diff --git a/homeassistant/components/airzone/climate.py b/homeassistant/components/airzone/climate.py
index c45f68d3d403..3be951acfb2a 100644
--- a/homeassistant/components/airzone/climate.py
+++ b/homeassistant/components/airzone/climate.py
@@ -25,6 +25,7 @@ from aioairzone.const import (
     AZD_TEMP_MAX,
     AZD_TEMP_MIN,
     AZD_TEMP_SET,
+    AZD_TEMP_STEP,
     AZD_TEMP_UNIT,
     AZD_ZONES,
 )
@@ -48,7 +49,7 @@ from homeassistant.core import HomeAssistant, callback
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
 
-from .const import API_TEMPERATURE_STEP, TEMP_UNIT_LIB_TO_HASS
+from .const import TEMP_UNIT_LIB_TO_HASS
 from .coordinator import AirzoneConfigEntry, AirzoneUpdateCoordinator
 from .entity import AirzoneZoneEntity
 
@@ -150,7 +151,7 @@ class AirzoneClimate(AirzoneZoneEntity, ClimateEntity):
             | ClimateEntityFeature.TURN_OFF
             | ClimateEntityFeature.TURN_ON
         )
-        self._attr_target_temperature_step = API_TEMPERATURE_STEP
+        self._attr_target_temperature_step = self.get_airzone_value(AZD_TEMP_STEP)
         self._attr_temperature_unit = TEMP_UNIT_LIB_TO_HASS[
             self.get_airzone_value(AZD_TEMP_UNIT)
         ]
diff --git a/homeassistant/components/airzone/const.py b/homeassistant/components/airzone/const.py
index 2263d5ab4a3a..6d6873f9e139 100644
--- a/homeassistant/components/airzone/const.py
+++ b/homeassistant/components/airzone/const.py
@@ -10,7 +10,6 @@ DOMAIN: Final = "airzone"
 MANUFACTURER: Final = "Airzone"
 
 AIOAIRZONE_DEVICE_TIMEOUT_SEC: Final = 10
-API_TEMPERATURE_STEP: Final = 0.5
 
 TEMP_UNIT_LIB_TO_HASS: Final[dict[TemperatureUnit, str]] = {
     TemperatureUnit.CELSIUS: UnitOfTemperature.CELSIUS,
diff --git a/tests/components/airzone/snapshots/test_diagnostics.ambr b/tests/components/airzone/snapshots/test_diagnostics.ambr
index 19c05f52d8dc..316a6c01d458 100644
--- a/tests/components/airzone/snapshots/test_diagnostics.ambr
+++ b/tests/components/airzone/snapshots/test_diagnostics.ambr
@@ -36,6 +36,7 @@
                 'speed': 0,
                 'speeds': 3,
                 'systemID': 1,
+                'temp_step': 1,
                 'thermos_firmware': '3.51',
                 'thermos_radio': 0,
                 'thermos_type': 2,
@@ -446,7 +447,7 @@
           'temp-max': 30.0,
           'temp-min': 15.0,
           'temp-set': 19.1,
-          'temp-step': 0.5,
+          'temp-step': 1.0,
           'temp-unit': 0,
           'thermostat-fw': '3.51',
           'thermostat-model': 'Blueface Zero',
diff --git a/tests/components/airzone/test_climate.py b/tests/components/airzone/test_climate.py
index 12a73a6a268d..7c08a5bc92c4 100644
--- a/tests/components/airzone/test_climate.py
+++ b/tests/components/airzone/test_climate.py
@@ -19,7 +19,6 @@ from aioairzone.const import (
 from aioairzone.exceptions import AirzoneError
 import pytest
 
-from homeassistant.components.airzone.const import API_TEMPERATURE_STEP
 from homeassistant.components.airzone.coordinator import SCAN_INTERVAL
 from homeassistant.components.climate import (
     ATTR_CURRENT_HUMIDITY,
@@ -87,7 +86,7 @@ async def test_airzone_create_climates(hass: HomeAssistant) -> None:
     ]
     assert state.attributes.get(ATTR_MAX_TEMP) == 30
     assert state.attributes.get(ATTR_MIN_TEMP) == 15
-    assert state.attributes.get(ATTR_TARGET_TEMP_STEP) == API_TEMPERATURE_STEP
+    assert state.attributes.get(ATTR_TARGET_TEMP_STEP) == 1.0
     assert state.attributes.get(ATTR_TEMPERATURE) == 19.4
 
     state = hass.states.get("climate.dorm_1")
@@ -106,7 +105,7 @@ async def test_airzone_create_climates(hass: HomeAssistant) -> None:
     ]
     assert state.attributes.get(ATTR_MAX_TEMP) == 30
     assert state.attributes.get(ATTR_MIN_TEMP) == 15
-    assert state.attributes.get(ATTR_TARGET_TEMP_STEP) == API_TEMPERATURE_STEP
+    assert state.attributes.get(ATTR_TARGET_TEMP_STEP) == 0.5
     assert state.attributes.get(ATTR_TEMPERATURE) == 19.3
 
     state = hass.states.get("climate.dorm_2")
@@ -125,7 +124,7 @@ async def test_airzone_create_climates(hass: HomeAssistant) -> None:
     ]
     assert state.attributes.get(ATTR_MAX_TEMP) == 30
     assert state.attributes.get(ATTR_MIN_TEMP) == 15
-    assert state.attributes.get(ATTR_TARGET_TEMP_STEP) == API_TEMPERATURE_STEP
+    assert state.attributes.get(ATTR_TARGET_TEMP_STEP) == 0.5
     assert state.attributes.get(ATTR_TEMPERATURE) == 19.5
 
     state = hass.states.get("climate.dorm_ppal")
@@ -148,7 +147,7 @@ async def test_airzone_create_climates(hass: HomeAssistant) -> None:
     ]
     assert state.attributes.get(ATTR_MAX_TEMP) == 30
     assert state.attributes.get(ATTR_MIN_TEMP) == 15
-    assert state.attributes.get(ATTR_TARGET_TEMP_STEP) == API_TEMPERATURE_STEP
+    assert state.attributes.get(ATTR_TARGET_TEMP_STEP) == 0.5
     assert state.attributes.get(ATTR_TEMPERATURE) == 19.2
 
     state = hass.states.get("climate.salon")
@@ -172,7 +171,7 @@ async def test_airzone_create_climates(hass: HomeAssistant) -> None:
     ]
     assert state.attributes.get(ATTR_MAX_TEMP) == 30
     assert state.attributes.get(ATTR_MIN_TEMP) == 15
-    assert state.attributes.get(ATTR_TARGET_TEMP_STEP) == API_TEMPERATURE_STEP
+    assert state.attributes.get(ATTR_TARGET_TEMP_STEP) == 1.0
     assert state.attributes.get(ATTR_TEMPERATURE) == 19.1
 
     state = hass.states.get("climate.airzone_2_1")
@@ -194,7 +193,7 @@ async def test_airzone_create_climates(hass: HomeAssistant) -> None:
     ]
     assert state.attributes.get(ATTR_MAX_TEMP) == 30
     assert state.attributes.get(ATTR_MIN_TEMP) == 15
-    assert state.attributes.get(ATTR_TARGET_TEMP_STEP) == API_TEMPERATURE_STEP
+    assert state.attributes.get(ATTR_TARGET_TEMP_STEP) == 0.5
     assert state.attributes.get(ATTR_TEMPERATURE) == 19.0
 
     state = hass.states.get("climate.dkn_plus")
@@ -221,7 +220,7 @@ async def test_airzone_create_climates(hass: HomeAssistant) -> None:
     ]
     assert state.attributes.get(ATTR_MAX_TEMP) == 32.2
     assert state.attributes.get(ATTR_MIN_TEMP) == 17.8
-    assert state.attributes.get(ATTR_TARGET_TEMP_STEP) == API_TEMPERATURE_STEP
+    assert state.attributes.get(ATTR_TARGET_TEMP_STEP) == 1.0
     assert state.attributes.get(ATTR_TARGET_TEMP_HIGH) == 25.0
     assert state.attributes.get(ATTR_TARGET_TEMP_LOW) == 22.8
 
@@ -239,7 +238,7 @@ async def test_airzone_create_climates(hass: HomeAssistant) -> None:
     ]
     assert state.attributes.get(ATTR_MAX_TEMP) == 30
     assert state.attributes.get(ATTR_MIN_TEMP) == 15
-    assert state.attributes.get(ATTR_TARGET_TEMP_STEP) == API_TEMPERATURE_STEP
+    assert state.attributes.get(ATTR_TARGET_TEMP_STEP) == 0.5
     assert state.attributes.get(ATTR_TEMPERATURE) == 20.0
 
     HVAC_MOCK_CHANGED = copy.deepcopy(HVAC_MOCK)
diff --git a/tests/components/airzone/util.py b/tests/components/airzone/util.py
index 7c35b39010a4..54982f66327a 100644
--- a/tests/components/airzone/util.py
+++ b/tests/components/airzone/util.py
@@ -48,6 +48,7 @@ from aioairzone.const import (
     API_SYSTEM_ID,
     API_SYSTEM_TYPE,
     API_SYSTEMS,
+    API_TEMP_STEP,
     API_THERMOS_FIRMWARE,
     API_THERMOS_RADIO,
     API_THERMOS_TYPE,
@@ -96,6 +97,7 @@ HVAC_MOCK = {
                     API_ON: 0,
                     API_MAX_TEMP: 30,
                     API_MIN_TEMP: 15,
+                    API_TEMP_STEP: 1,
                     API_SET_POINT: 19.1,
                     API_ROOM_TEMP: 19.6,
                     API_SLEEP: 0,