diff --git a/esphome/core/scheduler.cpp b/esphome/core/scheduler.cpp
index b0eaa670ac..a6f1558e4a 100644
--- a/esphome/core/scheduler.cpp
+++ b/esphome/core/scheduler.cpp
@@ -235,11 +235,11 @@ void HOT Scheduler::set_timer_common_(Component *component, SchedulerItem::Type
   }
   target->push_back(item);
   if (target == &this->to_add_) {
-    this->to_add_count_increment_();
+    this->to_add_count_increment_locked_();
   }
 #ifndef ESPHOME_THREAD_SINGLE
   else {
-    this->defer_count_increment_();
+    this->defer_count_increment_locked_();
   }
 #endif
 }
@@ -452,7 +452,7 @@ void Scheduler::full_cleanup_removed_items_() {
   this->items_.erase(this->items_.begin() + write, this->items_.end());
   // Rebuild the heap structure since items are no longer in heap order
   std::make_heap(this->items_.begin(), this->items_.end(), SchedulerItem::cmp);
-  this->to_remove_clear_();
+  this->to_remove_clear_locked_();
 }
 
 #ifndef ESPHOME_THREAD_SINGLE
@@ -501,7 +501,7 @@ void HOT Scheduler::process_defer_queue_slow_path_(uint32_t &now) {
 
   this->lock_.lock();
   // Reset counter and snapshot queue end under lock
-  this->defer_count_clear_();
+  this->defer_count_clear_locked_();
   size_t defer_queue_end = this->defer_queue_.size();
   if (this->defer_queue_front_ >= defer_queue_end) {
     this->lock_.unlock();
@@ -621,7 +621,7 @@ uint32_t HOT Scheduler::call(uint32_t now) {
       LockGuard guard{this->lock_};
       if (is_item_removed_locked_(item)) {
         this->recycle_item_main_loop_(this->pop_raw_locked_());
-        this->to_remove_decrement_();
+        this->to_remove_decrement_locked_();
         continue;
       }
     }
@@ -630,7 +630,7 @@ uint32_t HOT Scheduler::call(uint32_t now) {
     if (is_item_removed_(item)) {
       LockGuard guard{this->lock_};
       this->recycle_item_main_loop_(this->pop_raw_locked_());
-      this->to_remove_decrement_();
+      this->to_remove_decrement_locked_();
       continue;
     }
 #endif
@@ -658,7 +658,7 @@ uint32_t HOT Scheduler::call(uint32_t now) {
 
     if (this->is_item_removed_locked_(executed_item)) {
       // We were removed/cancelled in the function call, recycle and continue
-      this->to_remove_decrement_();
+      this->to_remove_decrement_locked_();
       this->recycle_item_main_loop_(executed_item);
       continue;
     }
@@ -721,7 +721,7 @@ void HOT Scheduler::process_to_add_slow_path_() {
     std::push_heap(this->items_.begin(), this->items_.end(), SchedulerItem::cmp);
   }
   this->to_add_.clear();
-  this->to_add_count_clear_();
+  this->to_add_count_clear_locked_();
 }
 bool HOT Scheduler::cleanup_slow_path_() {
   // We must hold the lock for the entire cleanup operation because:
@@ -737,7 +737,7 @@ bool HOT Scheduler::cleanup_slow_path_() {
     SchedulerItem *item = this->items_[0];
     if (!this->is_item_removed_locked_(item))
       break;
-    this->to_remove_decrement_();
+    this->to_remove_decrement_locked_();
     this->recycle_item_main_loop_(this->pop_raw_locked_());
   }
   return !this->items_.empty();
@@ -825,7 +825,7 @@ bool HOT Scheduler::cancel_item_locked_(Component *component, NameType name_type
     size_t heap_cancelled = this->mark_matching_items_removed_locked_(this->items_, component, name_type, static_name,
                                                                       hash_or_id, type, match_retry, find_first);
     total_cancelled += heap_cancelled;
-    this->to_remove_add_(heap_cancelled);
+    this->to_remove_add_locked_(heap_cancelled);
     if (find_first && total_cancelled > 0)
       return true;
   }
diff --git a/esphome/core/scheduler.h b/esphome/core/scheduler.h
index 096291426f..946ec8ca78 100644
--- a/esphome/core/scheduler.h
+++ b/esphome/core/scheduler.h
@@ -552,7 +552,7 @@ class Scheduler {
   }
 
   // Increment to_add_count_ (no-op on single-threaded platforms)
-  void to_add_count_increment_() {
+  void to_add_count_increment_locked_() {
 #ifdef ESPHOME_THREAD_SINGLE
     // No counter needed — to_add_empty_() checks the vector directly
 #elif defined(ESPHOME_THREAD_MULTI_ATOMICS)
@@ -563,7 +563,7 @@ class Scheduler {
   }
 
   // Reset to_add_count_ (no-op on single-threaded platforms)
-  void to_add_count_clear_() {
+  void to_add_count_clear_locked_() {
 #ifdef ESPHOME_THREAD_SINGLE
     // No counter needed — to_add_empty_() checks the vector directly
 #elif defined(ESPHOME_THREAD_MULTI_ATOMICS)
@@ -597,7 +597,7 @@ class Scheduler {
 #endif
   }
 
-  void defer_count_increment_() {
+  void defer_count_increment_locked_() {
 #ifdef ESPHOME_THREAD_MULTI_ATOMICS
     this->defer_count_.fetch_add(1, std::memory_order_relaxed);
 #else
@@ -605,7 +605,7 @@ class Scheduler {
 #endif
   }
 
-  void defer_count_clear_() {
+  void defer_count_clear_locked_() {
 #ifdef ESPHOME_THREAD_MULTI_ATOMICS
     this->defer_count_.store(0, std::memory_order_relaxed);
 #else
@@ -635,7 +635,7 @@ uint32_t to_remove_{0};
 #endif
   }
 
-  void to_remove_add_(uint32_t count) {
+  void to_remove_add_locked_(uint32_t count) {
 #ifdef ESPHOME_THREAD_MULTI_ATOMICS
     this->to_remove_.fetch_add(count, std::memory_order_relaxed);
 #else
@@ -643,7 +643,7 @@ uint32_t to_remove_{0};
 #endif
   }
 
-  void to_remove_decrement_() {
+  void to_remove_decrement_locked_() {
 #ifdef ESPHOME_THREAD_MULTI_ATOMICS
     this->to_remove_.fetch_sub(1, std::memory_order_relaxed);
 #else
@@ -651,7 +651,7 @@ uint32_t to_remove_{0};
 #endif
   }
 
-  void to_remove_clear_() {
+  void to_remove_clear_locked_() {
 #ifdef ESPHOME_THREAD_MULTI_ATOMICS
     this->to_remove_.store(0, std::memory_order_relaxed);
 #else