diff --git a/homeassistant/components/zwave_js/__init__.py b/homeassistant/components/zwave_js/__init__.py
index 93d511875af..798fd9fda2c 100644
--- a/homeassistant/components/zwave_js/__init__.py
+++ b/homeassistant/components/zwave_js/__init__.py
@@ -67,14 +67,17 @@ def register_node_in_dev_reg(
     node: ZwaveNode,
 ) -> None:
     """Register node in dev reg."""
-    device = dev_reg.async_get_or_create(
-        config_entry_id=entry.entry_id,
-        identifiers={get_device_id(client, node)},
-        sw_version=node.firmware_version,
-        name=node.name or node.device_config.description or f"Node {node.node_id}",
-        model=node.device_config.label,
-        manufacturer=node.device_config.manufacturer,
-    )
+    params = {
+        "config_entry_id": entry.entry_id,
+        "identifiers": {get_device_id(client, node)},
+        "sw_version": node.firmware_version,
+        "name": node.name or node.device_config.description or f"Node {node.node_id}",
+        "model": node.device_config.label,
+        "manufacturer": node.device_config.manufacturer,
+    }
+    if node.location:
+        params["suggested_area"] = node.location
+    device = dev_reg.async_get_or_create(**params)
 
     async_dispatcher_send(hass, EVENT_DEVICE_ADDED_TO_REGISTRY, device)
 
diff --git a/tests/components/zwave_js/common.py b/tests/components/zwave_js/common.py
index ebba16136a0..a5ee628754e 100644
--- a/tests/components/zwave_js/common.py
+++ b/tests/components/zwave_js/common.py
@@ -16,3 +16,6 @@ PROPERTY_DOOR_STATUS_BINARY_SENSOR = (
 CLIMATE_RADIO_THERMOSTAT_ENTITY = "climate.z_wave_thermostat"
 CLIMATE_DANFOSS_LC13_ENTITY = "climate.living_connect_z_thermostat"
 CLIMATE_FLOOR_THERMOSTAT_ENTITY = "climate.floor_thermostat"
+BULB_6_MULTI_COLOR_LIGHT_ENTITY = "light.bulb_6_multi_color"
+EATON_RF9640_ENTITY = "light.allloaddimmer"
+AEON_SMART_SWITCH_LIGHT_ENTITY = "light.smart_switch_6"
diff --git a/tests/components/zwave_js/conftest.py b/tests/components/zwave_js/conftest.py
index e0bc588abf4..72835fb17c1 100644
--- a/tests/components/zwave_js/conftest.py
+++ b/tests/components/zwave_js/conftest.py
@@ -10,9 +10,7 @@ from zwave_js_server.model.driver import Driver
 from zwave_js_server.model.node import Node
 from zwave_js_server.version import VersionInfo
 
-from homeassistant.helpers.device_registry import (
-    async_get_registry as async_get_device_registry,
-)
+from homeassistant.helpers.device_registry import async_get as async_get_device_registry
 
 from tests.common import MockConfigEntry, load_fixture
 
@@ -20,7 +18,7 @@ from tests.common import MockConfigEntry, load_fixture
 @pytest.fixture(name="device_registry")
 async def device_registry_fixture(hass):
     """Return the device registry."""
-    return await async_get_device_registry(hass)
+    return async_get_device_registry(hass)
 
 
 @pytest.fixture(name="controller_state", scope="session")
diff --git a/tests/components/zwave_js/test_init.py b/tests/components/zwave_js/test_init.py
index bff2ecd198c..2a2f249c361 100644
--- a/tests/components/zwave_js/test_init.py
+++ b/tests/components/zwave_js/test_init.py
@@ -18,7 +18,11 @@ from homeassistant.config_entries import (
 from homeassistant.const import STATE_UNAVAILABLE
 from homeassistant.helpers import device_registry, entity_registry
 
-from .common import AIR_TEMPERATURE_SENSOR, NOTIFICATION_MOTION_BINARY_SENSOR
+from .common import (
+    AIR_TEMPERATURE_SENSOR,
+    EATON_RF9640_ENTITY,
+    NOTIFICATION_MOTION_BINARY_SENSOR,
+)
 
 from tests.common import MockConfigEntry
 
@@ -467,3 +471,17 @@ async def test_removed_device(hass, client, multiple_devices, integration):
     )
     assert len(entity_entries) == 15
     assert dev_reg.async_get_device({get_device_id(client, old_node)}) is None
+
+
+async def test_suggested_area(hass, client, eaton_rf9640_dimmer):
+    """Test that suggested area works."""
+    dev_reg = device_registry.async_get(hass)
+    ent_reg = entity_registry.async_get(hass)
+
+    entry = MockConfigEntry(domain="zwave_js", data={"url": "ws://test.org"})
+    entry.add_to_hass(hass)
+    await hass.config_entries.async_setup(entry.entry_id)
+    await hass.async_block_till_done()
+
+    entity = ent_reg.async_get(EATON_RF9640_ENTITY)
+    assert dev_reg.async_get(entity.device_id).area_id is not None
diff --git a/tests/components/zwave_js/test_light.py b/tests/components/zwave_js/test_light.py
index ca36ea35393..d6d6c030d34 100644
--- a/tests/components/zwave_js/test_light.py
+++ b/tests/components/zwave_js/test_light.py
@@ -12,9 +12,11 @@ from homeassistant.components.light import (
 )
 from homeassistant.const import ATTR_SUPPORTED_FEATURES, STATE_OFF, STATE_ON
 
-BULB_6_MULTI_COLOR_LIGHT_ENTITY = "light.bulb_6_multi_color"
-EATON_RF9640_ENTITY = "light.allloaddimmer"
-AEON_SMART_SWITCH_LIGHT_ENTITY = "light.smart_switch_6"
+from .common import (
+    AEON_SMART_SWITCH_LIGHT_ENTITY,
+    BULB_6_MULTI_COLOR_LIGHT_ENTITY,
+    EATON_RF9640_ENTITY,
+)
 
 
 async def test_light(hass, client, bulb_6_multi_color, integration):
diff --git a/tests/fixtures/zwave_js/eaton_rf9640_dimmer_state.json b/tests/fixtures/zwave_js/eaton_rf9640_dimmer_state.json
index db815506a6b..b11d2bfd180 100644
--- a/tests/fixtures/zwave_js/eaton_rf9640_dimmer_state.json
+++ b/tests/fixtures/zwave_js/eaton_rf9640_dimmer_state.json
@@ -27,7 +27,7 @@
     "nodeType": 0,
     "roleType": 5,
     "name": "AllLoadDimmer",
-    "location": "",
+    "location": "LivingRoom",
     "deviceConfig": {
         "manufacturerId": 26,
         "manufacturer": "Eaton",