diff --git a/homeassistant/components/climate/__init__.py b/homeassistant/components/climate/__init__.py
index 91681c9566a..a77aeb84492 100644
--- a/homeassistant/components/climate/__init__.py
+++ b/homeassistant/components/climate/__init__.py
@@ -191,7 +191,7 @@ class ClimateEntity(Entity):
     _attr_fan_modes: list[str] | None
     _attr_hvac_action: HVACAction | str | None = None
     _attr_hvac_mode: HVACMode | str | None
-    _attr_hvac_modes: list[HVACMode | str]
+    _attr_hvac_modes: list[HVACMode] | list[str]
     _attr_is_aux_heat: bool | None
     _attr_max_humidity: int = DEFAULT_MAX_HUMIDITY
     _attr_max_temp: float
@@ -341,7 +341,7 @@ class ClimateEntity(Entity):
         return self._attr_hvac_mode
 
     @property
-    def hvac_modes(self) -> list[HVACMode | str]:
+    def hvac_modes(self) -> list[HVACMode] | list[str]:
         """Return the list of available hvac operation modes."""
         return self._attr_hvac_modes
 
diff --git a/homeassistant/components/tuya/climate.py b/homeassistant/components/tuya/climate.py
index 1f433079817..926849da81a 100644
--- a/homeassistant/components/tuya/climate.py
+++ b/homeassistant/components/tuya/climate.py
@@ -207,7 +207,7 @@ class TuyaClimateEntity(TuyaEntity, ClimateEntity):
             self._attr_target_temperature_step = self._set_temperature.step_scaled
 
         # Determine HVAC modes
-        self._attr_hvac_modes = []
+        self._attr_hvac_modes: list[str] = []
         self._hvac_to_tuya = {}
         if enum_type := self.find_dpcode(
             DPCode.MODE, dptype=DPType.ENUM, prefer_function=True