diff --git a/homeassistant/components/balboa/climate.py b/homeassistant/components/balboa/climate.py
index 06e8d265502..0d0fa9bd179 100644
--- a/homeassistant/components/balboa/climate.py
+++ b/homeassistant/components/balboa/climate.py
@@ -78,7 +78,7 @@ class BalboaClimateEntity(BalboaEntity, ClimateEntity):
         return HEAT_HVAC_MODE_MAP.get(self._client.heat_mode.state)
 
     @property
-    def hvac_action(self) -> str:
+    def hvac_action(self) -> HVACAction:
         """Return the current operation mode."""
         return HEAT_STATE_HVAC_ACTION_MAP[self._client.heat_state]