diff --git a/homeassistant/components/climate/__init__.py b/homeassistant/components/climate/__init__.py
index ed0f8f2a4aa..c5bc22ebc0c 100644
--- a/homeassistant/components/climate/__init__.py
+++ b/homeassistant/components/climate/__init__.py
@@ -214,9 +214,9 @@ class ClimateEntity(Entity):
     _attr_current_temperature: float | None = None
     _attr_fan_mode: str | None
     _attr_fan_modes: list[str] | None
-    _attr_hvac_action: HVACAction | str | None = None
-    _attr_hvac_mode: HVACMode | str | None
-    _attr_hvac_modes: list[HVACMode] | list[str]
+    _attr_hvac_action: HVACAction | None = None
+    _attr_hvac_mode: HVACMode | None
+    _attr_hvac_modes: list[HVACMode]
     _attr_is_aux_heat: bool | None
     _attr_max_humidity: int = DEFAULT_MAX_HUMIDITY
     _attr_max_temp: float
@@ -361,17 +361,17 @@ class ClimateEntity(Entity):
         return self._attr_target_humidity
 
     @property
-    def hvac_mode(self) -> HVACMode | str | None:
+    def hvac_mode(self) -> HVACMode | None:
         """Return hvac operation ie. heat, cool mode."""
         return self._attr_hvac_mode
 
     @property
-    def hvac_modes(self) -> list[HVACMode] | list[str]:
+    def hvac_modes(self) -> list[HVACMode]:
         """Return the list of available hvac operation modes."""
         return self._attr_hvac_modes
 
     @property
-    def hvac_action(self) -> HVACAction | str | None:
+    def hvac_action(self) -> HVACAction | None:
         """Return the current running hvac operation if supported."""
         return self._attr_hvac_action
 
diff --git a/pylint/plugins/hass_enforce_type_hints.py b/pylint/plugins/hass_enforce_type_hints.py
index 0320ff2d4f4..85b1b1370a1 100644
--- a/pylint/plugins/hass_enforce_type_hints.py
+++ b/pylint/plugins/hass_enforce_type_hints.py
@@ -1023,15 +1023,15 @@ _INHERITANCE_MATCH: dict[str, list[ClassTypeHintMatch]] = {
                 ),
                 TypeHintMatch(
                     function_name="hvac_mode",
-                    return_type=["HVACMode", "str", None],
+                    return_type=["HVACMode", None],
                 ),
                 TypeHintMatch(
                     function_name="hvac_modes",
-                    return_type=["list[HVACMode]", "list[str]"],
+                    return_type="list[HVACMode]",
                 ),
                 TypeHintMatch(
                     function_name="hvac_action",
-                    return_type=["HVACAction", "str", None],
+                    return_type=["HVACAction", None],
                 ),
                 TypeHintMatch(
                     function_name="current_temperature",