diff --git a/homeassistant/components/acaia/sensor.py b/homeassistant/components/acaia/sensor.py
index 49ee101b4a2..6e6ce6afcb8 100644
--- a/homeassistant/components/acaia/sensor.py
+++ b/homeassistant/components/acaia/sensor.py
@@ -14,7 +14,7 @@ from homeassistant.components.sensor import (
     SensorExtraStoredData,
     SensorStateClass,
 )
-from homeassistant.const import PERCENTAGE, UnitOfMass
+from homeassistant.const import PERCENTAGE, UnitOfMass, UnitOfVolumeFlowRate
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
@@ -49,6 +49,14 @@ SENSORS: tuple[AcaiaSensorEntityDescription, ...] = (
         ),
         value_fn=lambda scale: scale.weight,
     ),
+    AcaiaDynamicUnitSensorEntityDescription(
+        key="flow_rate",
+        device_class=SensorDeviceClass.VOLUME_FLOW_RATE,
+        native_unit_of_measurement=UnitOfVolumeFlowRate.MILLILITERS_PER_SECOND,
+        suggested_display_precision=1,
+        state_class=SensorStateClass.MEASUREMENT,
+        value_fn=lambda scale: scale.flow_rate,
+    ),
 )
 RESTORE_SENSORS: tuple[AcaiaSensorEntityDescription, ...] = (
     AcaiaSensorEntityDescription(
diff --git a/tests/components/acaia/conftest.py b/tests/components/acaia/conftest.py
index f1757a7f102..ff151f3b096 100644
--- a/tests/components/acaia/conftest.py
+++ b/tests/components/acaia/conftest.py
@@ -80,4 +80,5 @@ def mock_scale() -> Generator[MagicMock]:
         )
         scale.weight = 123.45
         scale.timer = 23
+        scale.flow_rate = 1.23
         yield scale
diff --git a/tests/components/acaia/snapshots/test_sensor.ambr b/tests/components/acaia/snapshots/test_sensor.ambr
index 46995877b4f..c3c8ce966ee 100644
--- a/tests/components/acaia/snapshots/test_sensor.ambr
+++ b/tests/components/acaia/snapshots/test_sensor.ambr
@@ -50,6 +50,60 @@
     'state': '42',
   })
 # ---
+# name: test_sensors[sensor.lunar_ddeeff_volume_flow_rate-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': dict({
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+    }),
+    'config_entry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'sensor',
+    'entity_category': None,
+    'entity_id': 'sensor.lunar_ddeeff_volume_flow_rate',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+      'sensor': dict({
+        'suggested_display_precision': 1,
+      }),
+    }),
+    'original_device_class': <SensorDeviceClass.VOLUME_FLOW_RATE: 'volume_flow_rate'>,
+    'original_icon': None,
+    'original_name': 'Volume flow rate',
+    'platform': 'acaia',
+    'previous_unique_id': None,
+    'supported_features': 0,
+    'translation_key': None,
+    'unique_id': 'aa:bb:cc:dd:ee:ff_flow_rate',
+    'unit_of_measurement': <UnitOfVolumeFlowRate.MILLILITERS_PER_SECOND: 'mL/s'>,
+  })
+# ---
+# name: test_sensors[sensor.lunar_ddeeff_volume_flow_rate-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'device_class': 'volume_flow_rate',
+      'friendly_name': 'LUNAR-DDEEFF Volume flow rate',
+      'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
+      'unit_of_measurement': <UnitOfVolumeFlowRate.MILLILITERS_PER_SECOND: 'mL/s'>,
+    }),
+    'context': <ANY>,
+    'entity_id': 'sensor.lunar_ddeeff_volume_flow_rate',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': '1.23',
+  })
+# ---
 # name: test_sensors[sensor.lunar_ddeeff_weight-entry]
   EntityRegistryEntrySnapshot({
     'aliases': set({