint32_t get_log_interval() const { return this->log_interval_; }
 
-  void record_component_time(Component *component, uint32_t duration_us, uint32_t current_time);
+  void record_component_time(Component *component, uint32_t duration_us);
 
   // Process any pending stats printing (should be called after component loop)
   void process_pending_stats(uint32_t current_time);
@@ -101,7 +105,7 @@ class RuntimeStatsCollector {
   // We use Component* as the key since each component is unique
   std::map<Component *, ComponentRuntimeStats> component_stats_;
   uint32_t log_interval_;
-  uint32_t next_log_time_;
+  uint32_t next_log_time_{0};
 };
 
 }  // namespace runtime_stats
diff --git a/esphome/components/usb_uart/usb_uart.cpp b/esphome/components/usb_uart/usb_uart.cpp
index 5c0397b2cb4..e20bbd02dbc 100644
--- a/esphome/components/usb_uart/usb_uart.cpp
+++ b/esphome/components/usb_uart/usb_uart.cpp
@@ -171,8 +171,8 @@ void USBUartChannel::flush() {
   // Safe to call from the main loop only.
   // The 100 ms timeout guards against a device that stops responding mid-flush;
   // in that case the main loop is blocked for the full duration.
-  uint32_t deadline = millis() + 100;  // 100 ms safety timeout
-  while ((!this->output_queue_.empty() || this->output_started_.load()) && millis() < deadline) {
+  uint32_t start = millis();  // 100 ms safety timeout
+  while ((!this->output_queue_.empty() || this->output_started_.load()) && millis() - start < 100) {
     // Kick start_output() in case data arrived but no transfer is in flight yet.
     this->parent_->start_output(this);
     yield();
diff --git a/esphome/components/whirlpool/whirlpool.h b/esphome/components/whirlpool/whirlpool.h
index 907a21225ce..992b2a7adfd 100644
--- a/esphome/components/whirlpool/whirlpool.h
+++ b/esphome/components/whirlpool/whirlpool.h
@@ -48,7 +48,7 @@ class WhirlpoolClimate : public climate_ir::ClimateIR {
   /// Handle received IR Buffer
   bool on_receive(remote_base::RemoteReceiveData data) override;
   /// Set the time of the last transmission.
-  int32_t last_transmit_time_{};
+  uint32_t last_transmit_time_{};
 
   bool send_swing_cmd_{false};
   Model model_;
diff --git a/esphome/core/component.cpp b/esphome/core/component.cpp
index 8c2c8d38e8a..a9ff3ec1eb5 100644
--- a/esphome/core/component.cpp
+++ b/esphome/core/component.cpp
@@ -534,7 +534,7 @@ uint32_t WarnIfComponentBlockingGuard::finish() {
   // 1ms granularity, so results were essentially random noise.
   if (global_runtime_stats != nullptr) {
     uint32_t duration_us = micros() - this->started_us_;
-    global_runtime_stats->record_component_time(this->component_, duration_us, curr_time);
+    global_runtime_stats->record_component_time(this->component_, duration_us);
   }
 #endif
   if (blocking_time > WARN_IF_BLOCKING_OVER_MS) {