diff --git a/CODEOWNERS b/CODEOWNERS
index bf93676f962..4f8c03fe90f 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -1051,8 +1051,8 @@ build.json @home-assistant/supervisor
 /tests/components/otbr/ @home-assistant/core
 /homeassistant/components/ourgroceries/ @OnFreund
 /tests/components/ourgroceries/ @OnFreund
-/homeassistant/components/overkiz/ @imicknl @vlebourl @tetienne @nyroDev @tronix117
-/tests/components/overkiz/ @imicknl @vlebourl @tetienne @nyroDev @tronix117
+/homeassistant/components/overkiz/ @imicknl @vlebourl @tetienne @nyroDev @tronix117 @alexfp14
+/tests/components/overkiz/ @imicknl @vlebourl @tetienne @nyroDev @tronix117 @alexfp14
 /homeassistant/components/ovo_energy/ @timmo001
 /tests/components/ovo_energy/ @timmo001
 /homeassistant/components/p1_monitor/ @klaasnicolaas
diff --git a/homeassistant/components/overkiz/climate_entities/__init__.py b/homeassistant/components/overkiz/climate_entities/__init__.py
index df997f7a68e..ac864686432 100644
--- a/homeassistant/components/overkiz/climate_entities/__init__.py
+++ b/homeassistant/components/overkiz/climate_entities/__init__.py
@@ -11,6 +11,9 @@ from .atlantic_electrical_heater_with_adjustable_temperature_setpoint import (
 )
 from .atlantic_electrical_towel_dryer import AtlanticElectricalTowelDryer
 from .atlantic_heat_recovery_ventilation import AtlanticHeatRecoveryVentilation
+from .atlantic_pass_apc_heat_pump_main_component import (
+    AtlanticPassAPCHeatPumpMainComponent,
+)
 from .atlantic_pass_apc_heating_zone import AtlanticPassAPCHeatingZone
 from .atlantic_pass_apc_zone_control import AtlanticPassAPCZoneControl
 from .atlantic_pass_apc_zone_control_zone import AtlanticPassAPCZoneControlZone
@@ -43,6 +46,7 @@ WIDGET_TO_CLIMATE_ENTITY = {
     UIWidget.SOMFY_HEATING_TEMPERATURE_INTERFACE: SomfyHeatingTemperatureInterface,
     UIWidget.SOMFY_THERMOSTAT: SomfyThermostat,
     UIWidget.VALVE_HEATING_TEMPERATURE_INTERFACE: ValveHeatingTemperatureInterface,
+    UIWidget.ATLANTIC_PASS_APC_HEAT_PUMP: AtlanticPassAPCHeatPumpMainComponent,
 }
 
 # For Atlantic APC, some devices are standalone and control themselves, some others needs to be
diff --git a/homeassistant/components/overkiz/climate_entities/atlantic_pass_apc_heat_pump_main_component.py b/homeassistant/components/overkiz/climate_entities/atlantic_pass_apc_heat_pump_main_component.py
new file mode 100644
index 00000000000..1cd13205b13
--- /dev/null
+++ b/homeassistant/components/overkiz/climate_entities/atlantic_pass_apc_heat_pump_main_component.py
@@ -0,0 +1,65 @@
+"""Support for Atlantic Pass APC Heat Pump Main Component."""
+
+from __future__ import annotations
+
+from asyncio import sleep
+from typing import cast
+
+from pyoverkiz.enums import OverkizCommand, OverkizCommandParam, OverkizState
+
+from homeassistant.components.climate import (
+    ClimateEntity,
+    ClimateEntityFeature,
+    HVACMode,
+)
+from homeassistant.const import UnitOfTemperature
+
+from ..const import DOMAIN
+from ..entity import OverkizEntity
+
+OVERKIZ_TO_HVAC_MODES: dict[str, HVACMode] = {
+    OverkizCommandParam.STOP: HVACMode.OFF,
+    OverkizCommandParam.HEATING: HVACMode.HEAT,
+    OverkizCommandParam.COOLING: HVACMode.COOL,
+}
+
+HVAC_MODES_TO_OVERKIZ = {v: k for k, v in OVERKIZ_TO_HVAC_MODES.items()}
+
+
+class AtlanticPassAPCHeatPumpMainComponent(OverkizEntity, ClimateEntity):
+    """Representation of Atlantic Pass APC Heat Pump Main Component.
+
+    This component can only turn off the heating pump and select the working mode: heating or cooling.
+    To set new temperatures, they must be selected individually per Zones (ie: AtlanticPassAPCHeatingAndCoolingZone).
+    Once the Device is switched on into heating or cooling mode, the Heat Pump will be activated and will use
+    the default temperature configuration for each available zone.
+    """
+
+    _attr_hvac_modes = [*HVAC_MODES_TO_OVERKIZ]
+    _attr_supported_features = (
+        ClimateEntityFeature.TURN_OFF | ClimateEntityFeature.TURN_ON
+    )
+    _attr_temperature_unit = UnitOfTemperature.CELSIUS
+    _attr_translation_key = DOMAIN
+    _enable_turn_on_off_backwards_compatibility = False
+
+    @property
+    def hvac_mode(self) -> HVACMode:
+        """Return hvac current mode: stop, cooling, heating."""
+        return OVERKIZ_TO_HVAC_MODES[
+            cast(
+                str, self.executor.select_state(OverkizState.IO_PASS_APC_OPERATING_MODE)
+            )
+        ]
+
+    async def async_set_hvac_mode(self, hvac_mode: HVACMode) -> None:
+        """Set new target hvac mode: stop, cooling, heating."""
+        # They are mainly managed by the Zone Control device
+        # However, we can turn off or put the heat pump in cooling/ heating mode.
+        await self.executor.async_execute_command(
+            OverkizCommand.SET_PASS_APC_OPERATING_MODE,
+            HVAC_MODES_TO_OVERKIZ[hvac_mode],
+        )
+
+        # Wait for 2 seconds to ensure the HVAC mode change is properly applied and system stabilizes.
+        await sleep(2)
diff --git a/homeassistant/components/overkiz/const.py b/homeassistant/components/overkiz/const.py
index 59acc4ac232..a90260e0f0f 100644
--- a/homeassistant/components/overkiz/const.py
+++ b/homeassistant/components/overkiz/const.py
@@ -95,6 +95,7 @@ OVERKIZ_DEVICE_TO_PLATFORM: dict[UIClass | UIWidget, Platform | None] = {
     UIWidget.ATLANTIC_ELECTRICAL_TOWEL_DRYER: Platform.CLIMATE,  # widgetName, uiClass is HeatingSystem (not supported)
     UIWidget.ATLANTIC_HEAT_RECOVERY_VENTILATION: Platform.CLIMATE,  # widgetName, uiClass is HeatingSystem (not supported)
     UIWidget.ATLANTIC_PASS_APC_DHW: Platform.WATER_HEATER,  # widgetName, uiClass is WaterHeatingSystem (not supported)
+    UIWidget.ATLANTIC_PASS_APC_HEAT_PUMP: Platform.CLIMATE,  # widgetName, uiClass is HeatingSystem (not supported)
     UIWidget.ATLANTIC_PASS_APC_HEATING_AND_COOLING_ZONE: Platform.CLIMATE,  # widgetName, uiClass is HeatingSystem (not supported)
     UIWidget.ATLANTIC_PASS_APC_HEATING_ZONE: Platform.CLIMATE,  # widgetName, uiClass is HeatingSystem (not supported)
     UIWidget.ATLANTIC_PASS_APC_ZONE_CONTROL: Platform.CLIMATE,  # widgetName, uiClass is HeatingSystem (not supported)
diff --git a/homeassistant/components/overkiz/manifest.json b/homeassistant/components/overkiz/manifest.json
index 8825c09e0ff..19850f0b57e 100644
--- a/homeassistant/components/overkiz/manifest.json
+++ b/homeassistant/components/overkiz/manifest.json
@@ -6,7 +6,8 @@
     "@vlebourl",
     "@tetienne",
     "@nyroDev",
-    "@tronix117"
+    "@tronix117",
+    "@alexfp14"
   ],
   "config_flow": true,
   "dhcp": [