diff --git a/homeassistant/components/citybikes/sensor.py b/homeassistant/components/citybikes/sensor.py
index 25716b67464..5da74167a0b 100644
--- a/homeassistant/components/citybikes/sensor.py
+++ b/homeassistant/components/citybikes/sensor.py
@@ -37,7 +37,7 @@ from homeassistant.helpers.event import async_track_time_interval
 from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 from homeassistant.util import location
 from homeassistant.util.unit_conversion import DistanceConverter
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM
+from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -171,7 +171,7 @@ async def async_setup_platform(
     stations_list = set(config.get(CONF_STATIONS_LIST, []))
     radius = config.get(CONF_RADIUS, 0)
     name = config[CONF_NAME]
-    if hass.config.units is IMPERIAL_SYSTEM:
+    if hass.config.units is US_CUSTOMARY_SYSTEM:
         radius = DistanceConverter.convert(radius, LENGTH_FEET, LENGTH_METERS)
 
     # Create a single instance of CityBikesNetworks.
diff --git a/homeassistant/components/ecowitt/sensor.py b/homeassistant/components/ecowitt/sensor.py
index 172561d7125..8c55c8bf801 100644
--- a/homeassistant/components/ecowitt/sensor.py
+++ b/homeassistant/components/ecowitt/sensor.py
@@ -40,7 +40,7 @@ from homeassistant.const import (
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.typing import StateType
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM, METRIC_SYSTEM
+from homeassistant.util.unit_system import METRIC_SYSTEM, US_CUSTOMARY_SYSTEM
 
 from .const import DOMAIN
 from .entity import EcowittEntity
@@ -219,7 +219,7 @@ async def async_setup_entry(
         # Ignore metrics that are not supported by the user's locale
         if sensor.stype in _METRIC and hass.config.units is not METRIC_SYSTEM:
             return
-        if sensor.stype in _IMPERIAL and hass.config.units is not IMPERIAL_SYSTEM:
+        if sensor.stype in _IMPERIAL and hass.config.units is not US_CUSTOMARY_SYSTEM:
             return
         mapping = ECOWITT_SENSORS_MAPPING[sensor.stype]
 
diff --git a/homeassistant/components/gdacs/__init__.py b/homeassistant/components/gdacs/__init__.py
index 71c06033469..269da061b58 100644
--- a/homeassistant/components/gdacs/__init__.py
+++ b/homeassistant/components/gdacs/__init__.py
@@ -20,7 +20,7 @@ from homeassistant.helpers.dispatcher import async_dispatcher_send
 from homeassistant.helpers.event import async_track_time_interval
 from homeassistant.helpers.typing import ConfigType
 from homeassistant.util.unit_conversion import DistanceConverter
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM
+from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM
 
 from .const import (
     CONF_CATEGORIES,
@@ -88,7 +88,7 @@ async def async_setup_entry(hass: HomeAssistant, config_entry: ConfigEntry) -> b
     feeds = hass.data[DOMAIN].setdefault(FEED, {})
 
     radius = config_entry.data[CONF_RADIUS]
-    if hass.config.units is IMPERIAL_SYSTEM:
+    if hass.config.units is US_CUSTOMARY_SYSTEM:
         radius = DistanceConverter.convert(radius, LENGTH_MILES, LENGTH_KILOMETERS)
     # Create feed entity manager for all platforms.
     manager = GdacsFeedEntityManager(hass, config_entry, radius)
diff --git a/homeassistant/components/gdacs/geo_location.py b/homeassistant/components/gdacs/geo_location.py
index b6083f2aa71..5d3b8f3375b 100644
--- a/homeassistant/components/gdacs/geo_location.py
+++ b/homeassistant/components/gdacs/geo_location.py
@@ -16,7 +16,7 @@ from homeassistant.helpers import entity_registry as er
 from homeassistant.helpers.dispatcher import async_dispatcher_connect
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.util.unit_conversion import DistanceConverter
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM
+from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM
 
 from . import GdacsFeedEntityManager
 from .const import DEFAULT_ICON, DOMAIN, FEED
@@ -107,7 +107,7 @@ class GdacsEvent(GeolocationEvent):
 
     async def async_added_to_hass(self) -> None:
         """Call when entity is added to hass."""
-        if self.hass.config.units is IMPERIAL_SYSTEM:
+        if self.hass.config.units is US_CUSTOMARY_SYSTEM:
             self._attr_unit_of_measurement = LENGTH_MILES
         self._remove_signal_delete = async_dispatcher_connect(
             self.hass, f"gdacs_delete_{self._external_id}", self._delete_callback
@@ -149,7 +149,7 @@ class GdacsEvent(GeolocationEvent):
             event_name = f"{feed_entry.country} ({feed_entry.event_id})"
         self._attr_name = f"{feed_entry.event_type}: {event_name}"
         # Convert distance if not metric system.
-        if self.hass.config.units is IMPERIAL_SYSTEM:
+        if self.hass.config.units is US_CUSTOMARY_SYSTEM:
             self._attr_distance = DistanceConverter.convert(
                 feed_entry.distance_to_home, LENGTH_KILOMETERS, LENGTH_MILES
             )
diff --git a/homeassistant/components/geonetnz_quakes/__init__.py b/homeassistant/components/geonetnz_quakes/__init__.py
index bef0ee4c1fd..e09b4e720e3 100644
--- a/homeassistant/components/geonetnz_quakes/__init__.py
+++ b/homeassistant/components/geonetnz_quakes/__init__.py
@@ -20,7 +20,7 @@ from homeassistant.helpers.dispatcher import async_dispatcher_send
 from homeassistant.helpers.event import async_track_time_interval
 from homeassistant.helpers.typing import ConfigType
 from homeassistant.util.unit_conversion import DistanceConverter
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM
+from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM
 
 from .const import (
     CONF_MINIMUM_MAGNITUDE,
@@ -95,7 +95,7 @@ async def async_setup_entry(hass: HomeAssistant, config_entry: ConfigEntry) -> b
     feeds = hass.data[DOMAIN].setdefault(FEED, {})
 
     radius = config_entry.data[CONF_RADIUS]
-    if hass.config.units is IMPERIAL_SYSTEM:
+    if hass.config.units is US_CUSTOMARY_SYSTEM:
         radius = DistanceConverter.convert(radius, LENGTH_MILES, LENGTH_KILOMETERS)
     # Create feed entity manager for all platforms.
     manager = GeonetnzQuakesFeedEntityManager(hass, config_entry, radius)
diff --git a/homeassistant/components/geonetnz_quakes/geo_location.py b/homeassistant/components/geonetnz_quakes/geo_location.py
index bd382f1767d..a530c2d8fdb 100644
--- a/homeassistant/components/geonetnz_quakes/geo_location.py
+++ b/homeassistant/components/geonetnz_quakes/geo_location.py
@@ -15,7 +15,7 @@ from homeassistant.helpers import entity_registry as er
 from homeassistant.helpers.dispatcher import async_dispatcher_connect
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.util.unit_conversion import DistanceConverter
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM
+from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM
 
 from . import GeonetnzQuakesFeedEntityManager
 from .const import DOMAIN, FEED
@@ -93,7 +93,7 @@ class GeonetnzQuakesEvent(GeolocationEvent):
 
     async def async_added_to_hass(self) -> None:
         """Call when entity is added to hass."""
-        if self.hass.config.units is IMPERIAL_SYSTEM:
+        if self.hass.config.units is US_CUSTOMARY_SYSTEM:
             self._attr_unit_of_measurement = LENGTH_MILES
         self._remove_signal_delete = async_dispatcher_connect(
             self.hass,
@@ -136,7 +136,7 @@ class GeonetnzQuakesEvent(GeolocationEvent):
         """Update the internal state from the provided feed entry."""
         self._attr_name = feed_entry.title
         # Convert distance if not metric system.
-        if self.hass.config.units is IMPERIAL_SYSTEM:
+        if self.hass.config.units is US_CUSTOMARY_SYSTEM:
             self._attr_distance = DistanceConverter.convert(
                 feed_entry.distance_to_home, LENGTH_KILOMETERS, LENGTH_MILES
             )
diff --git a/homeassistant/components/geonetnz_volcano/config_flow.py b/homeassistant/components/geonetnz_volcano/config_flow.py
index d095aefab01..34e16970d4f 100644
--- a/homeassistant/components/geonetnz_volcano/config_flow.py
+++ b/homeassistant/components/geonetnz_volcano/config_flow.py
@@ -11,7 +11,7 @@ from homeassistant.const import (
 )
 from homeassistant.core import callback
 from homeassistant.helpers import config_validation as cv
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM
+from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM
 
 from .const import (
     DEFAULT_RADIUS,
@@ -62,7 +62,7 @@ class GeonetnzVolcanoFlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
         if identifier in configured_instances(self.hass):
             return await self._show_form({"base": "already_configured"})
 
-        if self.hass.config.units is IMPERIAL_SYSTEM:
+        if self.hass.config.units is US_CUSTOMARY_SYSTEM:
             user_input[CONF_UNIT_SYSTEM] = IMPERIAL_UNITS
         else:
             user_input[CONF_UNIT_SYSTEM] = METRIC_UNITS
diff --git a/homeassistant/components/google_travel_time/sensor.py b/homeassistant/components/google_travel_time/sensor.py
index 3ea38af1f27..412f1738294 100644
--- a/homeassistant/components/google_travel_time/sensor.py
+++ b/homeassistant/components/google_travel_time/sensor.py
@@ -22,7 +22,7 @@ from homeassistant.helpers.entity import DeviceInfo
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.location import find_coordinates
 import homeassistant.util.dt as dt_util
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM
+from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM
 
 from .const import (
     ATTRIBUTION,
@@ -66,7 +66,7 @@ async def async_setup_entry(
 
         if CONF_UNITS not in options:
             options[CONF_UNITS] = UNITS_METRIC
-            if hass.config.units is IMPERIAL_SYSTEM:
+            if hass.config.units is US_CUSTOMARY_SYSTEM:
                 options[CONF_UNITS] = UNITS_IMPERIAL
 
         if CONF_TRAVEL_MODE in new_data:
diff --git a/homeassistant/components/here_travel_time/config_flow.py b/homeassistant/components/here_travel_time/config_flow.py
index a0f1fbbeb8c..38bd1742c91 100644
--- a/homeassistant/components/here_travel_time/config_flow.py
+++ b/homeassistant/components/here_travel_time/config_flow.py
@@ -24,7 +24,7 @@ from homeassistant.helpers.selector import (
     LocationSelector,
     TimeSelector,
 )
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM
+from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM
 
 from .const import (
     CONF_ARRIVAL_TIME,
@@ -98,7 +98,7 @@ def default_options(hass: HomeAssistant) -> dict[str, str | None]:
         CONF_DEPARTURE_TIME: None,
         CONF_UNIT_SYSTEM: METRIC_UNITS,
     }
-    if hass.config.units is IMPERIAL_SYSTEM:
+    if hass.config.units is US_CUSTOMARY_SYSTEM:
         default[CONF_UNIT_SYSTEM] = IMPERIAL_UNITS
     return default
 
diff --git a/homeassistant/components/mazda/sensor.py b/homeassistant/components/mazda/sensor.py
index b322c80b6e6..212d646051c 100644
--- a/homeassistant/components/mazda/sensor.py
+++ b/homeassistant/components/mazda/sensor.py
@@ -21,7 +21,7 @@ from homeassistant.const import (
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.typing import StateType
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM, UnitSystem
+from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM, UnitSystem
 
 from . import MazdaEntity
 from .const import DATA_CLIENT, DATA_COORDINATOR, DOMAIN
@@ -51,7 +51,7 @@ class MazdaSensorEntityDescription(
 
 def _get_distance_unit(unit_system: UnitSystem) -> str:
     """Return the distance unit for the given unit system."""
-    if unit_system is IMPERIAL_SYSTEM:
+    if unit_system is US_CUSTOMARY_SYSTEM:
         return LENGTH_MILES
     return LENGTH_KILOMETERS
 
diff --git a/homeassistant/components/nissan_leaf/sensor.py b/homeassistant/components/nissan_leaf/sensor.py
index 4543467f932..c92ed2300a4 100644
--- a/homeassistant/components/nissan_leaf/sensor.py
+++ b/homeassistant/components/nissan_leaf/sensor.py
@@ -13,7 +13,7 @@ from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.icon import icon_for_battery_level
 from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 from homeassistant.util.unit_conversion import DistanceConverter
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM
+from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM
 
 from . import LeafEntity
 from .const import (
@@ -123,7 +123,7 @@ class LeafRangeSensor(LeafEntity, SensorEntity):
         if ret is None:
             return None
 
-        if self.car.hass.config.units is IMPERIAL_SYSTEM or self.car.force_miles:
+        if self.car.hass.config.units is US_CUSTOMARY_SYSTEM or self.car.force_miles:
             ret = DistanceConverter.convert(ret, LENGTH_KILOMETERS, LENGTH_MILES)
 
         return round(ret)
@@ -131,7 +131,7 @@ class LeafRangeSensor(LeafEntity, SensorEntity):
     @property
     def native_unit_of_measurement(self) -> str:
         """Battery range unit."""
-        if self.car.hass.config.units is IMPERIAL_SYSTEM or self.car.force_miles:
+        if self.car.hass.config.units is US_CUSTOMARY_SYSTEM or self.car.force_miles:
             return LENGTH_MILES
         return LENGTH_KILOMETERS
 
diff --git a/homeassistant/components/nws/sensor.py b/homeassistant/components/nws/sensor.py
index ab34781f209..2e7495701a9 100644
--- a/homeassistant/components/nws/sensor.py
+++ b/homeassistant/components/nws/sensor.py
@@ -23,7 +23,7 @@ from homeassistant.util.unit_conversion import (
     PressureConverter,
     SpeedConverter,
 )
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM
+from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM
 
 from . import base_unique_id, device_info
 from .const import (
@@ -81,7 +81,7 @@ class NWSSensor(CoordinatorEntity, SensorEntity):
         self.entity_description = description
 
         self._attr_name = f"{station} {description.name}"
-        if hass.config.units is IMPERIAL_SYSTEM:
+        if hass.config.units is US_CUSTOMARY_SYSTEM:
             self._attr_native_unit_of_measurement = description.unit_convert
 
     @property
diff --git a/homeassistant/components/rainmachine/select.py b/homeassistant/components/rainmachine/select.py
index 12860e59e79..9010b9b4fed 100644
--- a/homeassistant/components/rainmachine/select.py
+++ b/homeassistant/components/rainmachine/select.py
@@ -11,7 +11,7 @@ from homeassistant.core import HomeAssistant, callback
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers.entity import EntityCategory
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM, UnitSystem
+from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM, UnitSystem
 
 from . import RainMachineData, RainMachineEntity
 from .const import DATA_RESTRICTIONS_UNIVERSAL, DOMAIN
@@ -130,7 +130,7 @@ class FreezeProtectionTemperatureSelect(RainMachineEntity, SelectEntity):
         self._label_to_api_value_map = {}
 
         for option in description.extended_options:
-            if unit_system is IMPERIAL_SYSTEM:
+            if unit_system is US_CUSTOMARY_SYSTEM:
                 label = option.imperial_label
             else:
                 label = option.metric_label
diff --git a/homeassistant/components/subaru/sensor.py b/homeassistant/components/subaru/sensor.py
index 672fe6b0dcc..bb467fc77de 100644
--- a/homeassistant/components/subaru/sensor.py
+++ b/homeassistant/components/subaru/sensor.py
@@ -30,7 +30,11 @@ from homeassistant.helpers.update_coordinator import (
     DataUpdateCoordinator,
 )
 from homeassistant.util.unit_conversion import DistanceConverter, VolumeConverter
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM, LENGTH_UNITS, PRESSURE_UNITS
+from homeassistant.util.unit_system import (
+    LENGTH_UNITS,
+    PRESSURE_UNITS,
+    US_CUSTOMARY_SYSTEM,
+)
 
 from . import get_device_info
 from .const import (
@@ -223,7 +227,7 @@ class SubaruSensor(
         if unit in LENGTH_UNITS:
             return round(unit_system.length(current_value, unit), 1)
 
-        if unit in PRESSURE_UNITS and unit_system == IMPERIAL_SYSTEM:
+        if unit in PRESSURE_UNITS and unit_system == US_CUSTOMARY_SYSTEM:
             return round(
                 unit_system.pressure(current_value, unit),
                 1,
@@ -235,7 +239,7 @@ class SubaruSensor(
                 FUEL_CONSUMPTION_LITERS_PER_HUNDRED_KILOMETERS,
                 FUEL_CONSUMPTION_MILES_PER_GALLON,
             ]
-            and unit_system == IMPERIAL_SYSTEM
+            and unit_system == US_CUSTOMARY_SYSTEM
         ):
             return round((100.0 * L_PER_GAL) / (KM_PER_MI * current_value), 1)
 
@@ -250,14 +254,14 @@ class SubaruSensor(
             return self.hass.config.units.length_unit
 
         if unit in PRESSURE_UNITS:
-            if self.hass.config.units == IMPERIAL_SYSTEM:
+            if self.hass.config.units == US_CUSTOMARY_SYSTEM:
                 return self.hass.config.units.pressure_unit
 
         if unit in [
             FUEL_CONSUMPTION_LITERS_PER_HUNDRED_KILOMETERS,
             FUEL_CONSUMPTION_MILES_PER_GALLON,
         ]:
-            if self.hass.config.units == IMPERIAL_SYSTEM:
+            if self.hass.config.units == US_CUSTOMARY_SYSTEM:
                 return FUEL_CONSUMPTION_MILES_PER_GALLON
 
         return unit
diff --git a/homeassistant/components/tomorrowio/sensor.py b/homeassistant/components/tomorrowio/sensor.py
index 78c973fd80b..07b922e72ed 100644
--- a/homeassistant/components/tomorrowio/sensor.py
+++ b/homeassistant/components/tomorrowio/sensor.py
@@ -38,7 +38,7 @@ from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.util import slugify
 from homeassistant.util.unit_conversion import DistanceConverter, SpeedConverter
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM
+from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM
 
 from . import TomorrowioDataUpdateCoordinator, TomorrowioEntity
 from .const import (
@@ -327,7 +327,7 @@ class BaseTomorrowioSensorEntity(TomorrowioEntity, SensorEntity):
         )
         if self.entity_description.native_unit_of_measurement is None:
             self._attr_native_unit_of_measurement = description.unit_metric
-            if hass.config.units is IMPERIAL_SYSTEM:
+            if hass.config.units is US_CUSTOMARY_SYSTEM:
                 self._attr_native_unit_of_measurement = description.unit_imperial
 
     @property
@@ -356,7 +356,7 @@ class BaseTomorrowioSensorEntity(TomorrowioEntity, SensorEntity):
             desc.imperial_conversion
             and desc.unit_imperial is not None
             and desc.unit_imperial != desc.unit_metric
-            and self.hass.config.units is IMPERIAL_SYSTEM
+            and self.hass.config.units is US_CUSTOMARY_SYSTEM
         ):
             return handle_conversion(state, desc.imperial_conversion)
 
diff --git a/homeassistant/components/waze_travel_time/sensor.py b/homeassistant/components/waze_travel_time/sensor.py
index 67081aeab5f..d9916ae7df1 100644
--- a/homeassistant/components/waze_travel_time/sensor.py
+++ b/homeassistant/components/waze_travel_time/sensor.py
@@ -26,7 +26,7 @@ from homeassistant.helpers.entity import DeviceInfo
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 from homeassistant.helpers.location import find_coordinates
 from homeassistant.util.unit_conversion import DistanceConverter
-from homeassistant.util.unit_system import IMPERIAL_SYSTEM
+from homeassistant.util.unit_system import US_CUSTOMARY_SYSTEM
 
 from .const import (
     CONF_AVOID_FERRIES,
@@ -69,7 +69,7 @@ async def async_setup_entry(
         CONF_AVOID_SUBSCRIPTION_ROADS: DEFAULT_AVOID_SUBSCRIPTION_ROADS,
         CONF_AVOID_TOLL_ROADS: DEFAULT_AVOID_TOLL_ROADS,
     }
-    if hass.config.units is IMPERIAL_SYSTEM:
+    if hass.config.units is US_CUSTOMARY_SYSTEM:
         defaults[CONF_UNITS] = IMPERIAL_UNITS
 
     if not config_entry.options: