diff --git a/esphome/components/sgp30/sgp30.cpp b/esphome/components/sgp30/sgp30.cpp
index d70c47a938b..1d23e3eab0f 100644
--- a/esphome/components/sgp30/sgp30.cpp
+++ b/esphome/components/sgp30/sgp30.cpp
@@ -75,7 +75,8 @@ void SGP30Component::setup() {
   // Hash with build time and serial number
   // This ensures the baseline storage is cleared after OTA
   // Serial numbers are unique to each sensor, so multiple sensors can be used without conflict
-  uint32_t hash = static_cast<uint32_t>(App.get_build_time()) ^ static_cast<uint32_t>(this->serial_number_);
+  uint32_t hash = static_cast<uint32_t>(App.get_build_time()) ^ static_cast<uint32_t>(this->serial_number_) ^
+                  static_cast<uint32_t>(this->serial_number_ >> 32);
   this->pref_ = global_preferences->make_preference<SGP30Baselines>(hash, true);
 
   if (this->store_baseline_ && this->pref_.load(&this->baselines_storage_)) {
diff --git a/esphome/components/sgp4x/sgp4x.cpp b/esphome/components/sgp4x/sgp4x.cpp
index 4854b9ec43b..6f21a108776 100644
--- a/esphome/components/sgp4x/sgp4x.cpp
+++ b/esphome/components/sgp4x/sgp4x.cpp
@@ -60,7 +60,8 @@ void SGP4xComponent::setup() {
     // Hash with build time and serial number
     // This ensures the baseline storage is cleared after OTA
     // Serial numbers are unique to each sensor, so multiple sensors can be used without conflict
-    uint32_t hash = static_cast<uint32_t>(App.get_build_time()) ^ static_cast<uint32_t>(this->serial_number_);
+    uint32_t hash = static_cast<uint32_t>(App.get_build_time()) ^ static_cast<uint32_t>(this->serial_number_) ^
+                    static_cast<uint32_t>(this->serial_number_ >> 32);
     this->pref_ = global_preferences->make_preference<SGP4xBaselines>(hash, true);
 
     if (this->pref_.load(&this->voc_baselines_storage_)) {