diff --git a/.coveragerc b/.coveragerc
index 696cd5ce3b0..360bd5f6911 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -870,6 +870,8 @@ omit =
     homeassistant/components/overkiz/__init__.py
     homeassistant/components/overkiz/binary_sensor.py
     homeassistant/components/overkiz/button.py
+    homeassistant/components/overkiz/climate.py
+    homeassistant/components/overkiz/climate_entities/*
     homeassistant/components/overkiz/cover.py
     homeassistant/components/overkiz/cover_entities/*
     homeassistant/components/overkiz/coordinator.py
diff --git a/homeassistant/components/overkiz/climate.py b/homeassistant/components/overkiz/climate.py
new file mode 100644
index 00000000000..a94c731ec8f
--- /dev/null
+++ b/homeassistant/components/overkiz/climate.py
@@ -0,0 +1,26 @@
+"""Support for Overkiz climate devices."""
+from __future__ import annotations
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import Platform
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from . import HomeAssistantOverkizData
+from .climate_entities import WIDGET_TO_CLIMATE_ENTITY
+from .const import DOMAIN
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up the Overkiz climate from a config entry."""
+    data: HomeAssistantOverkizData = hass.data[DOMAIN][entry.entry_id]
+
+    async_add_entities(
+        WIDGET_TO_CLIMATE_ENTITY[device.widget](device.device_url, data.coordinator)
+        for device in data.platforms[Platform.CLIMATE]
+        if device.widget in WIDGET_TO_CLIMATE_ENTITY
+    )
diff --git a/homeassistant/components/overkiz/climate_entities/__init__.py b/homeassistant/components/overkiz/climate_entities/__init__.py
new file mode 100644
index 00000000000..0e98b7c7e21
--- /dev/null
+++ b/homeassistant/components/overkiz/climate_entities/__init__.py
@@ -0,0 +1,8 @@
+"""Climate entities for the Overkiz (by Somfy) integration."""
+from pyoverkiz.enums.ui import UIWidget
+
+from .atlantic_electrical_heater import AtlanticElectricalHeater
+
+WIDGET_TO_CLIMATE_ENTITY = {
+    UIWidget.ATLANTIC_ELECTRICAL_HEATER: AtlanticElectricalHeater,
+}
diff --git a/homeassistant/components/overkiz/climate_entities/atlantic_electrical_heater.py b/homeassistant/components/overkiz/climate_entities/atlantic_electrical_heater.py
new file mode 100644
index 00000000000..8756b768e52
--- /dev/null
+++ b/homeassistant/components/overkiz/climate_entities/atlantic_electrical_heater.py
@@ -0,0 +1,73 @@
+"""Support for Atlantic Electrical Heater."""
+from __future__ import annotations
+
+from typing import cast
+
+from pyoverkiz.enums import OverkizCommand, OverkizCommandParam, OverkizState
+
+from homeassistant.components.climate import (
+    HVAC_MODE_OFF,
+    SUPPORT_PRESET_MODE,
+    ClimateEntity,
+)
+from homeassistant.components.climate.const import (
+    HVAC_MODE_HEAT,
+    PRESET_COMFORT,
+    PRESET_ECO,
+    PRESET_NONE,
+)
+from homeassistant.components.overkiz.entity import OverkizEntity
+from homeassistant.const import TEMP_CELSIUS
+
+PRESET_FROST_PROTECTION = "frost_protection"
+
+OVERKIZ_TO_HVAC_MODES: dict[str, str] = {
+    OverkizCommandParam.ON: HVAC_MODE_HEAT,
+    OverkizCommandParam.COMFORT: HVAC_MODE_HEAT,
+    OverkizCommandParam.OFF: HVAC_MODE_OFF,
+}
+HVAC_MODES_TO_OVERKIZ = {v: k for k, v in OVERKIZ_TO_HVAC_MODES.items()}
+
+OVERKIZ_TO_PRESET_MODES: dict[str, str] = {
+    OverkizCommandParam.OFF: PRESET_NONE,
+    OverkizCommandParam.FROSTPROTECTION: PRESET_FROST_PROTECTION,
+    OverkizCommandParam.ECO: PRESET_ECO,
+    OverkizCommandParam.COMFORT: PRESET_COMFORT,
+}
+
+PRESET_MODES_TO_OVERKIZ = {v: k for k, v in OVERKIZ_TO_PRESET_MODES.items()}
+
+
+class AtlanticElectricalHeater(OverkizEntity, ClimateEntity):
+    """Representation of Atlantic Electrical Heater."""
+
+    _attr_hvac_modes = [*HVAC_MODES_TO_OVERKIZ]
+    _attr_preset_modes = [*PRESET_MODES_TO_OVERKIZ]
+    _attr_supported_features = SUPPORT_PRESET_MODE
+    _attr_temperature_unit = TEMP_CELSIUS
+
+    @property
+    def hvac_mode(self) -> str:
+        """Return hvac operation ie. heat, cool mode."""
+        return OVERKIZ_TO_HVAC_MODES[
+            cast(str, self.executor.select_state(OverkizState.CORE_ON_OFF))
+        ]
+
+    async def async_set_hvac_mode(self, hvac_mode: str) -> None:
+        """Set new target hvac mode."""
+        await self.executor.async_execute_command(
+            OverkizCommand.SET_HEATING_LEVEL, HVAC_MODES_TO_OVERKIZ[hvac_mode]
+        )
+
+    @property
+    def preset_mode(self) -> str | None:
+        """Return the current preset mode, e.g., home, away, temp."""
+        return OVERKIZ_TO_PRESET_MODES[
+            cast(str, self.executor.select_state(OverkizState.IO_TARGET_HEATING_LEVEL))
+        ]
+
+    async def async_set_preset_mode(self, preset_mode: str) -> None:
+        """Set new preset mode."""
+        await self.executor.async_execute_command(
+            OverkizCommand.SET_HEATING_LEVEL, PRESET_MODES_TO_OVERKIZ[preset_mode]
+        )
diff --git a/homeassistant/components/overkiz/const.py b/homeassistant/components/overkiz/const.py
index 60a9163df5f..7f031ef3b6a 100644
--- a/homeassistant/components/overkiz/const.py
+++ b/homeassistant/components/overkiz/const.py
@@ -21,6 +21,7 @@ UPDATE_INTERVAL_ALL_ASSUMED_STATE: Final = timedelta(minutes=60)
 PLATFORMS: list[Platform] = [
     Platform.BINARY_SENSOR,
     Platform.BUTTON,
+    Platform.CLIMATE,
     Platform.COVER,
     Platform.LIGHT,
     Platform.LOCK,
@@ -57,6 +58,7 @@ OVERKIZ_DEVICE_TO_PLATFORM: dict[UIClass | UIWidget, Platform | None] = {
     UIClass.SWINGING_SHUTTER: Platform.COVER,
     UIClass.VENETIAN_BLIND: Platform.COVER,
     UIClass.WINDOW: Platform.COVER,
+    UIWidget.ATLANTIC_ELECTRICAL_HEATER: Platform.CLIMATE,  # widgetName, uiClass is HeatingSystem (not supported)
     UIWidget.DOMESTIC_HOT_WATER_TANK: Platform.SWITCH,  # widgetName, uiClass is WaterHeatingSystem (not supported)
     UIWidget.MY_FOX_SECURITY_CAMERA: Platform.SWITCH,  # widgetName, uiClass is Camera (not supported)
     UIWidget.RTD_INDOOR_SIREN: Platform.SWITCH,  # widgetName, uiClass is Siren (not supported)