diff --git a/homeassistant/components/water_heater/__init__.py b/homeassistant/components/water_heater/__init__.py
index 3e1387cb714..c9155950680 100644
--- a/homeassistant/components/water_heater/__init__.py
+++ b/homeassistant/components/water_heater/__init__.py
@@ -25,7 +25,12 @@ from homeassistant.const import (
 from homeassistant.core import HomeAssistant, ServiceCall
 from homeassistant.exceptions import ServiceValidationError
 from homeassistant.helpers import config_validation as cv
-from homeassistant.helpers.deprecation import deprecated_class
+from homeassistant.helpers.deprecation import (
+    DeprecatedConstant,
+    all_with_deprecated_constants,
+    check_if_deprecated_constant,
+    dir_with_deprecated_constants,
+)
 from homeassistant.helpers.entity import Entity, EntityDescription
 from homeassistant.helpers.entity_component import EntityComponent
 from homeassistant.helpers.temperature import display_temp as show_temp
@@ -134,11 +139,11 @@ class WaterHeaterEntityDescription(EntityDescription, frozen_or_thawed=True):
     """A class that describes water heater entities."""
 
 
-@deprecated_class("WaterHeaterEntityDescription", breaks_in_ha_version="2026.1")
-class WaterHeaterEntityEntityDescription(
-    WaterHeaterEntityDescription, frozen_or_thawed=True
-):
-    """A (deprecated) class that describes water heater entities."""
+_DEPRECATED_WaterHeaterEntityEntityDescription = DeprecatedConstant(
+    WaterHeaterEntityDescription,
+    "WaterHeaterEntityDescription",
+    breaks_in_ha_version="2026.1",
+)
 
 
 CACHED_PROPERTIES_WITH_ATTR_ = {
@@ -414,3 +419,11 @@ async def async_service_temperature_set(
             kwargs[value] = temp
 
     await entity.async_set_temperature(**kwargs)
+
+
+# These can be removed if no deprecated constant are in this module anymore
+__getattr__ = ft.partial(check_if_deprecated_constant, module_globals=globals())
+__dir__ = ft.partial(
+    dir_with_deprecated_constants, module_globals_keys=[*globals().keys()]
+)
+__all__ = all_with_deprecated_constants(globals())
diff --git a/tests/components/water_heater/test_init.py b/tests/components/water_heater/test_init.py
index 09a0a711582..67f0c1de36e 100644
--- a/tests/components/water_heater/test_init.py
+++ b/tests/components/water_heater/test_init.py
@@ -2,19 +2,20 @@
 
 from __future__ import annotations
 
+from typing import Any
 from unittest import mock
 from unittest.mock import AsyncMock, MagicMock
 
 import pytest
 import voluptuous as vol
 
+from homeassistant.components import water_heater
 from homeassistant.components.water_heater import (
     DOMAIN,
     SERVICE_SET_OPERATION_MODE,
     SET_TEMPERATURE_SCHEMA,
     WaterHeaterEntity,
     WaterHeaterEntityDescription,
-    WaterHeaterEntityEntityDescription,
     WaterHeaterEntityFeature,
 )
 from homeassistant.config_entries import ConfigEntry
@@ -29,6 +30,7 @@ from tests.common import (
     MockModule,
     MockPlatform,
     async_mock_service,
+    import_and_test_deprecated_constant,
     mock_integration,
     mock_platform,
 )
@@ -209,12 +211,27 @@ async def test_operation_mode_validation(
 
 
 @pytest.mark.parametrize(
-    ("class_name", "expected_log"),
-    [(WaterHeaterEntityDescription, False), (WaterHeaterEntityEntityDescription, True)],
+    ("constant_name", "replacement_name", "replacement"),
+    [
+        (
+            "WaterHeaterEntityEntityDescription",
+            "WaterHeaterEntityDescription",
+            WaterHeaterEntityDescription,
+        ),
+    ],
 )
-async def test_deprecated_entity_description(
-    caplog: pytest.LogCaptureFixture, class_name: type, expected_log: bool
+def test_deprecated_constants(
+    caplog: pytest.LogCaptureFixture,
+    constant_name: str,
+    replacement_name: str,
+    replacement: Any,
 ) -> None:
-    """Test deprecated WaterHeaterEntityEntityDescription logs warning."""
-    class_name(key="test")
-    assert ("is a deprecated class" in caplog.text) is expected_log
+    """Test deprecated automation constants."""
+    import_and_test_deprecated_constant(
+        caplog,
+        water_heater,
+        constant_name,
+        replacement_name,
+        replacement,
+        "2026.1",
+    )