From 4ad5ce6d5298ac7f3fa4fb3e40d03249d038434b Mon Sep 17 00:00:00 2001
From: jbouwh <jan@jbsoft.nl>
Date: Wed, 1 Jan 2025 13:17:57 +0000
Subject: [PATCH] Set climate state to off if `is_on` is `False`

---
 homeassistant/components/climate/__init__.py | 2 ++
 tests/components/climate/test_init.py        | 7 +++++++
 2 files changed, 9 insertions(+)

diff --git a/homeassistant/components/climate/__init__.py b/homeassistant/components/climate/__init__.py
index 7e05a973d1c..4a5018f3b31 100644
--- a/homeassistant/components/climate/__init__.py
+++ b/homeassistant/components/climate/__init__.py
@@ -354,6 +354,8 @@ class ClimateEntity(Entity, cached_properties=CACHED_PROPERTIES_WITH_ATTR_):
         hvac_mode = self.hvac_mode
         if hvac_mode is None:
             return None
+        if hasattr(self, "_attr_is_on") and self._attr_is_on is False:
+            return HVACMode.OFF.value
         # Support hvac_mode as string for custom integration backwards compatibility
         if not isinstance(hvac_mode, HVACMode):
             return HVACMode(hvac_mode).value  # type: ignore[unreachable]
diff --git a/tests/components/climate/test_init.py b/tests/components/climate/test_init.py
index 218069e4f21..ec555f7153b 100644
--- a/tests/components/climate/test_init.py
+++ b/tests/components/climate/test_init.py
@@ -490,6 +490,13 @@ async def test_turn_on_off_toggle(hass: HomeAssistant) -> None:
     climate._attr_hvac_mode = None
     assert climate.is_on is None
 
+    # If _attr_is_on is set to False the state should be always off
+    climate._attr_hvac_action = HVACAction.IDLE
+    climate._attr_hvac_mode = HVACMode.AUTO
+    climate._attr_is_on = False
+    assert climate.is_on is False
+    assert climate.state == HVACMode.OFF
+
 
 async def test_sync_toggle(hass: HomeAssistant) -> None:
     """Test if async toggle calls sync toggle."""