Deprecate aux_heat from Nexia climate entity, implement switch (#125250)

* Remove deprecated aux_heat from nexia

* Add back aux_heat

* Raise issue

homeassistant/components/nexia/climate.py

@@ -35,13 +35,15 @@
 from homeassistant.helpers import entity_platform
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.helpers.issue_registry import IssueSeverity, async_create_issue
 from homeassistant.helpers.typing import VolDictType
 
 from .const import (
     ATTR_AIRCLEANER_MODE,
     ATTR_DEHUMIDIFY_SETPOINT,
     ATTR_HUMIDIFY_SETPOINT,
     ATTR_RUN_MODE,
+    DOMAIN,
 )
 from .coordinator import NexiaDataUpdateCoordinator
 from .entity import NexiaThermostatZoneEntity
@@ -378,11 +380,31 @@ async def async_set_preset_mode(self, preset_mode: str) -> None:
 
     async def async_turn_aux_heat_off(self) -> None:
         """Turn Aux Heat off."""
+        async_create_issue(
+            self.hass,
+            DOMAIN,
+            "migrate_aux_heat",
+            breaks_in_ha_version="2025.4.0",
+            is_fixable=True,
+            is_persistent=True,
+            translation_key="migrate_aux_heat",
+            severity=IssueSeverity.WARNING,
+        )
         await self._thermostat.set_emergency_heat(False)
         self._signal_thermostat_update()
 
     async def async_turn_aux_heat_on(self) -> None:
         """Turn Aux Heat on."""
+        async_create_issue(
+            self.hass,
+            DOMAIN,
+            "migrate_aux_heat",
+            breaks_in_ha_version="2025.4.0",
+            is_fixable=True,
+            is_persistent=True,
+            translation_key="migrate_aux_heat",
+            severity=IssueSeverity.WARNING,
+        )
         await self._thermostat.set_emergency_heat(True)
         self._signal_thermostat_update()
 

homeassistant/components/nexia/strings.json

@@ -96,5 +96,18 @@
         }
       }
     }
+  },
+  "issues": {
+    "migrate_aux_heat": {
+      "title": "Migration of Nexia set_aux_heat action",
+      "fix_flow": {
+        "step": {
+          "confirm": {
+            "description": "The Nexia `set_aux_heat` action has been migrated. A new `aux_heat_only` switch entity is available for each thermostat.\n\nUpdate any automations to use the new Emergency heat switch entity. When this is done, press submit to fix this issue.",
+            "title": "[%key:component::nexia::issues::migrate_aux_heat::title%]"
+          }
+        }
+      }
+    }
   }
 }

homeassistant/components/nexia/switch.py

@@ -25,12 +25,14 @@ async def async_setup_entry(
     """Set up switches for a Nexia device."""
     coordinator = config_entry.runtime_data
     nexia_home = coordinator.nexia_home
-    entities: list[NexiaHoldSwitch] = []
+    entities: list[NexiaHoldSwitch | NexiaEmergencyHeatSwitch] = []
     for thermostat_id in nexia_home.get_thermostat_ids():
         thermostat: NexiaThermostat = nexia_home.get_thermostat_by_id(thermostat_id)
         for zone_id in thermostat.get_zone_ids():
             zone: NexiaThermostatZone = thermostat.get_zone_by_id(zone_id)
             entities.append(NexiaHoldSwitch(coordinator, zone))
+            if thermostat.has_emergency_heat():
+                entities.append(NexiaEmergencyHeatSwitch(coordinator, zone))
 
     async_add_entities(entities)
 
@@ -64,3 +66,31 @@ async def async_turn_off(self, **kwargs: Any) -> None:
         """Disable permanent hold."""
         await self._zone.call_return_to_schedule()
         self._signal_zone_update()
+
+
+class NexiaEmergencyHeatSwitch(NexiaThermostatZoneEntity, SwitchEntity):
+    """Provides Nexia emergency heat switch support."""
+
+    _attr_translation_key = "emergency_heat"
+
+    def __init__(
+        self, coordinator: NexiaDataUpdateCoordinator, zone: NexiaThermostatZone
+    ) -> None:
+        """Initialize the emergency heat mode switch."""
+        zone_id = zone.zone_id
+        super().__init__(coordinator, zone, zone_id)
+
+    @property
+    def is_on(self) -> bool:
+        """Return if the zone is in hold mode."""
+        return self._thermostat.is_emergency_heat_active()
+
+    async def async_turn_on(self, **kwargs: Any) -> None:
+        """Enable permanent hold."""
+        await self._thermostat.set_emergency_heat(True)
+        self._signal_thermostat_update()
+
+    async def async_turn_off(self, **kwargs: Any) -> None:
+        """Disable permanent hold."""
+        await self._thermostat.set_emergency_heat(False)
+        self._signal_thermostat_update()