diff --git a/tests/components/opentherm_gw/conftest.py b/tests/components/opentherm_gw/conftest.py
index 057f47a169df05cfcc002e3e048ec59731a9b5d4..9c90c74b04bc3c48d4a7e09648991c9e03dafbbe 100644
--- a/tests/components/opentherm_gw/conftest.py
+++ b/tests/components/opentherm_gw/conftest.py
@@ -6,8 +6,14 @@ from unittest.mock import AsyncMock, MagicMock, patch
 from pyotgw.vars import OTGW, OTGW_ABOUT
 import pytest
 
+from homeassistant.components.opentherm_gw import DOMAIN
+from homeassistant.const import CONF_DEVICE, CONF_ID, CONF_NAME
+
+from tests.common import MockConfigEntry
+
 VERSION_TEST = "4.2.5"
 MINIMAL_STATUS = {OTGW: {OTGW_ABOUT: f"OpenTherm Gateway {VERSION_TEST}"}}
+MOCK_GATEWAY_ID = "mock_gateway"
 
 
 @pytest.fixture
@@ -39,3 +45,18 @@ def mock_pyotgw() -> Generator[MagicMock]:
         ),
     ):
         yield mock_gateway
+
+
+@pytest.fixture
+def mock_config_entry() -> MockConfigEntry:
+    """Mock an OpenTherm Gateway config entry."""
+    return MockConfigEntry(
+        domain=DOMAIN,
+        title="Mock Gateway",
+        data={
+            CONF_NAME: "Mock Gateway",
+            CONF_DEVICE: "/dev/null",
+            CONF_ID: MOCK_GATEWAY_ID,
+        },
+        options={},
+    )
diff --git a/tests/components/opentherm_gw/test_init.py b/tests/components/opentherm_gw/test_init.py
index 2116967d7206583c03dee9b806138bfcbb51fcd5..4085e25c614d776520dc13c0f0dd47bf794fbacd 100644
--- a/tests/components/opentherm_gw/test_init.py
+++ b/tests/components/opentherm_gw/test_init.py
@@ -8,38 +8,28 @@ from homeassistant.components.opentherm_gw.const import (
     DOMAIN,
     OpenThermDeviceIdentifier,
 )
-from homeassistant.const import CONF_DEVICE, CONF_ID, CONF_NAME
+from homeassistant.const import CONF_ID
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import device_registry as dr, entity_registry as er
 
-from .conftest import VERSION_TEST
+from .conftest import MOCK_GATEWAY_ID, VERSION_TEST
 
 from tests.common import MockConfigEntry
 
 VERSION_NEW = "4.2.8.1"
 MINIMAL_STATUS_UPD = {OTGW: {OTGW_ABOUT: f"OpenTherm Gateway {VERSION_NEW}"}}
-MOCK_GATEWAY_ID = "mock_gateway"
-MOCK_CONFIG_ENTRY = MockConfigEntry(
-    domain=DOMAIN,
-    title="Mock Gateway",
-    data={
-        CONF_NAME: "Mock Gateway",
-        CONF_DEVICE: "/dev/null",
-        CONF_ID: MOCK_GATEWAY_ID,
-    },
-    options={},
-)
 
 
 async def test_device_registry_insert(
     hass: HomeAssistant,
     device_registry: dr.DeviceRegistry,
+    mock_config_entry: MockConfigEntry,
     mock_pyotgw: MagicMock,
 ) -> None:
     """Test that the device registry is initialized correctly."""
-    MOCK_CONFIG_ENTRY.add_to_hass(hass)
+    mock_config_entry.add_to_hass(hass)
 
-    await hass.config_entries.async_setup(MOCK_CONFIG_ENTRY.entry_id)
+    await hass.config_entries.async_setup(mock_config_entry.entry_id)
     await hass.async_block_till_done()
 
     gw_dev = device_registry.async_get_device(
@@ -52,13 +42,14 @@ async def test_device_registry_insert(
 async def test_device_registry_update(
     hass: HomeAssistant,
     device_registry: dr.DeviceRegistry,
+    mock_config_entry: MockConfigEntry,
     mock_pyotgw: MagicMock,
 ) -> None:
     """Test that the device registry is updated correctly."""
-    MOCK_CONFIG_ENTRY.add_to_hass(hass)
+    mock_config_entry.add_to_hass(hass)
 
     device_registry.async_get_or_create(
-        config_entry_id=MOCK_CONFIG_ENTRY.entry_id,
+        config_entry_id=mock_config_entry.entry_id,
         identifiers={
             (DOMAIN, f"{MOCK_GATEWAY_ID}-{OpenThermDeviceIdentifier.GATEWAY}")
         },
@@ -70,7 +61,7 @@ async def test_device_registry_update(
 
     mock_pyotgw.return_value.connect.return_value = MINIMAL_STATUS_UPD
 
-    await hass.config_entries.async_setup(MOCK_CONFIG_ENTRY.entry_id)
+    await hass.config_entries.async_setup(mock_config_entry.entry_id)
     await hass.async_block_till_done()
 
     gw_dev = device_registry.async_get_device(
@@ -84,13 +75,14 @@ async def test_device_registry_update(
 async def test_device_migration(
     hass: HomeAssistant,
     device_registry: dr.DeviceRegistry,
+    mock_config_entry: MockConfigEntry,
     mock_pyotgw: MagicMock,
 ) -> None:
     """Test that the device registry is updated correctly."""
-    MOCK_CONFIG_ENTRY.add_to_hass(hass)
+    mock_config_entry.add_to_hass(hass)
 
     device_registry.async_get_or_create(
-        config_entry_id=MOCK_CONFIG_ENTRY.entry_id,
+        config_entry_id=mock_config_entry.entry_id,
         identifiers={
             (DOMAIN, MOCK_GATEWAY_ID),
         },
@@ -100,7 +92,7 @@ async def test_device_migration(
         sw_version=VERSION_TEST,
     )
 
-    await hass.config_entries.async_setup(MOCK_CONFIG_ENTRY.entry_id)
+    await hass.config_entries.async_setup(mock_config_entry.entry_id)
     await hass.async_block_till_done()
 
     assert (
@@ -136,22 +128,23 @@ async def test_device_migration(
 async def test_climate_entity_migration(
     hass: HomeAssistant,
     entity_registry: er.EntityRegistry,
+    mock_config_entry: MockConfigEntry,
     mock_pyotgw: MagicMock,
 ) -> None:
     """Test that the climate entity unique_id gets migrated correctly."""
-    MOCK_CONFIG_ENTRY.add_to_hass(hass)
+    mock_config_entry.add_to_hass(hass)
     entry = entity_registry.async_get_or_create(
         domain="climate",
         platform="opentherm_gw",
-        unique_id=MOCK_CONFIG_ENTRY.data[CONF_ID],
+        unique_id=mock_config_entry.data[CONF_ID],
     )
 
-    await hass.config_entries.async_setup(MOCK_CONFIG_ENTRY.entry_id)
+    await hass.config_entries.async_setup(mock_config_entry.entry_id)
     await hass.async_block_till_done()
 
     updated_entry = entity_registry.async_get(entry.entity_id)
     assert updated_entry is not None
     assert (
         updated_entry.unique_id
-        == f"{MOCK_CONFIG_ENTRY.data[CONF_ID]}-{OpenThermDeviceIdentifier.THERMOSTAT}-thermostat_entity"
+        == f"{mock_config_entry.data[CONF_ID]}-{OpenThermDeviceIdentifier.THERMOSTAT}-thermostat_entity"
     )