diff --git a/esphome/components/ld6002b/button/__init__.py b/esphome/components/ld6002b/button/__init__.py
index 22e88062c1b..961527cef18 100644
--- a/esphome/components/ld6002b/button/__init__.py
+++ b/esphome/components/ld6002b/button/__init__.py
@@ -5,6 +5,7 @@ from esphome.components.select import DOMAIN as SELECT_DOMAIN
 import esphome.config_validation as cv
 from esphome.const import (
     CONF_AREA_ID,
+    CONF_ID,
     CONF_WAKEUP_PIN,
     ENTITY_CATEGORY_CONFIG,
     ENTITY_CATEGORY_DIAGNOSTIC,
@@ -141,7 +142,8 @@ async def to_code(config: ConfigType) -> None:
     hub = await cg.get_variable(config[CONF_LD6002B_ID])
     params = button.sub_buttons(config).apply_entity.params
     # One function for all buttons, picking the type by pointer: one class instead of one per button.
-    fn = f"esphome__{hub}__button_fn"
+    # Named after the first button so two button blocks on one hub do not clash.
+    fn = f"esphome__{confs[0][1][CONF_ID].id}__button_fn"
     cg.add_global(
         cg.RawStatement(f"static void {fn}({ParameterListExpression(*params)});")
     )
diff --git a/esphome/components/ld6002b/ld6002b.cpp b/esphome/components/ld6002b/ld6002b.cpp
index f152488fa95..29979a594b1 100644
--- a/esphome/components/ld6002b/ld6002b.cpp
+++ b/esphome/components/ld6002b/ld6002b.cpp
@@ -1390,7 +1390,7 @@ void LD6002BComponent::set_number_value(number::Number *entity, float value) {
     type = NumberType::AREA_Y_MAX;
   else if (entity == this->area_z_min_number_)
     type = NumberType::AREA_Z_MIN;
-  else
+  else  // Only registered entities call this, so the last one needs no compare
     type = NumberType::AREA_Z_MAX;
   switch (type) {
     case NumberType::HOLD_DELAY: {
@@ -1453,7 +1453,7 @@ void LD6002BComponent::set_select_value(select::Select *entity, size_t index) {
     type = SelectType::TRIGGER_SPEED;
   else if (entity == this->installation_select_)
     type = SelectType::INSTALLATION_MODE;
-  else
+  else  // Only registered entities call this, so the last one needs no compare
     type = SelectType::AREA_ID;
   switch (type) {
     case SelectType::SENSITIVITY:
@@ -1825,7 +1825,7 @@ void LD6002BComponent::set_switch_state(switch_::Switch *entity, bool state) {
     type = SwitchType::LOW_POWER;
   else if (entity == this->point_cloud_switch_)
     type = SwitchType::POINT_CLOUD;
-  else
+  else  // Only registered entities call this, so the last one needs no compare
     type = SwitchType::TARGET_DISPLAY;
   switch (type) {
     case SwitchType::LOW_POWER: