diff --git a/homeassistant/components/adax/climate.py b/homeassistant/components/adax/climate.py
index 8703619ca925..cc15872dafa0 100644
--- a/homeassistant/components/adax/climate.py
+++ b/homeassistant/components/adax/climate.py
@@ -19,7 +19,7 @@ from homeassistant.const import (
     CONF_TOKEN,
     CONF_UNIQUE_ID,
     PRECISION_WHOLE,
-    TEMP_CELSIUS,
+    UnitOfTemperature,
 )
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.aiohttp_client import async_get_clientsession
@@ -69,7 +69,7 @@ class AdaxDevice(ClimateEntity):
     _attr_min_temp = 5
     _attr_supported_features = ClimateEntityFeature.TARGET_TEMPERATURE
     _attr_target_temperature_step = PRECISION_WHOLE
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
 
     def __init__(self, heater_data: dict[str, Any], adax_data_handler: Adax) -> None:
         """Initialize the heater."""
@@ -132,7 +132,7 @@ class LocalAdaxDevice(ClimateEntity):
     _attr_min_temp = 5
     _attr_supported_features = ClimateEntityFeature.TARGET_TEMPERATURE
     _attr_target_temperature_step = PRECISION_WHOLE
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
 
     def __init__(self, adax_data_handler, unique_id):
         """Initialize the heater."""
diff --git a/homeassistant/components/advantage_air/climate.py b/homeassistant/components/advantage_air/climate.py
index fdba46cde766..362701f3b9f3 100644
--- a/homeassistant/components/advantage_air/climate.py
+++ b/homeassistant/components/advantage_air/climate.py
@@ -14,7 +14,7 @@ from homeassistant.components.climate import (
     HVACMode,
 )
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import ATTR_TEMPERATURE, PRECISION_WHOLE, TEMP_CELSIUS
+from homeassistant.const import ATTR_TEMPERATURE, PRECISION_WHOLE, UnitOfTemperature
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
@@ -83,7 +83,7 @@ async def async_setup_entry(
 class AdvantageAirAC(AdvantageAirAcEntity, ClimateEntity):
     """AdvantageAir AC unit."""
 
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
     _attr_target_temperature_step = PRECISION_WHOLE
     _attr_max_temp = 32
     _attr_min_temp = 16
@@ -149,7 +149,7 @@ class AdvantageAirAC(AdvantageAirAcEntity, ClimateEntity):
 class AdvantageAirZone(AdvantageAirZoneEntity, ClimateEntity):
     """AdvantageAir Zone control."""
 
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
     _attr_target_temperature_step = PRECISION_WHOLE
     _attr_max_temp = 32
     _attr_min_temp = 16
diff --git a/homeassistant/components/airtouch4/climate.py b/homeassistant/components/airtouch4/climate.py
index 598b6ecd6e3b..e7d73ec0f1c4 100644
--- a/homeassistant/components/airtouch4/climate.py
+++ b/homeassistant/components/airtouch4/climate.py
@@ -16,7 +16,7 @@ from homeassistant.components.climate import (
     HVACMode,
 )
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import ATTR_TEMPERATURE, TEMP_CELSIUS
+from homeassistant.const import ATTR_TEMPERATURE, UnitOfTemperature
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.entity import DeviceInfo
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
@@ -87,7 +87,7 @@ class AirtouchAC(CoordinatorEntity, ClimateEntity):
     _attr_supported_features = (
         ClimateEntityFeature.TARGET_TEMPERATURE | ClimateEntityFeature.FAN_MODE
     )
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
 
     def __init__(self, coordinator, ac_number, info):
         """Initialize the climate device."""
@@ -201,7 +201,7 @@ class AirtouchGroup(CoordinatorEntity, ClimateEntity):
     """Representation of an AirTouch 4 group."""
 
     _attr_supported_features = ClimateEntityFeature.TARGET_TEMPERATURE
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
     _attr_hvac_modes = AT_GROUP_MODES
 
     def __init__(self, coordinator, group_number, info):
diff --git a/homeassistant/components/ambiclimate/climate.py b/homeassistant/components/ambiclimate/climate.py
index 5a5fea6c2306..2bb2b441430a 100644
--- a/homeassistant/components/ambiclimate/climate.py
+++ b/homeassistant/components/ambiclimate/climate.py
@@ -19,7 +19,7 @@ from homeassistant.const import (
     ATTR_TEMPERATURE,
     CONF_CLIENT_ID,
     CONF_CLIENT_SECRET,
-    TEMP_CELSIUS,
+    UnitOfTemperature,
 )
 from homeassistant.core import HomeAssistant, ServiceCall
 from homeassistant.helpers import config_validation as cv
@@ -150,7 +150,7 @@ async def async_setup_entry(
 class AmbiclimateEntity(ClimateEntity):
     """Representation of a Ambiclimate Thermostat device."""
 
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
     _attr_target_temperature_step = 1
     _attr_supported_features = ClimateEntityFeature.TARGET_TEMPERATURE
     _attr_hvac_modes = [HVACMode.HEAT, HVACMode.OFF]
diff --git a/homeassistant/components/baf/climate.py b/homeassistant/components/baf/climate.py
index d4ed4ac43379..6798639e7a8b 100644
--- a/homeassistant/components/baf/climate.py
+++ b/homeassistant/components/baf/climate.py
@@ -10,7 +10,7 @@ from homeassistant.components.climate import (
     HVACAction,
     HVACMode,
 )
-from homeassistant.const import ATTR_TEMPERATURE, TEMP_CELSIUS
+from homeassistant.const import ATTR_TEMPERATURE, UnitOfTemperature
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
@@ -36,7 +36,7 @@ class BAFAutoComfort(BAFEntity, ClimateEntity):
     """BAF climate auto comfort."""
 
     _attr_supported_features = ClimateEntityFeature.TARGET_TEMPERATURE
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
     _attr_hvac_modes = [HVACMode.OFF, HVACMode.FAN_ONLY]
 
     @callback
diff --git a/homeassistant/components/balboa/climate.py b/homeassistant/components/balboa/climate.py
index 1cd93b4fddb7..c04f6367cfd7 100644
--- a/homeassistant/components/balboa/climate.py
+++ b/homeassistant/components/balboa/climate.py
@@ -19,8 +19,7 @@ from homeassistant.const import (
     ATTR_TEMPERATURE,
     PRECISION_HALVES,
     PRECISION_WHOLE,
-    TEMP_CELSIUS,
-    TEMP_FAHRENHEIT,
+    UnitOfTemperature,
 )
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
@@ -82,10 +81,10 @@ class BalboaSpaClimate(BalboaEntity, ClimateEntity):
             self._attr_supported_features |= ClimateEntityFeature.FAN_MODE
         self._attr_min_temp = self._client.tmin[self._client.TEMPRANGE_LOW][scale]
         self._attr_max_temp = self._client.tmax[self._client.TEMPRANGE_HIGH][scale]
-        self._attr_temperature_unit = TEMP_FAHRENHEIT
+        self._attr_temperature_unit = UnitOfTemperature.FAHRENHEIT
         self._attr_precision = PRECISION_WHOLE
         if self._client.get_tempscale() == self._client.TSCALE_C:
-            self._attr_temperature_unit = TEMP_CELSIUS
+            self._attr_temperature_unit = UnitOfTemperature.CELSIUS
             self._attr_precision = PRECISION_HALVES
 
     @property
diff --git a/homeassistant/components/blebox/climate.py b/homeassistant/components/blebox/climate.py
index 9b632c9aceb6..ba371b6d1f83 100644
--- a/homeassistant/components/blebox/climate.py
+++ b/homeassistant/components/blebox/climate.py
@@ -12,7 +12,7 @@ from homeassistant.components.climate import (
     HVACMode,
 )
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import ATTR_TEMPERATURE, TEMP_CELSIUS
+from homeassistant.const import ATTR_TEMPERATURE, UnitOfTemperature
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
@@ -41,7 +41,7 @@ class BleBoxClimateEntity(BleBoxEntity[blebox_uniapi.climate.Climate], ClimateEn
 
     _attr_supported_features = ClimateEntityFeature.TARGET_TEMPERATURE
     _attr_hvac_modes = [HVACMode.OFF, HVACMode.HEAT]
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
 
     @property
     def hvac_mode(self):
diff --git a/homeassistant/components/coolmaster/climate.py b/homeassistant/components/coolmaster/climate.py
index d2b0685cdf09..933072aac9d7 100644
--- a/homeassistant/components/coolmaster/climate.py
+++ b/homeassistant/components/coolmaster/climate.py
@@ -8,7 +8,7 @@ from homeassistant.components.climate import (
     HVACMode,
 )
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import ATTR_TEMPERATURE, TEMP_CELSIUS, TEMP_FAHRENHEIT
+from homeassistant.const import ATTR_TEMPERATURE, UnitOfTemperature
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.entity import DeviceInfo
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
@@ -100,9 +100,9 @@ class CoolmasterClimate(CoordinatorEntity, ClimateEntity):
     def temperature_unit(self) -> str:
         """Return the unit of measurement."""
         if self._unit.temperature_unit == "celsius":
-            return TEMP_CELSIUS
+            return UnitOfTemperature.CELSIUS
 
-        return TEMP_FAHRENHEIT
+        return UnitOfTemperature.FAHRENHEIT
 
     @property
     def current_temperature(self):
diff --git a/homeassistant/components/daikin/climate.py b/homeassistant/components/daikin/climate.py
index bd4763d32548..bd0e846ea4d9 100644
--- a/homeassistant/components/daikin/climate.py
+++ b/homeassistant/components/daikin/climate.py
@@ -22,7 +22,12 @@ from homeassistant.components.climate import (
     HVACMode,
 )
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import ATTR_TEMPERATURE, CONF_HOST, CONF_NAME, TEMP_CELSIUS
+from homeassistant.const import (
+    ATTR_TEMPERATURE,
+    CONF_HOST,
+    CONF_NAME,
+    UnitOfTemperature,
+)
 from homeassistant.core import HomeAssistant
 import homeassistant.helpers.config_validation as cv
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
@@ -118,7 +123,7 @@ class DaikinClimate(ClimateEntity):
 
     _attr_name = None
     _attr_has_entity_name = True
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
 
     def __init__(self, api: DaikinApi) -> None:
         """Initialize the climate device."""
diff --git a/homeassistant/components/deconz/climate.py b/homeassistant/components/deconz/climate.py
index c5b9571ed341..eb1d0d6b6725 100644
--- a/homeassistant/components/deconz/climate.py
+++ b/homeassistant/components/deconz/climate.py
@@ -28,7 +28,7 @@ from homeassistant.components.climate import (
     HVACMode,
 )
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import ATTR_TEMPERATURE, TEMP_CELSIUS
+from homeassistant.const import ATTR_TEMPERATURE, UnitOfTemperature
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
@@ -99,7 +99,7 @@ class DeconzThermostat(DeconzDevice[Thermostat], ClimateEntity):
 
     TYPE = DOMAIN
 
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
 
     def __init__(self, device: Thermostat, gateway: DeconzGateway) -> None:
         """Set up thermostat device."""
diff --git a/homeassistant/components/ecobee/climate.py b/homeassistant/components/ecobee/climate.py
index 028979b2a850..b5512ce3c88a 100644
--- a/homeassistant/components/ecobee/climate.py
+++ b/homeassistant/components/ecobee/climate.py
@@ -26,7 +26,7 @@ from homeassistant.const import (
     PRECISION_TENTHS,
     STATE_OFF,
     STATE_ON,
-    TEMP_FAHRENHEIT,
+    UnitOfTemperature,
 )
 from homeassistant.core import HomeAssistant, ServiceCall
 from homeassistant.helpers import entity_platform
@@ -304,7 +304,7 @@ class Thermostat(ClimateEntity):
     """A thermostat class for Ecobee."""
 
     _attr_precision = PRECISION_TENTHS
-    _attr_temperature_unit = TEMP_FAHRENHEIT
+    _attr_temperature_unit = UnitOfTemperature.FAHRENHEIT
 
     def __init__(self, data, thermostat_index, thermostat):
         """Initialize the thermostat."""
@@ -766,12 +766,12 @@ class Thermostat(ClimateEntity):
         cool_temp = TemperatureConverter.convert(
             service_data[ATTR_COOL_TEMP],
             self.hass.config.units.temperature_unit,
-            TEMP_FAHRENHEIT,
+            UnitOfTemperature.FAHRENHEIT,
         )
         heat_temp = TemperatureConverter.convert(
             service_data[ATTR_HEAT_TEMP],
             self.hass.config.units.temperature_unit,
-            TEMP_FAHRENHEIT,
+            UnitOfTemperature.FAHRENHEIT,
         )
         start_date = service_data.get(ATTR_START_DATE)
         start_time = service_data.get(ATTR_START_TIME)
diff --git a/homeassistant/components/ephember/climate.py b/homeassistant/components/ephember/climate.py
index 9c83a1c8a67b..3735b4d16c2e 100644
--- a/homeassistant/components/ephember/climate.py
+++ b/homeassistant/components/ephember/climate.py
@@ -29,7 +29,7 @@ from homeassistant.const import (
     ATTR_TEMPERATURE,
     CONF_PASSWORD,
     CONF_USERNAME,
-    TEMP_CELSIUS,
+    UnitOfTemperature,
 )
 from homeassistant.core import HomeAssistant
 import homeassistant.helpers.config_validation as cv
@@ -82,7 +82,7 @@ class EphEmberThermostat(ClimateEntity):
     """Representation of a EphEmber thermostat."""
 
     _attr_hvac_modes = OPERATION_LIST
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
 
     def __init__(self, ember, zone):
         """Initialize the thermostat."""
diff --git a/homeassistant/components/eq3btsmart/climate.py b/homeassistant/components/eq3btsmart/climate.py
index 027366c96ef4..1ac4531a3764 100644
--- a/homeassistant/components/eq3btsmart/climate.py
+++ b/homeassistant/components/eq3btsmart/climate.py
@@ -21,7 +21,7 @@ from homeassistant.const import (
     CONF_DEVICES,
     CONF_MAC,
     PRECISION_HALVES,
-    TEMP_CELSIUS,
+    UnitOfTemperature,
 )
 from homeassistant.core import HomeAssistant
 import homeassistant.helpers.config_validation as cv
@@ -107,7 +107,7 @@ class EQ3BTSmartThermostat(ClimateEntity):
     _attr_supported_features = (
         ClimateEntityFeature.TARGET_TEMPERATURE | ClimateEntityFeature.PRESET_MODE
     )
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
 
     def __init__(self, mac: str, name: str) -> None:
         """Initialize the thermostat."""
diff --git a/homeassistant/components/escea/climate.py b/homeassistant/components/escea/climate.py
index a764c019c500..df191afb859f 100644
--- a/homeassistant/components/escea/climate.py
+++ b/homeassistant/components/escea/climate.py
@@ -16,7 +16,7 @@ from homeassistant.components.climate import (
     HVACMode,
 )
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import ATTR_TEMPERATURE, PRECISION_WHOLE, TEMP_CELSIUS
+from homeassistant.const import ATTR_TEMPERATURE, PRECISION_WHOLE, UnitOfTemperature
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.dispatcher import async_dispatcher_connect
 from homeassistant.helpers.entity import DeviceInfo
@@ -84,7 +84,7 @@ class ControllerEntity(ClimateEntity):
         ClimateEntityFeature.TARGET_TEMPERATURE | ClimateEntityFeature.FAN_MODE
     )
     _attr_target_temperature_step = PRECISION_WHOLE
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
 
     def __init__(self, controller: Controller) -> None:
         """Initialise ControllerDevice."""
diff --git a/homeassistant/components/esphome/climate.py b/homeassistant/components/esphome/climate.py
index 352068aaa577..058e557b1a84 100644
--- a/homeassistant/components/esphome/climate.py
+++ b/homeassistant/components/esphome/climate.py
@@ -49,7 +49,7 @@ from homeassistant.const import (
     PRECISION_HALVES,
     PRECISION_TENTHS,
     PRECISION_WHOLE,
-    TEMP_CELSIUS,
+    UnitOfTemperature,
 )
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
@@ -136,7 +136,7 @@ _PRESETS: EsphomeEnumMapper[ClimatePreset, str] = EsphomeEnumMapper(
 class EsphomeClimateEntity(EsphomeEntity[ClimateInfo, ClimateState], ClimateEntity):
     """A climate implementation for ESPHome."""
 
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
 
     @property
     def precision(self) -> float:
diff --git a/homeassistant/components/evohome/climate.py b/homeassistant/components/evohome/climate.py
index 4594268623c8..a7b8b19ce473 100644
--- a/homeassistant/components/evohome/climate.py
+++ b/homeassistant/components/evohome/climate.py
@@ -14,7 +14,7 @@ from homeassistant.components.climate import (
     ClimateEntityFeature,
     HVACMode,
 )
-from homeassistant.const import PRECISION_TENTHS, TEMP_CELSIUS
+from homeassistant.const import PRECISION_TENTHS, UnitOfTemperature
 from homeassistant.core import HomeAssistant
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
@@ -126,7 +126,7 @@ async def async_setup_platform(
 class EvoClimateEntity(EvoDevice, ClimateEntity):
     """Base for an evohome Climate device."""
 
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
 
     @property
     def hvac_modes(self) -> list[str]:
diff --git a/homeassistant/components/fibaro/climate.py b/homeassistant/components/fibaro/climate.py
index 7731b2544c4f..8607d2c681a5 100644
--- a/homeassistant/components/fibaro/climate.py
+++ b/homeassistant/components/fibaro/climate.py
@@ -15,12 +15,7 @@ from homeassistant.components.climate import (
     HVACMode,
 )
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import (
-    ATTR_TEMPERATURE,
-    TEMP_CELSIUS,
-    TEMP_FAHRENHEIT,
-    Platform,
-)
+from homeassistant.const import ATTR_TEMPERATURE, Platform, UnitOfTemperature
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
@@ -175,9 +170,9 @@ class FibaroThermostat(FibaroDevice, ClimateEntity):
                 self._attr_supported_features |= ClimateEntityFeature.FAN_MODE
 
         if tempunit == "F":
-            self._attr_temperature_unit = TEMP_FAHRENHEIT
+            self._attr_temperature_unit = UnitOfTemperature.FAHRENHEIT
         else:
-            self._attr_temperature_unit = TEMP_CELSIUS
+            self._attr_temperature_unit = UnitOfTemperature.CELSIUS
 
         if self._fan_mode_device:
             fan_modes = (
diff --git a/homeassistant/components/flexit/climate.py b/homeassistant/components/flexit/climate.py
index 27f2314c1f28..ac8f4b4da8c3 100644
--- a/homeassistant/components/flexit/climate.py
+++ b/homeassistant/components/flexit/climate.py
@@ -27,7 +27,7 @@ from homeassistant.const import (
     CONF_NAME,
     CONF_SLAVE,
     DEVICE_DEFAULT_NAME,
-    TEMP_CELSIUS,
+    UnitOfTemperature,
 )
 from homeassistant.core import HomeAssistant
 import homeassistant.helpers.config_validation as cv
@@ -67,7 +67,7 @@ class Flexit(ClimateEntity):
     _attr_supported_features = (
         ClimateEntityFeature.TARGET_TEMPERATURE | ClimateEntityFeature.FAN_MODE
     )
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
 
     def __init__(
         self, hub: ModbusHub, modbus_slave: int | None, name: str | None
diff --git a/homeassistant/components/freedompro/climate.py b/homeassistant/components/freedompro/climate.py
index 0b5f147c1415..0ec08f0fdd04 100644
--- a/homeassistant/components/freedompro/climate.py
+++ b/homeassistant/components/freedompro/climate.py
@@ -15,7 +15,7 @@ from homeassistant.components.climate import (
     HVACMode,
 )
 from homeassistant.config_entries import ConfigEntry
-from homeassistant.const import ATTR_TEMPERATURE, CONF_API_KEY, TEMP_CELSIUS
+from homeassistant.const import ATTR_TEMPERATURE, CONF_API_KEY, UnitOfTemperature
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers import aiohttp_client
 from homeassistant.helpers.entity import DeviceInfo
@@ -61,7 +61,7 @@ class Device(CoordinatorEntity[FreedomproDataUpdateCoordinator], ClimateEntity):
     """Representation of an Freedompro climate."""
 
     _attr_hvac_modes = SUPPORTED_HVAC_MODES
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
 
     def __init__(
         self,
diff --git a/homeassistant/components/fritzbox/climate.py b/homeassistant/components/fritzbox/climate.py
index b1898c41cc7d..31cdac47ec2c 100644
--- a/homeassistant/components/fritzbox/climate.py
+++ b/homeassistant/components/fritzbox/climate.py
@@ -16,7 +16,7 @@ from homeassistant.const import (
     ATTR_BATTERY_LEVEL,
     ATTR_TEMPERATURE,
     PRECISION_HALVES,
-    TEMP_CELSIUS,
+    UnitOfTemperature,
 )
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
@@ -70,7 +70,7 @@ class FritzboxThermostat(FritzBoxDeviceEntity, ClimateEntity):
     _attr_supported_features = (
         ClimateEntityFeature.TARGET_TEMPERATURE | ClimateEntityFeature.PRESET_MODE
     )
-    _attr_temperature_unit = TEMP_CELSIUS
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
 
     @property
     def current_temperature(self) -> float: