diff --git a/homeassistant/components/senz/__init__.py b/homeassistant/components/senz/__init__.py
index 6f68189e8bb..012b40f5def 100644
--- a/homeassistant/components/senz/__init__.py
+++ b/homeassistant/components/senz/__init__.py
@@ -6,14 +6,9 @@ import logging
 
 from aiosenz import SENZAPI, Thermostat
 from httpx import RequestError
-import voluptuous as vol
 
-from homeassistant.components.application_credentials import (
-    ClientCredential,
-    async_import_client_credential,
-)
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import CONF_CLIENT_ID, CONF_CLIENT_SECRET, Platform
+from homeassistant.const import Platform
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import ConfigEntryNotReady
 from homeassistant.helpers import (
@@ -21,7 +16,6 @@ from homeassistant.helpers import (
     config_validation as cv,
     httpx_client,
 )
-from homeassistant.helpers.typing import ConfigType
 from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
 
 from .api import SENZConfigEntryAuth
@@ -31,52 +25,13 @@ UPDATE_INTERVAL = timedelta(seconds=30)
 
 _LOGGER = logging.getLogger(__name__)
 
-CONFIG_SCHEMA = vol.Schema(
-    vol.All(
-        cv.deprecated(DOMAIN),
-        {
-            DOMAIN: vol.Schema(
-                {
-                    vol.Required(CONF_CLIENT_ID): cv.string,
-                    vol.Required(CONF_CLIENT_SECRET): cv.string,
-                }
-            )
-        },
-    ),
-    extra=vol.ALLOW_EXTRA,
-)
+CONFIG_SCHEMA = cv.removed(DOMAIN, raise_if_present=False)
 
 PLATFORMS = [Platform.CLIMATE]
 
 SENZDataUpdateCoordinator = DataUpdateCoordinator[dict[str, Thermostat]]
 
 
-async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
-    """Set up the SENZ OAuth2 configuration."""
-    hass.data[DOMAIN] = {}
-
-    if DOMAIN not in config:
-        return True
-
-    await async_import_client_credential(
-        hass,
-        DOMAIN,
-        ClientCredential(
-            config[DOMAIN][CONF_CLIENT_ID],
-            config[DOMAIN][CONF_CLIENT_SECRET],
-        ),
-    )
-    _LOGGER.warning(
-        "Configuration of SENZ integration in YAML is deprecated "
-        "and will be removed in a future release; Your existing OAuth "
-        "Application Credentials have been imported into the UI "
-        "automatically and can be safely removed from your "
-        "configuration.yaml file"
-    )
-
-    return True
-
-
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Set up SENZ from a config entry."""
     implementation = (
@@ -111,7 +66,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
 
     await coordinator.async_config_entry_first_refresh()
 
-    hass.data[DOMAIN][entry.entry_id] = coordinator
+    hass.data.setdefault(DOMAIN, {})[entry.entry_id] = coordinator
 
     await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)
 
diff --git a/tests/components/senz/test_config_flow.py b/tests/components/senz/test_config_flow.py
index 3906f2c0320..f0ed54ba932 100644
--- a/tests/components/senz/test_config_flow.py
+++ b/tests/components/senz/test_config_flow.py
@@ -3,10 +3,15 @@ from unittest.mock import patch
 
 from aiosenz import AUTHORIZATION_ENDPOINT, TOKEN_ENDPOINT
 
-from homeassistant import config_entries, setup
+from homeassistant import config_entries
+from homeassistant.components.application_credentials import (
+    ClientCredential,
+    async_import_client_credential,
+)
 from homeassistant.components.senz.const import DOMAIN
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import config_entry_oauth2_flow
+from homeassistant.setup import async_setup_component
 
 CLIENT_ID = "1234"
 CLIENT_SECRET = "5678"
@@ -19,12 +24,11 @@ async def test_full_flow(
     current_request_with_host,
 ) -> None:
     """Check full flow."""
-    assert await setup.async_setup_component(
-        hass,
-        "senz",
-        {
-            "senz": {"client_id": CLIENT_ID, "client_secret": CLIENT_SECRET},
-        },
+    await async_setup_component(hass, DOMAIN, {})
+    await hass.async_block_till_done()
+
+    await async_import_client_credential(
+        hass, DOMAIN, ClientCredential(CLIENT_ID, CLIENT_SECRET), "cred"
     )
 
     result = await hass.config_entries.flow.async_init(