diff --git a/homeassistant/components/blebox/sensor.py b/homeassistant/components/blebox/sensor.py
index 2642bfd0139..fa11f6d6680 100644
--- a/homeassistant/components/blebox/sensor.py
+++ b/homeassistant/components/blebox/sensor.py
@@ -14,13 +14,13 @@ from homeassistant.const import (
     CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,
     LIGHT_LUX,
     PERCENTAGE,
-    POWER_VOLT_AMPERE_REACTIVE,
     UnitOfApparentPower,
     UnitOfElectricCurrent,
     UnitOfElectricPotential,
     UnitOfEnergy,
     UnitOfFrequency,
     UnitOfPower,
+    UnitOfReactivePower,
     UnitOfSpeed,
     UnitOfTemperature,
 )
@@ -85,7 +85,7 @@ SENSOR_TYPES = (
     SensorEntityDescription(
         key="reactivePower",
         device_class=SensorDeviceClass.POWER,
-        native_unit_of_measurement=POWER_VOLT_AMPERE_REACTIVE,
+        native_unit_of_measurement=UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
     ),
     SensorEntityDescription(
         key="activePower",
diff --git a/homeassistant/components/fronius/sensor.py b/homeassistant/components/fronius/sensor.py
index 31f080c1f51..c8a840b1c2c 100644
--- a/homeassistant/components/fronius/sensor.py
+++ b/homeassistant/components/fronius/sensor.py
@@ -14,7 +14,6 @@ from homeassistant.components.sensor import (
 )
 from homeassistant.const import (
     PERCENTAGE,
-    POWER_VOLT_AMPERE_REACTIVE,
     EntityCategory,
     UnitOfApparentPower,
     UnitOfElectricCurrent,
@@ -22,6 +21,7 @@ from homeassistant.const import (
     UnitOfEnergy,
     UnitOfFrequency,
     UnitOfPower,
+    UnitOfReactivePower,
     UnitOfTemperature,
 )
 from homeassistant.core import HomeAssistant, callback
@@ -381,28 +381,28 @@ METER_ENTITY_DESCRIPTIONS: list[FroniusSensorEntityDescription] = [
     ),
     FroniusSensorEntityDescription(
         key="power_reactive_phase_1",
-        native_unit_of_measurement=POWER_VOLT_AMPERE_REACTIVE,
+        native_unit_of_measurement=UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
         device_class=SensorDeviceClass.REACTIVE_POWER,
         state_class=SensorStateClass.MEASUREMENT,
         entity_registry_enabled_default=False,
     ),
     FroniusSensorEntityDescription(
         key="power_reactive_phase_2",
-        native_unit_of_measurement=POWER_VOLT_AMPERE_REACTIVE,
+        native_unit_of_measurement=UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
         device_class=SensorDeviceClass.REACTIVE_POWER,
         state_class=SensorStateClass.MEASUREMENT,
         entity_registry_enabled_default=False,
     ),
     FroniusSensorEntityDescription(
         key="power_reactive_phase_3",
-        native_unit_of_measurement=POWER_VOLT_AMPERE_REACTIVE,
+        native_unit_of_measurement=UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
         device_class=SensorDeviceClass.REACTIVE_POWER,
         state_class=SensorStateClass.MEASUREMENT,
         entity_registry_enabled_default=False,
     ),
     FroniusSensorEntityDescription(
         key="power_reactive",
-        native_unit_of_measurement=POWER_VOLT_AMPERE_REACTIVE,
+        native_unit_of_measurement=UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
         device_class=SensorDeviceClass.REACTIVE_POWER,
         state_class=SensorStateClass.MEASUREMENT,
         entity_registry_enabled_default=False,
diff --git a/homeassistant/components/goodwe/sensor.py b/homeassistant/components/goodwe/sensor.py
index 795b26a0c9f..03912c9a1ec 100644
--- a/homeassistant/components/goodwe/sensor.py
+++ b/homeassistant/components/goodwe/sensor.py
@@ -20,7 +20,6 @@ from homeassistant.components.sensor import (
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     PERCENTAGE,
-    POWER_VOLT_AMPERE_REACTIVE,
     EntityCategory,
     UnitOfApparentPower,
     UnitOfElectricCurrent,
@@ -28,6 +27,7 @@ from homeassistant.const import (
     UnitOfEnergy,
     UnitOfFrequency,
     UnitOfPower,
+    UnitOfReactivePower,
     UnitOfTemperature,
     UnitOfTime,
 )
@@ -126,7 +126,7 @@ _DESCRIPTIONS: dict[str, GoodweSensorEntityDescription] = {
         key="var",
         device_class=SensorDeviceClass.REACTIVE_POWER,
         state_class=SensorStateClass.MEASUREMENT,
-        native_unit_of_measurement=POWER_VOLT_AMPERE_REACTIVE,
+        native_unit_of_measurement=UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
         entity_registry_enabled_default=False,
     ),
     "C": GoodweSensorEntityDescription(
diff --git a/homeassistant/components/homewizard/sensor.py b/homeassistant/components/homewizard/sensor.py
index 1f77af110b0..c5cf0bc64c7 100644
--- a/homeassistant/components/homewizard/sensor.py
+++ b/homeassistant/components/homewizard/sensor.py
@@ -18,7 +18,6 @@ from homeassistant.components.sensor import (
 from homeassistant.const import (
     ATTR_VIA_DEVICE,
     PERCENTAGE,
-    POWER_VOLT_AMPERE_REACTIVE,
     EntityCategory,
     Platform,
     UnitOfApparentPower,
@@ -27,6 +26,7 @@ from homeassistant.const import (
     UnitOfEnergy,
     UnitOfFrequency,
     UnitOfPower,
+    UnitOfReactivePower,
     UnitOfVolume,
 )
 from homeassistant.core import HomeAssistant
@@ -404,7 +404,7 @@ SENSORS: Final[tuple[HomeWizardSensorEntityDescription, ...]] = (
     ),
     HomeWizardSensorEntityDescription(
         key="active_reactive_power_var",
-        native_unit_of_measurement=POWER_VOLT_AMPERE_REACTIVE,
+        native_unit_of_measurement=UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
         device_class=SensorDeviceClass.REACTIVE_POWER,
         state_class=SensorStateClass.MEASUREMENT,
         entity_registry_enabled_default=False,
@@ -415,7 +415,7 @@ SENSORS: Final[tuple[HomeWizardSensorEntityDescription, ...]] = (
         key="active_reactive_power_l1_var",
         translation_key="active_reactive_power_phase_var",
         translation_placeholders={"phase": "1"},
-        native_unit_of_measurement=POWER_VOLT_AMPERE_REACTIVE,
+        native_unit_of_measurement=UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
         device_class=SensorDeviceClass.REACTIVE_POWER,
         state_class=SensorStateClass.MEASUREMENT,
         entity_registry_enabled_default=False,
@@ -426,7 +426,7 @@ SENSORS: Final[tuple[HomeWizardSensorEntityDescription, ...]] = (
         key="active_reactive_power_l2_var",
         translation_key="active_reactive_power_phase_var",
         translation_placeholders={"phase": "2"},
-        native_unit_of_measurement=POWER_VOLT_AMPERE_REACTIVE,
+        native_unit_of_measurement=UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
         device_class=SensorDeviceClass.REACTIVE_POWER,
         state_class=SensorStateClass.MEASUREMENT,
         entity_registry_enabled_default=False,
@@ -437,7 +437,7 @@ SENSORS: Final[tuple[HomeWizardSensorEntityDescription, ...]] = (
         key="active_reactive_power_l3_var",
         translation_key="active_reactive_power_phase_var",
         translation_placeholders={"phase": "3"},
-        native_unit_of_measurement=POWER_VOLT_AMPERE_REACTIVE,
+        native_unit_of_measurement=UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
         device_class=SensorDeviceClass.REACTIVE_POWER,
         state_class=SensorStateClass.MEASUREMENT,
         entity_registry_enabled_default=False,
diff --git a/homeassistant/components/iotawatt/const.py b/homeassistant/components/iotawatt/const.py
index de008388f62..278030d4f10 100644
--- a/homeassistant/components/iotawatt/const.py
+++ b/homeassistant/components/iotawatt/const.py
@@ -7,7 +7,6 @@ import json
 import httpx
 
 DOMAIN = "iotawatt"
-VOLT_AMPERE_REACTIVE = "VAR"
 VOLT_AMPERE_REACTIVE_HOURS = "VARh"
 
 CONNECTION_ERRORS = (KeyError, json.JSONDecodeError, httpx.HTTPError)
diff --git a/homeassistant/components/iotawatt/sensor.py b/homeassistant/components/iotawatt/sensor.py
index c9af588c160..e0328ea9d58 100644
--- a/homeassistant/components/iotawatt/sensor.py
+++ b/homeassistant/components/iotawatt/sensor.py
@@ -23,6 +23,7 @@ from homeassistant.const import (
     UnitOfEnergy,
     UnitOfFrequency,
     UnitOfPower,
+    UnitOfReactivePower,
 )
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers import device_registry as dr, entity_registry as er
@@ -31,7 +32,7 @@ from homeassistant.helpers.typing import StateType
 from homeassistant.helpers.update_coordinator import CoordinatorEntity
 from homeassistant.util import dt as dt_util
 
-from .const import DOMAIN, VOLT_AMPERE_REACTIVE, VOLT_AMPERE_REACTIVE_HOURS
+from .const import DOMAIN, VOLT_AMPERE_REACTIVE_HOURS
 from .coordinator import IotawattUpdater
 
 _LOGGER = logging.getLogger(__name__)
@@ -89,7 +90,7 @@ ENTITY_DESCRIPTION_KEY_MAP: dict[str, IotaWattSensorEntityDescription] = {
     ),
     "VAR": IotaWattSensorEntityDescription(
         key="VAR",
-        native_unit_of_measurement=VOLT_AMPERE_REACTIVE,
+        native_unit_of_measurement=UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
         state_class=SensorStateClass.MEASUREMENT,
         icon="mdi:flash",
         entity_registry_enabled_default=False,
diff --git a/homeassistant/components/isy994/const.py b/homeassistant/components/isy994/const.py
index 85ecafd6490..57b30c88075 100644
--- a/homeassistant/components/isy994/const.py
+++ b/homeassistant/components/isy994/const.py
@@ -23,7 +23,6 @@ from homeassistant.const import (
     DEGREE,
     LIGHT_LUX,
     PERCENTAGE,
-    POWER_VOLT_AMPERE_REACTIVE,
     REVOLUTIONS_PER_MINUTE,
     SERVICE_LOCK,
     SERVICE_UNLOCK,
@@ -50,6 +49,7 @@ from homeassistant.const import (
     UnitOfMass,
     UnitOfPower,
     UnitOfPressure,
+    UnitOfReactivePower,
     UnitOfSoundPressure,
     UnitOfSpeed,
     UnitOfTemperature,
@@ -438,7 +438,7 @@ UOM_FRIENDLY_NAME = {
     "133": UnitOfFrequency.KILOHERTZ,
     "134": f"{UnitOfLength.METERS}/{UnitOfTime.SECONDS}²",
     "135": UnitOfApparentPower.VOLT_AMPERE,  # Volt-Amp
-    "136": POWER_VOLT_AMPERE_REACTIVE,  # VAR = Volt-Amp Reactive
+    "136": UnitOfReactivePower.VOLT_AMPERE_REACTIVE,  # VAR = Volt-Amp Reactive
     "137": "",  # NTP DateTime - Number of seconds since 1900
     "138": UnitOfPressure.PSI,
     "139": DEGREE,  # Degree 0-360
diff --git a/homeassistant/components/mysensors/sensor.py b/homeassistant/components/mysensors/sensor.py
index 9c6c0de89e6..82e6833f664 100644
--- a/homeassistant/components/mysensors/sensor.py
+++ b/homeassistant/components/mysensors/sensor.py
@@ -28,6 +28,7 @@ from homeassistant.const import (
     UnitOfLength,
     UnitOfMass,
     UnitOfPower,
+    UnitOfReactivePower,
     UnitOfSoundPressure,
     UnitOfTemperature,
     UnitOfVolume,
@@ -195,7 +196,7 @@ SENSORS: dict[str, SensorEntityDescription] = {
     ),
     "V_VAR": SensorEntityDescription(
         key="V_VAR",
-        native_unit_of_measurement="var",
+        native_unit_of_measurement=UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
     ),
     "V_VA": SensorEntityDescription(
         key="V_VA",
diff --git a/homeassistant/components/number/const.py b/homeassistant/components/number/const.py
index 6343c3a599f..ad95c9b5358 100644
--- a/homeassistant/components/number/const.py
+++ b/homeassistant/components/number/const.py
@@ -14,7 +14,6 @@ from homeassistant.const import (
     CONCENTRATION_PARTS_PER_MILLION,
     LIGHT_LUX,
     PERCENTAGE,
-    POWER_VOLT_AMPERE_REACTIVE,
     SIGNAL_STRENGTH_DECIBELS,
     SIGNAL_STRENGTH_DECIBELS_MILLIWATT,
     UnitOfApparentPower,
@@ -31,6 +30,7 @@ from homeassistant.const import (
     UnitOfPower,
     UnitOfPrecipitationDepth,
     UnitOfPressure,
+    UnitOfReactivePower,
     UnitOfSoundPressure,
     UnitOfSpeed,
     UnitOfTemperature,
@@ -468,7 +468,7 @@ DEVICE_CLASS_UNITS: dict[NumberDeviceClass, set[type[StrEnum] | str | None]] = {
     NumberDeviceClass.PRECIPITATION: set(UnitOfPrecipitationDepth),
     NumberDeviceClass.PRECIPITATION_INTENSITY: set(UnitOfVolumetricFlux),
     NumberDeviceClass.PRESSURE: set(UnitOfPressure),
-    NumberDeviceClass.REACTIVE_POWER: {POWER_VOLT_AMPERE_REACTIVE},
+    NumberDeviceClass.REACTIVE_POWER: {UnitOfReactivePower.VOLT_AMPERE_REACTIVE},
     NumberDeviceClass.SIGNAL_STRENGTH: {
         SIGNAL_STRENGTH_DECIBELS,
         SIGNAL_STRENGTH_DECIBELS_MILLIWATT,
diff --git a/homeassistant/components/sensor/const.py b/homeassistant/components/sensor/const.py
index 5acf2ecef23..8f63e346caf 100644
--- a/homeassistant/components/sensor/const.py
+++ b/homeassistant/components/sensor/const.py
@@ -14,7 +14,6 @@ from homeassistant.const import (
     CONCENTRATION_PARTS_PER_MILLION,
     LIGHT_LUX,
     PERCENTAGE,
-    POWER_VOLT_AMPERE_REACTIVE,
     SIGNAL_STRENGTH_DECIBELS,
     SIGNAL_STRENGTH_DECIBELS_MILLIWATT,
     UnitOfApparentPower,
@@ -31,6 +30,7 @@ from homeassistant.const import (
     UnitOfPower,
     UnitOfPrecipitationDepth,
     UnitOfPressure,
+    UnitOfReactivePower,
     UnitOfSoundPressure,
     UnitOfSpeed,
     UnitOfTemperature,
@@ -563,7 +563,7 @@ DEVICE_CLASS_UNITS: dict[SensorDeviceClass, set[type[StrEnum] | str | None]] = {
     SensorDeviceClass.PRECIPITATION: set(UnitOfPrecipitationDepth),
     SensorDeviceClass.PRECIPITATION_INTENSITY: set(UnitOfVolumetricFlux),
     SensorDeviceClass.PRESSURE: set(UnitOfPressure),
-    SensorDeviceClass.REACTIVE_POWER: {POWER_VOLT_AMPERE_REACTIVE},
+    SensorDeviceClass.REACTIVE_POWER: {UnitOfReactivePower.VOLT_AMPERE_REACTIVE},
     SensorDeviceClass.SIGNAL_STRENGTH: {
         SIGNAL_STRENGTH_DECIBELS,
         SIGNAL_STRENGTH_DECIBELS_MILLIWATT,
diff --git a/homeassistant/components/sma/sensor.py b/homeassistant/components/sma/sensor.py
index 9d580a76d9e..302c4f6b197 100644
--- a/homeassistant/components/sma/sensor.py
+++ b/homeassistant/components/sma/sensor.py
@@ -15,7 +15,6 @@ from homeassistant.components.sensor import (
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     PERCENTAGE,
-    POWER_VOLT_AMPERE_REACTIVE,
     EntityCategory,
     UnitOfApparentPower,
     UnitOfElectricCurrent,
@@ -23,6 +22,7 @@ from homeassistant.const import (
     UnitOfEnergy,
     UnitOfFrequency,
     UnitOfPower,
+    UnitOfReactivePower,
     UnitOfTemperature,
 )
 from homeassistant.core import HomeAssistant
@@ -204,7 +204,7 @@ SENSOR_ENTITIES: dict[str, SensorEntityDescription] = {
     "grid_reactive_power": SensorEntityDescription(
         key="grid_reactive_power",
         name="Grid Reactive Power",
-        native_unit_of_measurement=POWER_VOLT_AMPERE_REACTIVE,
+        native_unit_of_measurement=UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
         state_class=SensorStateClass.MEASUREMENT,
         device_class=SensorDeviceClass.REACTIVE_POWER,
         entity_registry_enabled_default=False,
@@ -212,7 +212,7 @@ SENSOR_ENTITIES: dict[str, SensorEntityDescription] = {
     "grid_reactive_power_l1": SensorEntityDescription(
         key="grid_reactive_power_l1",
         name="Grid Reactive Power L1",
-        native_unit_of_measurement=POWER_VOLT_AMPERE_REACTIVE,
+        native_unit_of_measurement=UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
         state_class=SensorStateClass.MEASUREMENT,
         device_class=SensorDeviceClass.REACTIVE_POWER,
         entity_registry_enabled_default=False,
@@ -220,7 +220,7 @@ SENSOR_ENTITIES: dict[str, SensorEntityDescription] = {
     "grid_reactive_power_l2": SensorEntityDescription(
         key="grid_reactive_power_l2",
         name="Grid Reactive Power L2",
-        native_unit_of_measurement=POWER_VOLT_AMPERE_REACTIVE,
+        native_unit_of_measurement=UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
         state_class=SensorStateClass.MEASUREMENT,
         device_class=SensorDeviceClass.REACTIVE_POWER,
         entity_registry_enabled_default=False,
@@ -228,7 +228,7 @@ SENSOR_ENTITIES: dict[str, SensorEntityDescription] = {
     "grid_reactive_power_l3": SensorEntityDescription(
         key="grid_reactive_power_l3",
         name="Grid Reactive Power L3",
-        native_unit_of_measurement=POWER_VOLT_AMPERE_REACTIVE,
+        native_unit_of_measurement=UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
         state_class=SensorStateClass.MEASUREMENT,
         device_class=SensorDeviceClass.REACTIVE_POWER,
         entity_registry_enabled_default=False,
diff --git a/homeassistant/components/tasmota/sensor.py b/homeassistant/components/tasmota/sensor.py
index e87ff88092e..30649fa38bd 100644
--- a/homeassistant/components/tasmota/sensor.py
+++ b/homeassistant/components/tasmota/sensor.py
@@ -22,7 +22,6 @@ from homeassistant.const import (
     CONCENTRATION_PARTS_PER_MILLION,
     LIGHT_LUX,
     PERCENTAGE,
-    POWER_VOLT_AMPERE_REACTIVE,
     SIGNAL_STRENGTH_DECIBELS,
     SIGNAL_STRENGTH_DECIBELS_MILLIWATT,
     EntityCategory,
@@ -35,6 +34,7 @@ from homeassistant.const import (
     UnitOfMass,
     UnitOfPower,
     UnitOfPressure,
+    UnitOfReactivePower,
     UnitOfSpeed,
     UnitOfTemperature,
 )
@@ -227,7 +227,7 @@ SENSOR_UNIT_MAP = {
     hc.PERCENTAGE: PERCENTAGE,
     hc.POWER_WATT: UnitOfPower.WATT,
     hc.PRESSURE_HPA: UnitOfPressure.HPA,
-    hc.REACTIVE_POWER: POWER_VOLT_AMPERE_REACTIVE,
+    hc.REACTIVE_POWER: UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
     hc.SIGNAL_STRENGTH_DECIBELS: SIGNAL_STRENGTH_DECIBELS,
     hc.SIGNAL_STRENGTH_DECIBELS_MILLIWATT: SIGNAL_STRENGTH_DECIBELS_MILLIWATT,
     hc.SPEED_KILOMETERS_PER_HOUR: UnitOfSpeed.KILOMETERS_PER_HOUR,
diff --git a/homeassistant/const.py b/homeassistant/const.py
index 891cc0cc023..953f65efce2 100644
--- a/homeassistant/const.py
+++ b/homeassistant/const.py
@@ -673,8 +673,19 @@ _DEPRECATED_POWER_BTU_PER_HOUR: Final = DeprecatedConstantEnum(
 )
 """Deprecated: please use UnitOfPower.BTU_PER_HOUR."""
 
+
 # Reactive power units
-POWER_VOLT_AMPERE_REACTIVE: Final = "var"
+class UnitOfReactivePower(StrEnum):
+    """Reactive power units."""
+
+    VOLT_AMPERE_REACTIVE = "var"
+
+
+_DEPRECATED_POWER_VOLT_AMPERE_REACTIVE: Final = DeprecatedConstantEnum(
+    UnitOfReactivePower.VOLT_AMPERE_REACTIVE,
+    "2025.9",
+)
+"""Deprecated: please use UnitOfReactivePower.VOLT_AMPERE_REACTIVE."""
 
 
 # Energy units
diff --git a/tests/components/homewizard/snapshots/test_sensor.ambr b/tests/components/homewizard/snapshots/test_sensor.ambr
index 63ee9312a13..dd50b098d40 100644
--- a/tests/components/homewizard/snapshots/test_sensor.ambr
+++ b/tests/components/homewizard/snapshots/test_sensor.ambr
@@ -712,7 +712,7 @@
     'supported_features': 0,
     'translation_key': None,
     'unique_id': 'aabbccddeeff_active_reactive_power_var',
-    'unit_of_measurement': 'var',
+    'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
   })
 # ---
 # name: test_sensors[HWE-KWH1-entity_ids7][sensor.device_reactive_power:state]
@@ -721,7 +721,7 @@
       'device_class': 'reactive_power',
       'friendly_name': 'Device Reactive power',
       'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
-      'unit_of_measurement': 'var',
+      'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
     }),
     'context': <ANY>,
     'entity_id': 'sensor.device_reactive_power',
@@ -2632,7 +2632,7 @@
     'supported_features': 0,
     'translation_key': None,
     'unique_id': 'aabbccddeeff_active_reactive_power_var',
-    'unit_of_measurement': 'var',
+    'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
   })
 # ---
 # name: test_sensors[HWE-KWH3-entity_ids8][sensor.device_reactive_power:state]
@@ -2641,7 +2641,7 @@
       'device_class': 'reactive_power',
       'friendly_name': 'Device Reactive power',
       'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
-      'unit_of_measurement': 'var',
+      'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
     }),
     'context': <ANY>,
     'entity_id': 'sensor.device_reactive_power',
@@ -2719,7 +2719,7 @@
     'supported_features': 0,
     'translation_key': 'active_reactive_power_phase_var',
     'unique_id': 'aabbccddeeff_active_reactive_power_l1_var',
-    'unit_of_measurement': 'var',
+    'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
   })
 # ---
 # name: test_sensors[HWE-KWH3-entity_ids8][sensor.device_reactive_power_phase_1:state]
@@ -2728,7 +2728,7 @@
       'device_class': 'reactive_power',
       'friendly_name': 'Device Reactive power phase 1',
       'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
-      'unit_of_measurement': 'var',
+      'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
     }),
     'context': <ANY>,
     'entity_id': 'sensor.device_reactive_power_phase_1',
@@ -2806,7 +2806,7 @@
     'supported_features': 0,
     'translation_key': 'active_reactive_power_phase_var',
     'unique_id': 'aabbccddeeff_active_reactive_power_l2_var',
-    'unit_of_measurement': 'var',
+    'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
   })
 # ---
 # name: test_sensors[HWE-KWH3-entity_ids8][sensor.device_reactive_power_phase_2:state]
@@ -2815,7 +2815,7 @@
       'device_class': 'reactive_power',
       'friendly_name': 'Device Reactive power phase 2',
       'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
-      'unit_of_measurement': 'var',
+      'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
     }),
     'context': <ANY>,
     'entity_id': 'sensor.device_reactive_power_phase_2',
@@ -2893,7 +2893,7 @@
     'supported_features': 0,
     'translation_key': 'active_reactive_power_phase_var',
     'unique_id': 'aabbccddeeff_active_reactive_power_l3_var',
-    'unit_of_measurement': 'var',
+    'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
   })
 # ---
 # name: test_sensors[HWE-KWH3-entity_ids8][sensor.device_reactive_power_phase_3:state]
@@ -2902,7 +2902,7 @@
       'device_class': 'reactive_power',
       'friendly_name': 'Device Reactive power phase 3',
       'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
-      'unit_of_measurement': 'var',
+      'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
     }),
     'context': <ANY>,
     'entity_id': 'sensor.device_reactive_power_phase_3',
@@ -14905,7 +14905,7 @@
     'supported_features': 0,
     'translation_key': None,
     'unique_id': 'aabbccddeeff_active_reactive_power_var',
-    'unit_of_measurement': 'var',
+    'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
   })
 # ---
 # name: test_sensors[HWE-SKT-21-entity_ids3][sensor.device_reactive_power:state]
@@ -14914,7 +14914,7 @@
       'device_class': 'reactive_power',
       'friendly_name': 'Device Reactive power',
       'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
-      'unit_of_measurement': 'var',
+      'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
     }),
     'context': <ANY>,
     'entity_id': 'sensor.device_reactive_power',
@@ -16200,7 +16200,7 @@
     'supported_features': 0,
     'translation_key': None,
     'unique_id': 'aabbccddeeff_active_reactive_power_var',
-    'unit_of_measurement': 'var',
+    'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
   })
 # ---
 # name: test_sensors[SDM230-entity_ids5][sensor.device_reactive_power:state]
@@ -16209,7 +16209,7 @@
       'device_class': 'reactive_power',
       'friendly_name': 'Device Reactive power',
       'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
-      'unit_of_measurement': 'var',
+      'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
     }),
     'context': <ANY>,
     'entity_id': 'sensor.device_reactive_power',
@@ -18120,7 +18120,7 @@
     'supported_features': 0,
     'translation_key': None,
     'unique_id': 'aabbccddeeff_active_reactive_power_var',
-    'unit_of_measurement': 'var',
+    'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
   })
 # ---
 # name: test_sensors[SDM630-entity_ids6][sensor.device_reactive_power:state]
@@ -18129,7 +18129,7 @@
       'device_class': 'reactive_power',
       'friendly_name': 'Device Reactive power',
       'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
-      'unit_of_measurement': 'var',
+      'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
     }),
     'context': <ANY>,
     'entity_id': 'sensor.device_reactive_power',
@@ -18207,7 +18207,7 @@
     'supported_features': 0,
     'translation_key': 'active_reactive_power_phase_var',
     'unique_id': 'aabbccddeeff_active_reactive_power_l1_var',
-    'unit_of_measurement': 'var',
+    'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
   })
 # ---
 # name: test_sensors[SDM630-entity_ids6][sensor.device_reactive_power_phase_1:state]
@@ -18216,7 +18216,7 @@
       'device_class': 'reactive_power',
       'friendly_name': 'Device Reactive power phase 1',
       'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
-      'unit_of_measurement': 'var',
+      'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
     }),
     'context': <ANY>,
     'entity_id': 'sensor.device_reactive_power_phase_1',
@@ -18294,7 +18294,7 @@
     'supported_features': 0,
     'translation_key': 'active_reactive_power_phase_var',
     'unique_id': 'aabbccddeeff_active_reactive_power_l2_var',
-    'unit_of_measurement': 'var',
+    'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
   })
 # ---
 # name: test_sensors[SDM630-entity_ids6][sensor.device_reactive_power_phase_2:state]
@@ -18303,7 +18303,7 @@
       'device_class': 'reactive_power',
       'friendly_name': 'Device Reactive power phase 2',
       'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
-      'unit_of_measurement': 'var',
+      'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
     }),
     'context': <ANY>,
     'entity_id': 'sensor.device_reactive_power_phase_2',
@@ -18381,7 +18381,7 @@
     'supported_features': 0,
     'translation_key': 'active_reactive_power_phase_var',
     'unique_id': 'aabbccddeeff_active_reactive_power_l3_var',
-    'unit_of_measurement': 'var',
+    'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
   })
 # ---
 # name: test_sensors[SDM630-entity_ids6][sensor.device_reactive_power_phase_3:state]
@@ -18390,7 +18390,7 @@
       'device_class': 'reactive_power',
       'friendly_name': 'Device Reactive power phase 3',
       'state_class': <SensorStateClass.MEASUREMENT: 'measurement'>,
-      'unit_of_measurement': 'var',
+      'unit_of_measurement': <UnitOfReactivePower.VOLT_AMPERE_REACTIVE: 'var'>,
     }),
     'context': <ANY>,
     'entity_id': 'sensor.device_reactive_power_phase_3',
diff --git a/tests/components/sensor/common.py b/tests/components/sensor/common.py
index 53a93b73da3..458009b2690 100644
--- a/tests/components/sensor/common.py
+++ b/tests/components/sensor/common.py
@@ -10,11 +10,11 @@ from homeassistant.const import (
     CONCENTRATION_PARTS_PER_MILLION,
     LIGHT_LUX,
     PERCENTAGE,
-    POWER_VOLT_AMPERE_REACTIVE,
     SIGNAL_STRENGTH_DECIBELS,
     UnitOfApparentPower,
     UnitOfFrequency,
     UnitOfPressure,
+    UnitOfReactivePower,
     UnitOfVolume,
 )
 
@@ -44,7 +44,7 @@ UNITS_OF_MEASUREMENT = {
     SensorDeviceClass.ENERGY: "kWh",  # energy (Wh/kWh/MWh)
     SensorDeviceClass.FREQUENCY: UnitOfFrequency.GIGAHERTZ,  # energy (Hz/kHz/MHz/GHz)
     SensorDeviceClass.POWER_FACTOR: PERCENTAGE,  # power factor (no unit, min: -1.0, max: 1.0)
-    SensorDeviceClass.REACTIVE_POWER: POWER_VOLT_AMPERE_REACTIVE,  # reactive power (var)
+    SensorDeviceClass.REACTIVE_POWER: UnitOfReactivePower.VOLT_AMPERE_REACTIVE,  # reactive power (var)
     SensorDeviceClass.VOLATILE_ORGANIC_COMPOUNDS: CONCENTRATION_MICROGRAMS_PER_CUBIC_METER,  # µg/m³ of vocs
     SensorDeviceClass.VOLTAGE: "V",  # voltage (V)
     SensorDeviceClass.GAS: UnitOfVolume.CUBIC_METERS,  # gas (m³)