diff --git a/components/tc_bus/tc_bus.cpp b/components/tc_bus/tc_bus.cpp
index 69f7edb..cd221f2 100644
--- a/components/tc_bus/tc_bus.cpp
+++ b/components/tc_bus/tc_bus.cpp
@@ -44,7 +44,7 @@ namespace esphome
         {
             ESP_LOGCONFIG(TAG, "Setting up TC:BUS Intercom...");
 
-            this->pref_ = global_preferences->make_preference<Model>(this->get_object_id_hash());
+            this->pref_ = global_preferences->make_preference<Model>(global_tcs_id);
 
             Model saved_model;
             if (this->pref_.load(&saved_model))
@@ -54,7 +54,7 @@ namespace esphome
             else
             {
                 this->model_ = MODEL_NONE;
-                this->pref_.save(this->model_);
+                this->pref_.save(&this->model_);
             }
 
             #ifdef USE_SELECT
@@ -942,7 +942,7 @@ namespace esphome
 
             Model model = string_to_model(value);
             this->parent_->model_ = model;
-            this->parent_->pref_.save(model);
+            this->parent_->pref_.save(&model);
         }
         #endif