diff --git a/esphome/components/web_server_idf/web_server_idf.cpp b/esphome/components/web_server_idf/web_server_idf.cpp
index 10c6660766..a2ed727f47 100644
--- a/esphome/components/web_server_idf/web_server_idf.cpp
+++ b/esphome/components/web_server_idf/web_server_idf.cpp
@@ -425,14 +425,14 @@ void AsyncEventSourceResponse::destroy(void *ptr) {
 void AsyncEventSourceResponse::deq_push_back_with_dedup_(void *source, message_generator_t *message_generator) {
   DeferredEvent item(source, message_generator);
 
-  auto iter = std::find_if(this->deferred_queue_.begin(), this->deferred_queue_.end(),
-                           [&item](const DeferredEvent &test) -> bool { return test == item; });
-
-  if (iter != this->deferred_queue_.end()) {
-    (*iter) = item;
-  } else {
-    this->deferred_queue_.push_back(item);
+  // Replace std::find_if with simple loop to reduce binary size
+  for (auto &event : this->deferred_queue_) {
+    if (event == item) {
+      event = item;
+      return;
+    }
   }
+  this->deferred_queue_.push_back(item);
 }
 
 void AsyncEventSourceResponse::process_deferred_queue_() {
diff --git a/esphome/core/application.cpp b/esphome/core/application.cpp
index f7f9dce2dd..3e4662989b 100644
--- a/esphome/core/application.cpp
+++ b/esphome/core/application.cpp
@@ -497,24 +497,24 @@ void Application::unregister_socket_fd(int fd) {
   if (fd < 0)
     return;
 
-  auto it = std::find(this->socket_fds_.begin(), this->socket_fds_.end(), fd);
-  if (it != this->socket_fds_.end()) {
+  for (size_t i = 0; i < this->socket_fds_.size(); i++) {
+    if (this->socket_fds_[i] != fd)
+      continue;
+
     // Swap with last element and pop - O(1) removal since order doesn't matter
-    if (it != this->socket_fds_.end() - 1) {
-      std::swap(*it, this->socket_fds_.back());
-    }
+    if (i < this->socket_fds_.size() - 1)
+      this->socket_fds_[i] = this->socket_fds_.back();
     this->socket_fds_.pop_back();
     this->socket_fds_changed_ = true;
 
     // Only recalculate max_fd if we removed the current max
     if (fd == this->max_fd_) {
-      if (this->socket_fds_.empty()) {
-        this->max_fd_ = -1;
-      } else {
-        // Find new max using std::max_element
-        this->max_fd_ = *std::max_element(this->socket_fds_.begin(), this->socket_fds_.end());
-      }
+      this->max_fd_ = -1;
+      for (int sock_fd : this->socket_fds_)
+        if (sock_fd > this->max_fd_)
+          this->max_fd_ = sock_fd;
     }
+    return;
   }
 }