diff --git a/esphome/components/seeed_mr60bha2/seeed_mr60bha2.cpp b/esphome/components/seeed_mr60bha2/seeed_mr60bha2.cpp
index 5a8a1e4656..da2cb26ee4 100644
--- a/esphome/components/seeed_mr60bha2/seeed_mr60bha2.cpp
+++ b/esphome/components/seeed_mr60bha2/seeed_mr60bha2.cpp
@@ -60,7 +60,7 @@ void MR60BHA2Component::loop() {
  * @param len The length of the byte array.
  * @return The calculated checksum.
  */
-uint8_t MR60BHA2Component::calculate_checksum_(const uint8_t *data, size_t len) {
+static uint8_t calculate_checksum(const uint8_t *data, size_t len) {
   uint8_t checksum = 0;
   for (size_t i = 0; i < len; i++) {
     checksum ^= data[i];
@@ -80,8 +80,8 @@ uint8_t MR60BHA2Component::calculate_checksum_(const uint8_t *data, size_t len)
  * @param expected_checksum The expected checksum.
  * @return True if the checksum is valid, false otherwise.
  */
-bool MR60BHA2Component::validate_checksum_(const uint8_t *data, size_t len, uint8_t expected_checksum) {
-  return calculate_checksum_(data, len) == expected_checksum;
+static bool validate_checksum(const uint8_t *data, size_t len, uint8_t expected_checksum) {
+  return calculate_checksum(data, len) == expected_checksum;
 }
 
 void MR60BHA2Component::split_frame_(uint8_t buffer) {
@@ -156,7 +156,7 @@ void MR60BHA2Component::split_frame_(uint8_t buffer) {
       }
       break;
     case LOCATE_HEAD_CKSUM_FRAME:
-      if (this->validate_checksum_(this->current_frame_buf_, this->current_frame_len_, buffer)) {
+      if (validate_checksum(this->current_frame_buf_, this->current_frame_len_, buffer)) {
         this->current_frame_len_++;
         this->current_frame_buf_[this->current_frame_len_ - 1] = buffer;
         this->current_frame_locate_++;
@@ -182,7 +182,7 @@ void MR60BHA2Component::split_frame_(uint8_t buffer) {
       }
       break;
     case LOCATE_DATA_CKSUM_FRAME:
-      if (this->validate_checksum_(this->current_data_buf_, this->current_data_frame_len_, buffer)) {
+      if (validate_checksum(this->current_data_buf_, this->current_data_frame_len_, buffer)) {
         this->current_frame_len_++;
         this->current_frame_buf_[this->current_frame_len_ - 1] = buffer;
         this->current_frame_locate_++;
diff --git a/esphome/components/seeed_mr60bha2/seeed_mr60bha2.h b/esphome/components/seeed_mr60bha2/seeed_mr60bha2.h
index 416fd2f9de..6e7c52bf10 100644
--- a/esphome/components/seeed_mr60bha2/seeed_mr60bha2.h
+++ b/esphome/components/seeed_mr60bha2/seeed_mr60bha2.h
@@ -57,8 +57,6 @@ class MR60BHA2Component : public Component,
   uint32_t current_heart_rate_int_;
   uint32_t current_distance_int_;
 
-  bool validate_checksum_(const uint8_t *data, size_t len, uint8_t expected_checksum);
-  uint8_t calculate_checksum_(const uint8_t *data, size_t len);
   void split_frame_(uint8_t buffer);
   void process_frame_();