diff --git a/homeassistant/components/evohome/__init__.py b/homeassistant/components/evohome/__init__.py
index 98d72f828ae..5f83caa8648 100644
--- a/homeassistant/components/evohome/__init__.py
+++ b/homeassistant/components/evohome/__init__.py
@@ -524,7 +524,6 @@ class EvoDevice(Entity):
         self._evo_tcs = evo_broker.tcs
 
         self._unique_id = self._name = self._icon = self._precision = None
-        self._supported_features = None
         self._device_state_attrs = {}
 
     async def async_refresh(self, payload: dict | None = None) -> None:
@@ -580,11 +579,6 @@ class EvoDevice(Entity):
         """Return the icon to use in the frontend UI."""
         return self._icon
 
-    @property
-    def supported_features(self) -> int:
-        """Get the flag of supported features of the device."""
-        return self._supported_features
-
     async def async_added_to_hass(self) -> None:
         """Run when entity about to be added to hass."""
         async_dispatcher_connect(self.hass, DOMAIN, self.async_refresh)
diff --git a/homeassistant/components/evohome/climate.py b/homeassistant/components/evohome/climate.py
index fa1063f846d..e66c0fcdf6a 100644
--- a/homeassistant/components/evohome/climate.py
+++ b/homeassistant/components/evohome/climate.py
@@ -4,7 +4,7 @@ from __future__ import annotations
 from datetime import datetime as dt
 import logging
 
-from homeassistant.components.climate import ClimateEntity
+from homeassistant.components.climate import ClimateEntity, ClimateEntityFeature
 from homeassistant.components.climate.const import (
     HVAC_MODE_AUTO,
     HVAC_MODE_HEAT,
@@ -13,8 +13,6 @@ from homeassistant.components.climate.const import (
     PRESET_ECO,
     PRESET_HOME,
     PRESET_NONE,
-    SUPPORT_PRESET_MODE,
-    SUPPORT_TARGET_TEMPERATURE,
 )
 from homeassistant.const import PRECISION_TENTHS
 from homeassistant.core import HomeAssistant
@@ -167,7 +165,9 @@ class EvoZone(EvoChild, EvoClimateEntity):
             self._precision = self._evo_device.setpointCapabilities["valueResolution"]
 
         self._preset_modes = list(HA_PRESET_TO_EVO)
-        self._supported_features = SUPPORT_PRESET_MODE | SUPPORT_TARGET_TEMPERATURE
+        self._attr_supported_features = (
+            ClimateEntityFeature.PRESET_MODE | ClimateEntityFeature.TARGET_TEMPERATURE
+        )
 
     async def async_zone_svc_request(self, service: dict, data: dict) -> None:
         """Process a service request (setpoint override) for a zone."""
@@ -328,7 +328,9 @@ class EvoController(EvoClimateEntity):
         self._preset_modes = [
             TCS_PRESET_TO_HA[m] for m in modes if m in list(TCS_PRESET_TO_HA)
         ]
-        self._supported_features = SUPPORT_PRESET_MODE if self._preset_modes else 0
+        self._attr_supported_features = (
+            ClimateEntityFeature.PRESET_MODE if self._preset_modes else 0
+        )
 
     async def async_tcs_svc_request(self, service: dict, data: dict) -> None:
         """Process a service request (system mode) for a controller.
diff --git a/homeassistant/components/evohome/water_heater.py b/homeassistant/components/evohome/water_heater.py
index 217aa780685..f216862b232 100644
--- a/homeassistant/components/evohome/water_heater.py
+++ b/homeassistant/components/evohome/water_heater.py
@@ -4,9 +4,8 @@ from __future__ import annotations
 import logging
 
 from homeassistant.components.water_heater import (
-    SUPPORT_AWAY_MODE,
-    SUPPORT_OPERATION_MODE,
     WaterHeaterEntity,
+    WaterHeaterEntityFeature,
 )
 from homeassistant.const import PRECISION_TENTHS, PRECISION_WHOLE, STATE_OFF, STATE_ON
 from homeassistant.core import HomeAssistant
@@ -61,7 +60,9 @@ class EvoDHW(EvoChild, WaterHeaterEntity):
         self._icon = "mdi:thermometer-lines"
 
         self._precision = PRECISION_TENTHS if evo_broker.client_v1 else PRECISION_WHOLE
-        self._supported_features = SUPPORT_AWAY_MODE | SUPPORT_OPERATION_MODE
+        self._attr_supported_features = (
+            WaterHeaterEntityFeature.AWAY_MODE | WaterHeaterEntityFeature.OPERATION_MODE
+        )
 
     @property
     def current_operation(self) -> str: