diff --git a/homeassistant/helpers/entity.py b/homeassistant/helpers/entity.py
index 8f344aff484..fc627f51acf 100644
--- a/homeassistant/helpers/entity.py
+++ b/homeassistant/helpers/entity.py
@@ -7,7 +7,7 @@ from collections import deque
 from collections.abc import Callable, Coroutine, Iterable, Mapping, MutableMapping
 import dataclasses
 from datetime import timedelta
-from enum import Enum, auto
+from enum import Enum, IntFlag, auto
 import functools as ft
 import logging
 import math
@@ -460,6 +460,9 @@ class Entity(
     # If we reported if this entity was slow
     _slow_reported = False
 
+    # If we reported deprecated supported features constants
+    _deprecated_supported_features_reported = False
+
     # If we reported this entity is updated while disabled
     _disabled_reported = False
 
@@ -1496,6 +1499,31 @@ class Entity(
             self.hass, integration_domain=platform_name, module=type(self).__module__
         )
 
+    @callback
+    def _report_deprecated_supported_features_values(
+        self, replacement: IntFlag
+    ) -> None:
+        """Report deprecated supported features values."""
+        if self._deprecated_supported_features_reported is True:
+            return
+        self._deprecated_supported_features_reported = True
+        report_issue = self._suggest_report_issue()
+        report_issue += (
+            " and reference "
+            "https://developers.home-assistant.io/blog/2023/12/28/support-feature-magic-numbers-deprecation"
+        )
+        _LOGGER.warning(
+            (
+                "Entity %s (%s) is using deprecated supported features"
+                " values which will be removed in HA Core 2025.1. Instead it should use"
+                " %s, please %s"
+            ),
+            self.entity_id,
+            type(self),
+            repr(replacement),
+            report_issue,
+        )
+
 
 class ToggleEntityDescription(EntityDescription, frozen_or_thawed=True):
     """A class that describes toggle entities."""
diff --git a/tests/helpers/test_entity.py b/tests/helpers/test_entity.py
index 2bf90660f31..96bbf95a986 100644
--- a/tests/helpers/test_entity.py
+++ b/tests/helpers/test_entity.py
@@ -3,6 +3,7 @@ import asyncio
 from collections.abc import Iterable
 import dataclasses
 from datetime import timedelta
+from enum import IntFlag
 import logging
 import threading
 from typing import Any
@@ -2025,3 +2026,28 @@ async def test_cached_entity_property_class_attribute(hass: HomeAssistant) -> No
     for ent in entities:
         assert getattr(ent[0], property) == values[1]
         assert getattr(ent[1], property) == values[0]
+
+
+async def test_entity_report_deprecated_supported_features_values(
+    caplog: pytest.LogCaptureFixture,
+) -> None:
+    """Test reporting deprecated supported feature values only happens once."""
+    ent = entity.Entity()
+
+    class MockEntityFeatures(IntFlag):
+        VALUE1 = 1
+        VALUE2 = 2
+
+    ent._report_deprecated_supported_features_values(MockEntityFeatures(2))
+    assert (
+        "is using deprecated supported features values which will be removed"
+        in caplog.text
+    )
+    assert "MockEntityFeatures.VALUE2" in caplog.text
+
+    caplog.clear()
+    ent._report_deprecated_supported_features_values(MockEntityFeatures(2))
+    assert (
+        "is using deprecated supported features values which will be removed"
+        not in caplog.text
+    )