diff --git a/homeassistant/components/vesync/__init__.py b/homeassistant/components/vesync/__init__.py
index ece7a2d7ad0..133713b3352 100644
--- a/homeassistant/components/vesync/__init__.py
+++ b/homeassistant/components/vesync/__init__.py
@@ -7,15 +7,18 @@ from pyvesync.utils.errors import VeSyncLoginError
 
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_PASSWORD, CONF_USERNAME, Platform
-from homeassistant.core import HomeAssistant, ServiceCall
+from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryAuthFailed
-from homeassistant.helpers import entity_registry as er
+from homeassistant.helpers import config_validation as cv, entity_registry as er
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
 from homeassistant.helpers.device_registry import DeviceEntry
-from homeassistant.helpers.dispatcher import async_dispatcher_send
+from homeassistant.helpers.typing import ConfigType
 
-from .const import DOMAIN, SERVICE_UPDATE_DEVS, VS_COORDINATOR, VS_MANAGER
+from .const import DOMAIN, VS_COORDINATOR, VS_MANAGER
 from .coordinator import VeSyncDataCoordinator
+from .services import async_setup_services
+
+CONFIG_SCHEMA = cv.config_entry_only_config_schema(DOMAIN)
 
 PLATFORMS = [
     Platform.BINARY_SENSOR,
@@ -32,6 +35,14 @@ PLATFORMS = [
 _LOGGER = logging.getLogger(__name__)
 
 
+async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
+    """Set up my integration."""
+
+    async_setup_services(hass)
+
+    return True
+
+
 async def async_setup_entry(hass: HomeAssistant, config_entry: ConfigEntry) -> bool:
     """Set up Vesync as config entry."""
     username = config_entry.data[CONF_USERNAME]
@@ -62,22 +73,6 @@ async def async_setup_entry(hass: HomeAssistant, config_entry: ConfigEntry) -> b
 
     await hass.config_entries.async_forward_entry_setups(config_entry, PLATFORMS)
 
-    async def async_new_device_discovery(service: ServiceCall) -> None:
-        """Discover and add new devices."""
-        manager = hass.data[DOMAIN][VS_MANAGER]
-        known_devices = list(manager.devices)
-        await manager.get_devices()
-        new_devices = [
-            device for device in manager.devices if device not in known_devices
-        ]
-
-        if new_devices:
-            async_dispatcher_send(hass, "vesync_new_devices", new_devices)
-
-    hass.services.async_register(
-        DOMAIN, SERVICE_UPDATE_DEVS, async_new_device_discovery
-    )
-
     return True
 
 
diff --git a/homeassistant/components/vesync/services.py b/homeassistant/components/vesync/services.py
new file mode 100644
index 00000000000..c1a9bc5e638
--- /dev/null
+++ b/homeassistant/components/vesync/services.py
@@ -0,0 +1,36 @@
+"""Support for VeSync Services."""
+
+from homeassistant.config_entries import ConfigEntryState
+from homeassistant.core import HomeAssistant, ServiceCall, callback
+from homeassistant.exceptions import ServiceValidationError
+from homeassistant.helpers.dispatcher import async_dispatcher_send
+
+from .const import DOMAIN, SERVICE_UPDATE_DEVS, VS_DEVICES, VS_DISCOVERY, VS_MANAGER
+
+
+@callback
+def async_setup_services(hass: HomeAssistant) -> None:
+    """Handle for services."""
+
+    hass.services.async_register(
+        DOMAIN, SERVICE_UPDATE_DEVS, async_new_device_discovery
+    )
+
+
+async def async_new_device_discovery(call: ServiceCall) -> None:
+    """Discover and add new devices."""
+
+    entries = call.hass.config_entries.async_entries(DOMAIN)
+    entry = entries[0] if entries else None
+
+    if not entry:
+        raise ServiceValidationError("Entry not found")
+    if entry.state is not ConfigEntryState.LOADED:
+        raise ServiceValidationError("Entry not loaded")
+    manager = call.hass.data[DOMAIN][VS_MANAGER]
+    known_devices = list(manager.devices)
+    await manager.get_devices()
+    new_devices = [device for device in manager.devices if device not in known_devices]
+
+    if new_devices:
+        async_dispatcher_send(call.hass, VS_DISCOVERY.format(VS_DEVICES), new_devices)
diff --git a/tests/components/vesync/test_init.py b/tests/components/vesync/test_init.py
index 758ae61858a..97d27fe221c 100644
--- a/tests/components/vesync/test_init.py
+++ b/tests/components/vesync/test_init.py
@@ -6,7 +6,6 @@ from pyvesync import VeSync
 from pyvesync.utils.errors import VeSyncLoginError
 
 from homeassistant.components.vesync import (
-    SERVICE_UPDATE_DEVS,
     async_remove_config_entry_device,
     async_setup_entry,
 )
@@ -91,34 +90,6 @@ async def test_async_setup_entry__loads_fans(
     assert list(hass.data[DOMAIN][VS_MANAGER].devices) == [fan]
 
 
-async def test_async_new_device_discovery(
-    hass: HomeAssistant, config_entry: ConfigEntry, manager: VeSync, fan, humidifier
-) -> None:
-    """Test new device discovery."""
-
-    assert await hass.config_entries.async_setup(config_entry.entry_id)
-    # Assert platforms loaded
-    await hass.async_block_till_done()
-    assert config_entry.state is ConfigEntryState.LOADED
-    assert not hass.data[DOMAIN][VS_MANAGER].devices
-
-    # Mock discovery of new fan which would get added to VS_DEVICES.
-    manager._dev_list["fans"].append(fan)
-    await hass.services.async_call(DOMAIN, SERVICE_UPDATE_DEVS, {}, blocking=True)
-
-    assert manager.get_devices.call_count == 1
-    assert hass.data[DOMAIN][VS_MANAGER] == manager
-    assert list(hass.data[DOMAIN][VS_MANAGER].devices) == [fan]
-
-    # Mock discovery of new humidifier which would invoke discovery in all platforms.
-    manager._dev_list["humidifiers"].append(humidifier)
-    await hass.services.async_call(DOMAIN, SERVICE_UPDATE_DEVS, {}, blocking=True)
-
-    assert manager.get_devices.call_count == 2
-    assert hass.data[DOMAIN][VS_MANAGER] == manager
-    assert list(hass.data[DOMAIN][VS_MANAGER].devices) == [fan, humidifier]
-
-
 async def test_migrate_config_entry(
     hass: HomeAssistant,
     switch_old_id_config_entry: MockConfigEntry,
diff --git a/tests/components/vesync/test_services.py b/tests/components/vesync/test_services.py
new file mode 100644
index 00000000000..6508a49f311
--- /dev/null
+++ b/tests/components/vesync/test_services.py
@@ -0,0 +1,86 @@
+"""Tests for VeSync services."""
+
+from unittest.mock import AsyncMock
+
+import pytest
+from pyvesync import VeSync
+
+from homeassistant.components.vesync import async_setup
+from homeassistant.components.vesync.const import (
+    DOMAIN,
+    SERVICE_UPDATE_DEVS,
+    VS_MANAGER,
+)
+from homeassistant.config_entries import ConfigEntry, ConfigEntryState
+from homeassistant.core import HomeAssistant
+from homeassistant.exceptions import ServiceValidationError
+from homeassistant.helpers import entity_registry as er
+
+
+async def test_async_new_device_discovery_no_entry(
+    hass: HomeAssistant,
+) -> None:
+    """Service should raise when no config entry exists."""
+
+    # Ensure the integration is set up so the service is registered
+    assert await async_setup(hass, {})
+
+    # No entries for the domain, service should raise
+    with pytest.raises(ServiceValidationError, match="Entry not found"):
+        await hass.services.async_call("vesync", SERVICE_UPDATE_DEVS, {}, blocking=True)
+
+
+async def test_async_new_device_discovery_entry_not_loaded(
+    hass: HomeAssistant, config_entry: ConfigEntry
+) -> None:
+    """Service should raise when entry exists but is not loaded."""
+
+    # Add a config entry but do not set it up (state is not LOADED)
+    assert config_entry.state is ConfigEntryState.NOT_LOADED
+    # Ensure the integration is set up so the service is registered
+    assert await async_setup(hass, {})
+
+    with pytest.raises(ServiceValidationError, match="Entry not loaded"):
+        await hass.services.async_call("vesync", SERVICE_UPDATE_DEVS, {}, blocking=True)
+
+
+async def test_async_new_device_discovery(
+    hass: HomeAssistant,
+    config_entry: ConfigEntry,
+    manager: VeSync,
+    fan,
+    entity_registry: er.EntityRegistry,
+) -> None:
+    """Test new device discovery."""
+
+    # Entry should not be set up yet; we'll install a fan before setup
+    assert config_entry.state is ConfigEntryState.NOT_LOADED
+
+    # Set up the config entry (no devices initially)
+    assert await hass.config_entries.async_setup(config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    assert config_entry.state is ConfigEntryState.LOADED
+    assert not hass.data[DOMAIN][VS_MANAGER].devices
+
+    # Simulate the manager discovering a new fan when get_devices is called
+    manager.get_devices = AsyncMock(
+        side_effect=lambda: manager._dev_list["fans"].append(fan)
+    )
+
+    # Call the service that should trigger discovery and platform setup
+    await hass.services.async_call(DOMAIN, SERVICE_UPDATE_DEVS, {}, blocking=True)
+    await hass.async_block_till_done()
+
+    assert manager.get_devices.call_count == 1
+
+    # Verify an entity for the new fan was created in Home Assistant
+    fan_entry = next(
+        (
+            e
+            for e in entity_registry.entities.values()
+            if e.unique_id == fan.cid and e.domain == "fan"
+        ),
+        None,
+    )
+    assert fan_entry is not None