diff --git a/homeassistant/components/adax/climate.py b/homeassistant/components/adax/climate.py
index 74e973ba6d5..1abd83fdbfc 100644
--- a/homeassistant/components/adax/climate.py
+++ b/homeassistant/components/adax/climate.py
@@ -49,20 +49,19 @@ async def async_setup_entry(
 class AdaxDevice(ClimateEntity):
     """Representation of a heater."""
 
+    _attr_hvac_modes = [HVAC_MODE_HEAT, HVAC_MODE_OFF]
+    _attr_max_temp = 35
+    _attr_min_temp = 5
+    _attr_supported_features = SUPPORT_TARGET_TEMPERATURE
+    _attr_target_temperature_step = PRECISION_WHOLE
+    _attr_temperature_unit = TEMP_CELSIUS
+
     def __init__(self, heater_data: dict[str, Any], adax_data_handler: Adax) -> None:
         """Initialize the heater."""
         self._heater_data = heater_data
         self._adax_data_handler = adax_data_handler
 
-    @property
-    def supported_features(self) -> int:
-        """Return the list of supported features."""
-        return SUPPORT_TARGET_TEMPERATURE
-
-    @property
-    def unique_id(self) -> str:
-        """Return a unique ID."""
-        return f"{self._heater_data['homeId']}_{self._heater_data['id']}"
+        self._attr_unique_id = f"{heater_data['homeId']}_{heater_data['id']}"
 
     @property
     def name(self) -> str:
@@ -83,11 +82,6 @@ class AdaxDevice(ClimateEntity):
             return "mdi:radiator"
         return "mdi:radiator-off"
 
-    @property
-    def hvac_modes(self) -> list[str]:
-        """Return the list of available hvac operation modes."""
-        return [HVAC_MODE_HEAT, HVAC_MODE_OFF]
-
     async def async_set_hvac_mode(self, hvac_mode: str) -> None:
         """Set hvac mode."""
         if hvac_mode == HVAC_MODE_HEAT:
@@ -105,21 +99,6 @@ class AdaxDevice(ClimateEntity):
             return
         await self._adax_data_handler.update()
 
-    @property
-    def temperature_unit(self) -> str:
-        """Return the unit of measurement which this device uses."""
-        return TEMP_CELSIUS
-
-    @property
-    def min_temp(self) -> int:
-        """Return the minimum temperature."""
-        return 5
-
-    @property
-    def max_temp(self) -> int:
-        """Return the maximum temperature."""
-        return 35
-
     @property
     def current_temperature(self) -> float | None:
         """Return the current temperature."""
@@ -130,11 +109,6 @@ class AdaxDevice(ClimateEntity):
         """Return the temperature we try to reach."""
         return self._heater_data.get("targetTemperature")
 
-    @property
-    def target_temperature_step(self) -> int:
-        """Return the supported step of target temperature."""
-        return PRECISION_WHOLE
-
     async def async_set_temperature(self, **kwargs: Any) -> None:
         """Set new target temperature."""
         temperature = kwargs.get(ATTR_TEMPERATURE)