diff --git a/CODEOWNERS b/CODEOWNERS
index dc2eb6367493..5777712c1e8c 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -294,6 +294,8 @@ CLAUDE.md @home-assistant/core
 /tests/components/chacon_dio/ @cnico
 /homeassistant/components/chess_com/ @joostlek
 /tests/components/chess_com/ @joostlek
+/homeassistant/components/cielo_home/ @ihsan-cielo @mudasar-cielo
+/tests/components/cielo_home/ @ihsan-cielo @mudasar-cielo
 /homeassistant/components/cisco_ios/ @fbradyirl
 /homeassistant/components/cisco_mobility_express/ @fbradyirl
 /homeassistant/components/cisco_webex_teams/ @fbradyirl
diff --git a/homeassistant/components/cielo_home/__init__.py b/homeassistant/components/cielo_home/__init__.py
new file mode 100644
index 000000000000..b6fe3adfd760
--- /dev/null
+++ b/homeassistant/components/cielo_home/__init__.py
@@ -0,0 +1,26 @@
+"""Integration for Cielo Home."""
+
+from __future__ import annotations
+
+from homeassistant.core import HomeAssistant
+
+from .const import PLATFORMS
+from .coordinator import CieloDataUpdateCoordinator, CieloHomeConfigEntry
+
+
+async def async_setup_entry(hass: HomeAssistant, entry: CieloHomeConfigEntry) -> bool:
+    """Set up Cielo Home from a config entry."""
+    coordinator = CieloDataUpdateCoordinator(hass, entry)
+    await coordinator.async_config_entry_first_refresh()
+
+    entry.runtime_data = coordinator
+
+    await hass.config_entries.async_forward_entry_setups(entry, PLATFORMS)
+    return True
+
+
+async def async_unload_entry(hass: HomeAssistant, entry: CieloHomeConfigEntry) -> bool:
+    """Unload a config entry."""
+    coordinator = entry.runtime_data
+    await coordinator.async_shutdown()
+    return await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
diff --git a/homeassistant/components/cielo_home/climate.py b/homeassistant/components/cielo_home/climate.py
new file mode 100644
index 000000000000..00c56a9d9986
--- /dev/null
+++ b/homeassistant/components/cielo_home/climate.py
@@ -0,0 +1,313 @@
+"""Support for Cielo home thermostats and Smart AC Controllers."""
+
+from __future__ import annotations
+
+import asyncio
+from collections.abc import Callable, Coroutine
+from typing import Any, Concatenate, ParamSpec, TypeVar
+
+from cieloconnectapi.exceptions import AuthenticationError
+
+from homeassistant.components.climate import (
+    ATTR_TARGET_TEMP_HIGH,
+    ATTR_TARGET_TEMP_LOW,
+    ClimateEntity,
+    ClimateEntityFeature,
+    HVACMode,
+)
+from homeassistant.const import ATTR_TEMPERATURE, UnitOfTemperature
+from homeassistant.core import HomeAssistant
+from homeassistant.exceptions import ConfigEntryAuthFailed, HomeAssistantError
+from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
+
+from .const import CIELO_ERRORS, LOGGER, TIMEOUT
+from .coordinator import CieloDataUpdateCoordinator, CieloHomeConfigEntry
+from .entity import CieloDeviceEntity
+
+_T = TypeVar("_T", bound="CieloDeviceEntity")
+_P = ParamSpec("_P")
+
+PARALLEL_UPDATES = 0
+
+CIELO_TO_HA_HVAC: dict[str, HVACMode] = {
+    "cool": HVACMode.COOL,
+    "heat": HVACMode.HEAT,
+    "fan": HVACMode.FAN_ONLY,
+    "dry": HVACMode.DRY,
+    "auto": HVACMode.AUTO,
+    "heat_cool": HVACMode.HEAT_COOL,
+    "off": HVACMode.OFF,
+}
+HA_TO_CIELO_HVAC: dict[HVACMode, str] = {v: k for k, v in CIELO_TO_HA_HVAC.items()}
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: CieloHomeConfigEntry,
+    async_add_entities: AddConfigEntryEntitiesCallback,
+) -> None:
+    """Set up the Cielo climate platform."""
+    coordinator = entry.runtime_data
+    devices = coordinator.data.parsed
+    async_add_entities([CieloClimate(coordinator, dev_id) for dev_id in devices])
+
+
+def async_handle_api_call(
+    function: Callable[Concatenate[_T, _P], Coroutine[Any, Any, Any]],
+) -> Callable[Concatenate[_T, _P], Coroutine[Any, Any, Any]]:
+    """Decorate api calls to handle exceptions and update state."""
+
+    async def wrap_api_call(*args: Any, **kwargs: Any) -> None:
+        """Wrap services for api calls."""
+        entity: _T = args[0]
+        res: Any = None
+
+        try:
+            async with asyncio.timeout(TIMEOUT):
+                res = await function(*args, **kwargs)
+        except AuthenticationError as err:
+            raise ConfigEntryAuthFailed from err
+
+        except CIELO_ERRORS as err:
+            if isinstance(err, TimeoutError):
+                raise HomeAssistantError("API call timed out") from err
+            raise HomeAssistantError("Unable to perform API call") from err
+
+        LOGGER.debug(
+            "API call result for entity %s: type=%s keys=%s",
+            entity.entity_id,
+            type(res),
+            list(res.keys()) if isinstance(res, dict) else None,
+        )
+
+        if not isinstance(res, dict):
+            LOGGER.error(
+                "API function did not return a dictionary for entity %s, got %s",
+                entity.entity_id,
+                type(res),
+            )
+            raise HomeAssistantError("Invalid API response format")
+
+        data: dict[str, Any] | None = res.get("data")
+
+        if not data:
+            raise HomeAssistantError("API response contained no data payload")
+
+        await entity.coordinator.async_apply_action_result(entity.device_id, data)
+
+    return wrap_api_call
+
+
+class CieloClimate(CieloDeviceEntity, ClimateEntity):
+    """Representation of a Cielo Smart AC Controller."""
+
+    _attr_name = None
+    _attr_translation_key = "climate_device"
+
+    def __init__(self, coordinator: CieloDataUpdateCoordinator, device_id: str) -> None:
+        """Initialize the climate device."""
+        super().__init__(coordinator, device_id)
+        self._attr_unique_id = device_id
+
+    @property
+    def temperature_unit(self) -> str:
+        """Return the unit of temperature in Home Assistant format.
+
+        It can change over time based on the device settings, so we fetch it dynamically from the client.
+        """
+        unit = self.client.temperature_unit()
+
+        if not unit:
+            return UnitOfTemperature.CELSIUS
+
+        normalized = unit.strip().lower()
+
+        if normalized in {"c", "°c", "celsius"}:
+            return UnitOfTemperature.CELSIUS
+        if normalized in {"f", "°f", "fahrenheit"}:
+            return UnitOfTemperature.FAHRENHEIT
+
+        return UnitOfTemperature.CELSIUS
+
+    @property
+    def supported_features(self) -> ClimateEntityFeature:
+        """Return dynamic feature flags based on the current mode."""
+        flags = ClimateEntityFeature.TURN_OFF | ClimateEntityFeature.TURN_ON
+
+        if self.hvac_mode == HVACMode.HEAT_COOL:
+            flags |= ClimateEntityFeature.TARGET_TEMPERATURE_RANGE
+        elif self.client.mode_supports_temperature():
+            flags |= ClimateEntityFeature.TARGET_TEMPERATURE
+
+        caps = self.client.mode_caps()
+
+        if caps.get("fan_levels"):
+            flags |= ClimateEntityFeature.FAN_MODE
+
+        if caps.get("swing"):
+            flags |= ClimateEntityFeature.SWING_MODE
+
+        if self.device_data and self.device_data.preset_modes:
+            flags |= ClimateEntityFeature.PRESET_MODE
+
+        return flags
+
+    @property
+    def current_humidity(self) -> int | None:
+        """Return the current humidity, if available."""
+        if self.device_data:
+            return self.device_data.humidity
+        return None
+
+    @property
+    def target_temperature_low(self) -> float | None:
+        """Return the low target temperature for HEAT_COOL mode."""
+        return self.client.target_temperature_low(self.temperature_unit)
+
+    @property
+    def target_temperature_high(self) -> float | None:
+        """Return the high target temperature for HEAT_COOL mode."""
+        return self.client.target_temperature_high(self.temperature_unit)
+
+    @property
+    def hvac_mode(self) -> HVACMode | None:
+        """Return the current HVAC mode."""
+        mode = self.client.hvac_mode()
+        return CIELO_TO_HA_HVAC.get(mode, mode)
+
+    @property
+    def hvac_modes(self) -> list[HVACMode]:
+        """Return the list of available HVAC modes."""
+        modes = self.client.hvac_modes() or []
+        return [CIELO_TO_HA_HVAC.get(m, m) for m in modes]
+
+    @property
+    def current_temperature(self) -> float | None:
+        """Return the current indoor temperature."""
+        return self.client.current_temperature()
+
+    @property
+    def target_temperature(self) -> float | None:
+        """Return the target temperature."""
+        return self.client.target_temperature()
+
+    @property
+    def min_temp(self) -> float:
+        """Return the minimum possible target temperature."""
+        return self.client.min_temp()
+
+    @property
+    def max_temp(self) -> float:
+        """Return the maximum possible target temperature."""
+        return self.client.max_temp()
+
+    @property
+    def target_temperature_step(self) -> float | None:
+        """Return the precision of the thermostat."""
+        return self.client.target_temperature_step(self.temperature_unit)
+
+    @property
+    def fan_mode(self) -> str | None:
+        """Return the current fan mode."""
+        return self.client.fan_mode()
+
+    @property
+    def fan_modes(self) -> list[str] | None:
+        """Return the list of available fan modes.
+
+        Fan modes are normalized in the backend to snake_case values that
+        match Home Assistant expectations (e.g. "low", "medium", "high", "auto").
+        This allows HA to translate and display icons correctly using the
+        integration strings definitions.
+        """
+        return self.client.fan_modes()
+
+    @property
+    def swing_modes(self) -> list[str] | None:
+        """Return the list of available swing modes.
+
+        Swing modes are normalized in the backend to snake_case values
+        compatible with Home Assistant (e.g. "auto", "swing").
+        These values align with the integration translations so HA can display
+        proper labels and icons.
+        """
+        return self.client.swing_modes()
+
+    @property
+    def preset_mode(self) -> str | None:
+        """Return the current preset mode."""
+        return self.client.preset_mode()
+
+    @property
+    def preset_modes(self) -> list[str] | None:
+        """Return the list of available preset modes.
+
+        Preset modes are normalized in the backend to snake_case values that
+        match Home Assistant expectations (e.g. "home", "away", "sleep", "pets").
+        This allows HA to translate and display icons correctly using the
+        integration strings definitions.
+        """
+        return self.client.preset_modes()
+
+    @property
+    def swing_mode(self) -> str | None:
+        """Return the current swing mode."""
+        return self.device_data.swing_mode if self.device_data else None
+
+    @property
+    def precision(self) -> float:
+        """Return the precision of the thermostat."""
+        return self.client.precision(self.temperature_unit)
+
+    @async_handle_api_call
+    async def async_set_temperature(self, **kwargs: Any) -> None:
+        """Set new target temperature."""
+        if self.hvac_mode == HVACMode.HEAT_COOL:
+            return await self.client.async_set_temperature(
+                self.temperature_unit,
+                **{
+                    ATTR_TARGET_TEMP_LOW: kwargs.get(ATTR_TARGET_TEMP_LOW),
+                    ATTR_TARGET_TEMP_HIGH: kwargs.get(ATTR_TARGET_TEMP_HIGH),
+                },
+            )
+        return await self.client.async_set_temperature(
+            self.temperature_unit,
+            **{ATTR_TEMPERATURE: kwargs.get(ATTR_TEMPERATURE)},
+        )
+
+    @async_handle_api_call
+    async def async_set_fan_mode(self, fan_mode: str) -> None:
+        """Set new fan mode."""
+        return await self.client.async_set_fan_mode(fan_mode)
+
+    @async_handle_api_call
+    async def async_set_preset_mode(self, preset_mode: str) -> None:
+        """Set new preset mode."""
+        return await self.client.async_set_preset_mode(preset_mode)
+
+    @async_handle_api_call
+    async def async_set_hvac_mode(self, hvac_mode: HVACMode) -> None:
+        """Set new HVAC mode."""
+        cielo_mode = HA_TO_CIELO_HVAC.get(hvac_mode)
+        return await self.client.async_set_hvac_mode(cielo_mode)
+
+    @async_handle_api_call
+    async def async_set_swing_mode(self, swing_mode: str) -> None:
+        """Set new swing mode."""
+        return await self.client.async_set_swing_mode(swing_mode)
+
+    async def async_turn_on(self) -> None:
+        """Turn the climate device on."""
+        modes = self.hvac_modes or []
+
+        # Select the first supported non-off mode when turning on
+        for mode in modes:
+            if mode != HVACMode.OFF:
+                await self.async_set_hvac_mode(mode)
+                return
+
+        raise HomeAssistantError("No non-off HVAC modes available to turn on device")
+
+    async def async_turn_off(self) -> None:
+        """Turn the climate device off."""
+        await self.async_set_hvac_mode(HVACMode.OFF)
diff --git a/homeassistant/components/cielo_home/config_flow.py b/homeassistant/components/cielo_home/config_flow.py
new file mode 100644
index 000000000000..856bc2d7e7bb
--- /dev/null
+++ b/homeassistant/components/cielo_home/config_flow.py
@@ -0,0 +1,101 @@
+"""Config Flow for Cielo integration."""
+
+from __future__ import annotations
+
+from typing import Any, Final
+
+from aiohttp import ClientError
+from cieloconnectapi import CieloClient
+from cieloconnectapi.exceptions import AuthenticationError, CieloError
+import voluptuous as vol
+
+from homeassistant import config_entries
+from homeassistant.config_entries import ConfigFlowResult
+from homeassistant.const import CONF_API_KEY, CONF_TOKEN
+from homeassistant.helpers.aiohttp_client import async_get_clientsession
+from homeassistant.helpers.selector import (
+    TextSelector,
+    TextSelectorConfig,
+    TextSelectorType,
+)
+
+from .const import DEFAULT_NAME, DOMAIN, LOGGER, TIMEOUT
+
+DATA_SCHEMA: Final = vol.Schema(
+    {
+        vol.Required(CONF_API_KEY): TextSelector(
+            TextSelectorConfig(type=TextSelectorType.PASSWORD)
+        ),
+    }
+)
+
+
+class CieloConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
+    """Handle a config flow for Cielo integration."""
+
+    VERSION = 1
+    MINOR_VERSION = 1
+
+    async def _async_validate_api_key(
+        self, api_key: str
+    ) -> tuple[str | None, dict[str, str]]:
+        """Validate the API key, initialize the client, and return errors or token."""
+        client = CieloClient(
+            api_key=api_key,
+            timeout=TIMEOUT,
+            session=async_get_clientsession(self.hass),
+        )
+
+        try:
+            token = await client.get_or_refresh_token()
+
+            devices = await client.get_devices_data()
+            if not devices.parsed:
+                return None, {"base": "no_devices"}
+
+        except AuthenticationError:
+            return None, {"base": "invalid_auth"}
+        except ConnectionError, TimeoutError, ClientError, CieloError:
+            return None, {"base": "cannot_connect"}
+        except Exception:  # noqa: BLE001
+            LOGGER.exception("Unexpected exception during config flow validation")
+            return None, {"base": "unknown"}
+
+        return client.user_id, {CONF_TOKEN: token}
+
+    async def async_step_user(
+        self, user_input: dict[str, Any] | None = None
+    ) -> ConfigFlowResult:
+        """Handle the initial step."""
+        errors: dict[str, str] = {}
+
+        if user_input:
+            api_key = user_input[CONF_API_KEY].strip()
+
+            user_id, validation_result = await self._async_validate_api_key(api_key)
+
+            if "base" in validation_result:
+                errors = validation_result
+            else:
+                token: str = validation_result[CONF_TOKEN]
+
+                user_input[CONF_API_KEY] = api_key
+                user_input[CONF_TOKEN] = token
+
+                await self.async_set_unique_id(user_id)
+                self._abort_if_unique_id_configured()
+
+                return self.async_create_entry(
+                    title=DEFAULT_NAME,
+                    data=user_input,
+                )
+
+        # Show the user form
+        return self.async_show_form(
+            step_id="user",
+            data_schema=DATA_SCHEMA,
+            errors=errors,
+            description_placeholders={
+                "url": "https://www.home-assistant.io/integrations/cielo_home"
+            },
+        )
diff --git a/homeassistant/components/cielo_home/const.py b/homeassistant/components/cielo_home/const.py
new file mode 100644
index 000000000000..dbc3d68d342a
--- /dev/null
+++ b/homeassistant/components/cielo_home/const.py
@@ -0,0 +1,24 @@
+"""Constants for the Cielo Home integration."""
+
+import logging
+from typing import Final
+
+from aiohttp import ClientError
+from cieloconnectapi.exceptions import CieloError
+
+from homeassistant.const import Platform
+
+DOMAIN: Final = "cielo_home"
+PLATFORMS: Final[list[Platform]] = [
+    Platform.CLIMATE,
+]
+DEFAULT_NAME: Final = "Cielo Home"
+DEFAULT_SCAN_INTERVAL: Final[int] = 2 * 60
+TIMEOUT: Final[int] = 20
+LOGGER: Final = logging.getLogger(__package__)
+
+CIELO_ERRORS: Final[tuple] = (
+    ClientError,
+    TimeoutError,
+    CieloError,
+)
diff --git a/homeassistant/components/cielo_home/coordinator.py b/homeassistant/components/cielo_home/coordinator.py
new file mode 100644
index 000000000000..3f53291b840d
--- /dev/null
+++ b/homeassistant/components/cielo_home/coordinator.py
@@ -0,0 +1,109 @@
+"""Coordinator for Cielo integration."""
+
+from __future__ import annotations
+
+from copy import copy
+from dataclasses import dataclass
+from datetime import timedelta
+from typing import Any, Final
+
+from aiohttp import ClientError
+from cieloconnectapi import CieloClient
+from cieloconnectapi.exceptions import AuthenticationError, CieloError
+from cieloconnectapi.model import CieloDevice
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import CONF_API_KEY, CONF_TOKEN
+from homeassistant.core import HomeAssistant
+from homeassistant.exceptions import ConfigEntryAuthFailed
+from homeassistant.helpers.aiohttp_client import async_get_clientsession
+from homeassistant.helpers.debounce import Debouncer
+from homeassistant.helpers.update_coordinator import DataUpdateCoordinator, UpdateFailed
+
+from .const import DEFAULT_SCAN_INTERVAL, DOMAIN, LOGGER, TIMEOUT
+
+REQUEST_REFRESH_DELAY: Final[int] = 2 * 60
+
+
+@dataclass(slots=True)
+class CieloData:
+    """Data structure for the coordinator."""
+
+    raw: dict[str, Any]
+    parsed: dict[str, CieloDevice]
+
+
+class CieloDataUpdateCoordinator(DataUpdateCoordinator[CieloData]):
+    """Cielo Data Update Coordinator."""
+
+    config_entry: CieloHomeConfigEntry
+
+    def __init__(self, hass: HomeAssistant, entry: CieloHomeConfigEntry) -> None:
+        """Initialize the coordinator."""
+        self.client = CieloClient(
+            api_key=entry.data[CONF_API_KEY],
+            timeout=TIMEOUT,
+            token=entry.data[CONF_TOKEN],
+            session=async_get_clientsession(hass),
+        )
+
+        super().__init__(
+            hass,
+            LOGGER,
+            name=DOMAIN,
+            config_entry=entry,
+            update_interval=timedelta(seconds=DEFAULT_SCAN_INTERVAL),
+            # The debouncer prevents multiple rapid refresh requests from triggering repeated full data fetches from the backend.
+            request_refresh_debouncer=Debouncer(
+                hass, LOGGER, cooldown=REQUEST_REFRESH_DELAY, immediate=False
+            ),
+        )
+
+    async def _async_update_data(self) -> CieloData:
+        """Fetch data from the API."""
+        try:
+            data = await self.client.get_devices_data()
+        except AuthenticationError as err:
+            raise ConfigEntryAuthFailed from err
+        except (TimeoutError, ConnectionError, CieloError, ClientError) as err:
+            raise UpdateFailed(err) from err
+
+        return CieloData(raw=data.raw, parsed=data.parsed)
+
+    async def async_apply_action_result(
+        self, device_id: str, data: dict[str, Any]
+    ) -> None:
+        """Apply an optimistic update from an API action response.
+
+        This updates the affected device locally in the coordinator state so the
+        UI reflects the change immediately without requiring a full backend refresh.
+
+        Performing a coordinator refresh after every action would fetch all devices
+        for the account, even when only a single device was updated. This is not
+        optimal from an API usage/cost perspective.
+
+        Instead, the coordinator applies the action result locally for the affected
+        device and schedules a later refresh to reconcile with the backend state.
+        """
+        if not self.data or not self.data.parsed or device_id not in self.data.parsed:
+            await self.async_request_refresh()
+            return
+
+        new_parsed = dict(self.data.parsed)
+        dev = copy(new_parsed[device_id])
+
+        try:
+            dev.apply_update(data)
+        except KeyError, ValueError, TypeError:
+            await self.async_request_refresh()
+            return
+
+        new_parsed[device_id] = dev
+        self.async_set_updated_data(CieloData(raw=self.data.raw, parsed=new_parsed))
+
+        # Request a debounced refresh to reconcile with the backend state.
+        await self.async_request_refresh()
+
+
+# Define the ConfigEntry type here to avoid circular imports
+type CieloHomeConfigEntry = ConfigEntry[CieloDataUpdateCoordinator]
diff --git a/homeassistant/components/cielo_home/entity.py b/homeassistant/components/cielo_home/entity.py
new file mode 100644
index 000000000000..ed82d59d4009
--- /dev/null
+++ b/homeassistant/components/cielo_home/entity.py
@@ -0,0 +1,78 @@
+"""Base entity for Cielo integration."""
+
+from __future__ import annotations
+
+from cieloconnectapi.device import CieloDeviceAPI
+from cieloconnectapi.model import CieloDevice
+
+from homeassistant.helpers.device_registry import (
+    CONNECTION_NETWORK_MAC,
+    DeviceInfo,
+    format_mac,
+)
+from homeassistant.helpers.update_coordinator import CoordinatorEntity
+
+from .const import DOMAIN
+from .coordinator import CieloDataUpdateCoordinator
+
+
+class CieloBaseEntity(CoordinatorEntity[CieloDataUpdateCoordinator]):
+    """Representation of a Cielo base entity."""
+
+    _attr_has_entity_name = True
+
+    def __init__(
+        self,
+        coordinator: CieloDataUpdateCoordinator,
+        device_id: str,
+    ) -> None:
+        """Initialize the Cielo base entity."""
+        super().__init__(coordinator)
+        self._device_id = device_id
+        self.client = CieloDeviceAPI(
+            coordinator.client, coordinator.data.parsed[device_id]
+        )
+
+    def _handle_coordinator_update(self) -> None:
+        """Handle updated data from the coordinator."""
+        if (dev := self.device_data) is not None:
+            self.client.device_data = dev
+        super()._handle_coordinator_update()
+
+    @property
+    def device_data(self) -> CieloDevice | None:
+        """Return the device data from the coordinator."""
+        return self.coordinator.data.parsed.get(self._device_id)
+
+    @property
+    def available(self) -> bool:
+        """Return if the device is available and online."""
+        if not (super().available and self._device_id in self.coordinator.data.parsed):
+            return False
+
+        dev = self.device_data
+        return bool(dev and dev.device_status)
+
+
+class CieloDeviceEntity(CieloBaseEntity):
+    """Representation of a Cielo Device."""
+
+    def __init__(
+        self,
+        coordinator: CieloDataUpdateCoordinator,
+        device_id: str,
+    ) -> None:
+        """Initialize the device entity."""
+        super().__init__(coordinator, device_id)
+        self.device_id = device_id
+
+        device = coordinator.data.parsed[device_id]
+
+        self._attr_device_info = DeviceInfo(
+            identifiers={(DOMAIN, device.id)},
+            name=device.name,
+            connections={(CONNECTION_NETWORK_MAC, format_mac(device.mac_address))},
+            manufacturer="Cielo",
+            configuration_url="https://home.cielowigle.com/",
+            suggested_area=device.name,
+        )
diff --git a/homeassistant/components/cielo_home/manifest.json b/homeassistant/components/cielo_home/manifest.json
new file mode 100644
index 000000000000..9e233aa89d38
--- /dev/null
+++ b/homeassistant/components/cielo_home/manifest.json
@@ -0,0 +1,12 @@
+{
+  "domain": "cielo_home",
+  "name": "Cielo Home",
+  "codeowners": ["@ihsan-cielo", "@mudasar-cielo"],
+  "config_flow": true,
+  "documentation": "https://www.home-assistant.io/integrations/cielo_home",
+  "integration_type": "hub",
+  "iot_class": "cloud_polling",
+  "loggers": ["cieloconnectapi"],
+  "quality_scale": "bronze",
+  "requirements": ["cielo-connect-api==1.0.6"]
+}
diff --git a/homeassistant/components/cielo_home/quality_scale.yaml b/homeassistant/components/cielo_home/quality_scale.yaml
new file mode 100644
index 000000000000..a7af9f8bb940
--- /dev/null
+++ b/homeassistant/components/cielo_home/quality_scale.yaml
@@ -0,0 +1,60 @@
+rules:
+  # Bronze
+  action-setup: done
+  appropriate-polling: done
+  brands: done
+  common-modules: done
+  config-flow-test-coverage: done
+  config-flow: done
+  dependency-transparency: done
+  docs-actions: done
+  docs-high-level-description: done
+  docs-installation-instructions: done
+  docs-removal-instructions: done
+  entity-event-setup: done
+  entity-unique-id: done
+  has-entity-name: done
+  runtime-data: done
+  test-before-configure: done
+  test-before-setup: done
+  unique-config-entry: done
+
+  # Silver
+  action-exceptions: done
+  config-entry-unloading: done
+  docs-configuration-parameters: todo
+  docs-installation-parameters: todo
+  entity-unavailable: done
+  integration-owner: done
+  log-when-unavailable: todo
+  parallel-updates: done
+  reauthentication-flow: todo
+  test-coverage: todo
+
+  # Gold
+  devices: done
+  diagnostics: todo
+  discovery-update-info: todo
+  discovery: todo
+  docs-data-update: todo
+  docs-examples: todo
+  docs-known-limitations: todo
+  docs-supported-devices: todo
+  docs-supported-functions: todo
+  docs-troubleshooting: todo
+  docs-use-cases: todo
+  dynamic-devices: todo
+  entity-category: todo
+  entity-device-class: todo
+  entity-disabled-by-default: todo
+  entity-translations: done
+  exception-translations: todo
+  icon-translations: todo
+  reconfiguration-flow: todo
+  repair-issues: todo
+  stale-devices: todo
+
+  # Platinum
+  async-dependency: done
+  inject-websession: done
+  strict-typing: todo
diff --git a/homeassistant/components/cielo_home/strings.json b/homeassistant/components/cielo_home/strings.json
new file mode 100644
index 000000000000..a7dba1479250
--- /dev/null
+++ b/homeassistant/components/cielo_home/strings.json
@@ -0,0 +1,69 @@
+{
+  "config": {
+    "abort": {
+      "already_configured": "[%key:common::config_flow::abort::already_configured_account%]",
+      "single_instance_allowed": "[%key:common::config_flow::abort::single_instance_allowed%]"
+    },
+    "error": {
+      "cannot_connect": "[%key:common::config_flow::error::cannot_connect%]",
+      "invalid_auth": "Invalid or expired API key; generate a new one",
+      "no_devices": "No devices found; make sure devices are set up in the Cielo Home app",
+      "no_user_id": "No valid user information found for the API key",
+      "unknown": "[%key:common::config_flow::error::unknown%]"
+    },
+    "step": {
+      "user": {
+        "data": {
+          "api_key": "[%key:common::config_flow::data::api_key%]"
+        },
+        "data_description": {
+          "api_key": "The API key from your Cielo Home account"
+        },
+        "description": "Sign in with your Cielo Home API key. Follow the [documentation]({url}) to learn how to get your API key.",
+        "title": "Connect to Cielo Home"
+      }
+    }
+  },
+  "entity": {
+    "climate": {
+      "climate_device": {
+        "state_attributes": {
+          "fan_mode": {
+            "state": {
+              "auto": "[%key:common::state::auto%]",
+              "high": "[%key:common::state::high%]",
+              "low": "[%key:common::state::low%]",
+              "medium": "[%key:common::state::medium%]",
+              "quiet": "Quiet",
+              "super_high": "Super high",
+              "ultra_high": "Ultra high"
+            }
+          },
+          "swing_mode": {
+            "state": {
+              "adjust": "Adjust",
+              "auto": "[%key:common::state::auto%]",
+              "auto_stop": "Auto Stop",
+              "pos1": "Position 1",
+              "pos10": "Position 10",
+              "pos11": "Position 11",
+              "pos12": "Position 12",
+              "pos13": "Position 13",
+              "pos14": "Position 14",
+              "pos15": "Position 15",
+              "pos2": "Position 2",
+              "pos3": "Position 3",
+              "pos4": "Position 4",
+              "pos5": "Position 5",
+              "pos6": "Position 6",
+              "pos7": "Position 7",
+              "pos8": "Position 8",
+              "pos9": "Position 9",
+              "swing": "Swing"
+            }
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/homeassistant/generated/config_flows.py b/homeassistant/generated/config_flows.py
index e32493a1de0e..d876cc517d00 100644
--- a/homeassistant/generated/config_flows.py
+++ b/homeassistant/generated/config_flows.py
@@ -124,6 +124,7 @@ FLOWS = {
         "cert_expiry",
         "chacon_dio",
         "chess_com",
+        "cielo_home",
         "cloudflare",
         "cloudflare_r2",
         "co2signal",
diff --git a/homeassistant/generated/integrations.json b/homeassistant/generated/integrations.json
index 9d8e36587bac..3400242cf292 100644
--- a/homeassistant/generated/integrations.json
+++ b/homeassistant/generated/integrations.json
@@ -1014,6 +1014,12 @@
       "config_flow": true,
       "iot_class": "cloud_polling"
     },
+    "cielo_home": {
+      "name": "Cielo Home",
+      "integration_type": "hub",
+      "config_flow": true,
+      "iot_class": "cloud_polling"
+    },
     "cisco": {
       "name": "Cisco",
       "integrations": {
diff --git a/requirements_all.txt b/requirements_all.txt
index df9014437937..0761f6edf209 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -735,6 +735,9 @@ caldav==2.1.0
 # homeassistant.components.chess_com
 chess-com-api==1.1.0
 
+# homeassistant.components.cielo_home
+cielo-connect-api==1.0.6
+
 # homeassistant.components.cisco_mobility_express
 ciscomobilityexpress==0.3.9
 
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 72043228c921..090c5b8a0f8b 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -659,6 +659,9 @@ caldav==2.1.0
 # homeassistant.components.chess_com
 chess-com-api==1.1.0
 
+# homeassistant.components.cielo_home
+cielo-connect-api==1.0.6
+
 # homeassistant.components.coinbase
 coinbase-advanced-py==1.2.2
 
diff --git a/tests/components/cielo_home/__init__.py b/tests/components/cielo_home/__init__.py
new file mode 100644
index 000000000000..83871e19b039
--- /dev/null
+++ b/tests/components/cielo_home/__init__.py
@@ -0,0 +1,3 @@
+"""Tests for the Cielo Home integration."""
+
+from __future__ import annotations
diff --git a/tests/components/cielo_home/conftest.py b/tests/components/cielo_home/conftest.py
new file mode 100644
index 000000000000..9fb9df783180
--- /dev/null
+++ b/tests/components/cielo_home/conftest.py
@@ -0,0 +1,91 @@
+"""Common fixtures for the Cielo Home tests."""
+
+from collections.abc import Generator
+from unittest.mock import AsyncMock, MagicMock, patch
+
+import pytest
+
+from homeassistant.components.cielo_home.const import DOMAIN
+from homeassistant.components.climate import HVACMode
+from homeassistant.const import CONF_API_KEY, CONF_TOKEN
+
+from tests.common import MockConfigEntry
+
+
+@pytest.fixture
+def mock_setup_entry() -> Generator[AsyncMock]:
+    """Override async_setup_entry for the Cielo Home integration."""
+    with patch(
+        "homeassistant.components.cielo_home.async_setup_entry", return_value=True
+    ) as mock_setup_entry:
+        yield mock_setup_entry
+
+
+@pytest.fixture
+def mock_cielo_client() -> Generator[MagicMock]:
+    """Mock the CieloClient to prevent actual API calls during init."""
+    with (
+        patch(
+            "homeassistant.components.cielo_home.coordinator.CieloClient", autospec=True
+        ) as mock_client_cls,
+        patch(
+            "homeassistant.components.cielo_home.config_flow.CieloClient",
+            autospec=True,
+        ),
+    ):
+        client = mock_client_cls.return_value
+
+        # Fake device
+        dev = MagicMock()
+        dev.id = "device_1"
+        dev.name = "Living Room"
+        dev.mac_address = "AA:BB:CC:DD:EE:FF"
+        dev.device_status = True
+        dev.preset_modes = ["sleep"]
+        dev.humidity = 40
+
+        mock_data = MagicMock()
+        mock_data.raw = {}
+        mock_data.parsed = {"device_1": dev}
+
+        client.get_devices_data = AsyncMock(return_value=mock_data)
+
+        yield client
+
+
+@pytest.fixture
+def mock_config_entry() -> MockConfigEntry:
+    """Create a mock config entry for the Cielo Home integration."""
+    return MockConfigEntry(
+        domain=DOMAIN,
+        unique_id="test-user-1",
+        data={CONF_API_KEY: "test-api-key-", CONF_TOKEN: "valid-test-token"},
+    )
+
+
+@pytest.fixture
+def mock_cielo_device_api() -> Generator[MagicMock]:
+    """Mock the CieloDeviceAPI to prevent actual device API calls."""
+    device_api = MagicMock()
+    device_api.temperature_unit.return_value = "°C"
+    device_api.min_temp.return_value = 10
+    device_api.max_temp.return_value = 35
+    device_api.target_temperature_step.return_value = 1
+    device_api.hvac_mode.return_value = HVACMode.COOL
+    device_api.hvac_modes.return_value = [HVACMode.OFF, HVACMode.COOL]
+    device_api.mode_supports_temperature.return_value = True
+    device_api.mode_caps.return_value = {"fan_levels": True, "swing": True}
+    device_api.current_temperature.return_value = 22
+    device_api.target_temperature.return_value = 24
+    device_api.fan_modes.return_value = ["auto", "low", "high"]
+    device_api.preset_modes.return_value = ["home", "away"]
+    device_api.swing_modes.return_value = ["auto", "pos1", "pos2"]
+    device_api.async_set_temperature = AsyncMock(
+        return_value={"data": {"target_temperature": 25}}
+    )
+
+    with patch(
+        "homeassistant.components.cielo_home.entity.CieloDeviceAPI",
+        return_value=device_api,
+    ):
+        yield device_api
diff --git a/tests/components/cielo_home/test_climate.py b/tests/components/cielo_home/test_climate.py
new file mode 100644
index 000000000000..6b9634f86759
--- /dev/null
+++ b/tests/components/cielo_home/test_climate.py
@@ -0,0 +1,35 @@
+"""Common tests for the Cielo Home climate."""
+
+from unittest.mock import MagicMock
+
+from homeassistant.const import UnitOfTemperature
+from homeassistant.core import HomeAssistant
+
+from tests.common import MockConfigEntry
+
+
+async def test_climate_set_temperature_calls_library(
+    hass: HomeAssistant,
+    mock_cielo_client: MagicMock,
+    mock_config_entry: MockConfigEntry,
+    mock_cielo_device_api: MagicMock,
+) -> None:
+    """Test setting temperature calls into the library client/device API."""
+    mock_config_entry.add_to_hass(hass)
+
+    assert await hass.config_entries.async_setup(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    entity_id = "climate.living_room"
+
+    await hass.services.async_call(
+        "climate",
+        "set_temperature",
+        {"entity_id": entity_id, "temperature": 25},
+        blocking=True,
+    )
+
+    mock_cielo_device_api.async_set_temperature.assert_awaited_once_with(
+        UnitOfTemperature.CELSIUS,
+        temperature=25.0,
+    )
diff --git a/tests/components/cielo_home/test_config_flow.py b/tests/components/cielo_home/test_config_flow.py
new file mode 100644
index 000000000000..d678b4ff9d10
--- /dev/null
+++ b/tests/components/cielo_home/test_config_flow.py
@@ -0,0 +1,161 @@
+"""Tests for Cielo config flow."""
+
+from __future__ import annotations
+
+from unittest.mock import AsyncMock, MagicMock, patch
+
+from cieloconnectapi.exceptions import AuthenticationError
+import pytest
+
+from homeassistant.components.cielo_home.const import DOMAIN
+from homeassistant.config_entries import SOURCE_USER
+from homeassistant.const import CONF_API_KEY, CONF_TOKEN
+from homeassistant.core import HomeAssistant
+from homeassistant.data_entry_flow import FlowResultType
+
+from tests.common import MockConfigEntry
+
+MOCK_TOKEN = "valid-test-token"
+MOCK_CIELO_CLIENT_CTOR = "homeassistant.components.cielo_home.config_flow.CieloClient"
+
+
+def _devices_payload(parsed: dict | None) -> MagicMock:
+    """Return a mock object shaped like cieloconnectapi get_devices_data() result."""
+    payload = MagicMock()
+    payload.raw = {}
+    payload.parsed = parsed
+    return payload
+
+
+async def test_full_config_flow_success(hass: HomeAssistant) -> None:
+    """Test successful config flow with valid API key."""
+    mock_client = MagicMock()
+    mock_client.user_id = "test-user"
+    mock_client.get_or_refresh_token = AsyncMock(return_value=MOCK_TOKEN)
+    mock_client.get_devices_data = AsyncMock(
+        return_value=_devices_payload({"dev1": MagicMock()})
+    )
+
+    with patch(MOCK_CIELO_CLIENT_CTOR, return_value=mock_client):
+        result = await hass.config_entries.flow.async_init(
+            DOMAIN, context={"source": SOURCE_USER}
+        )
+        assert result["type"] is FlowResultType.FORM
+
+        result = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            user_input={CONF_API_KEY: "  test-api-key  "},
+        )
+    assert result["type"] is FlowResultType.CREATE_ENTRY
+    assert result["title"] == "Cielo Home"
+    assert result["data"] == {
+        CONF_API_KEY: "test-api-key",
+        CONF_TOKEN: MOCK_TOKEN,
+    }
+    assert result["result"].unique_id == "test-user"
+
+
+async def test_full_config_flow_abort_already_configured(
+    hass: HomeAssistant, mock_config_entry: MockConfigEntry
+) -> None:
+    """Test the flow aborts when the account is already configured."""
+    mock_config_entry.add_to_hass(hass)
+    mock_client = MagicMock()
+    mock_client.user_id = mock_config_entry.unique_id
+    mock_client.get_or_refresh_token = AsyncMock(return_value=MOCK_TOKEN)
+    mock_client.get_devices_data = AsyncMock(
+        return_value=_devices_payload({"dev1": MagicMock()})
+    )
+
+    with patch(MOCK_CIELO_CLIENT_CTOR, return_value=mock_client):
+        result = await hass.config_entries.flow.async_init(
+            DOMAIN, context={"source": SOURCE_USER}
+        )
+        assert result["type"] is FlowResultType.FORM
+
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            user_input={CONF_API_KEY: "test-api-key"},
+        )
+
+    assert result2["type"] is FlowResultType.ABORT
+    assert result2["reason"] == "already_configured"
+
+
+@pytest.mark.parametrize(
+    ("api_error", "flow_error_key"),
+    [
+        (ConnectionError, "cannot_connect"),
+        (Exception, "unknown"),
+    ],
+)
+async def test_form_error_mapping(
+    hass: HomeAssistant, api_error: type[Exception], flow_error_key: str
+) -> None:
+    """Test we handle various API errors correctly.
+
+    These errors may occur from either token retrieval or device fetch
+    (your flow does both in validation).
+    """
+    mock_client = MagicMock()
+    mock_client.user_id = "test-user"
+    mock_client.get_or_refresh_token = AsyncMock(return_value=MOCK_TOKEN)
+    mock_client.get_devices_data = AsyncMock(side_effect=api_error)
+
+    with patch(MOCK_CIELO_CLIENT_CTOR, return_value=mock_client):
+        result = await hass.config_entries.flow.async_init(
+            DOMAIN, context={"source": SOURCE_USER}
+        )
+        assert result["type"] is FlowResultType.FORM
+
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            user_input={CONF_API_KEY: "test-api-key"},
+        )
+
+        assert result2["type"] is FlowResultType.FORM
+        assert result2["errors"]["base"] == flow_error_key
+
+        # simulate recovery (next call succeeds)
+        mock_client.get_devices_data = AsyncMock(return_value=MagicMock(parsed=True))
+
+        result3 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            user_input={CONF_API_KEY: "test-api-key"},
+        )
+
+        assert result3["type"] is FlowResultType.CREATE_ENTRY
+
+
+async def test_form_error_mapping_invalid_auth(hass: HomeAssistant) -> None:
+    """Test AuthenticationError maps to invalid_auth."""
+
+    mock_client = MagicMock()
+    mock_client.user_id = "test-user"
+    mock_client.get_or_refresh_token = AsyncMock(side_effect=AuthenticationError)
+    mock_client.get_devices_data = AsyncMock(
+        return_value=_devices_payload({"dev1": MagicMock()})
+    )
+
+    with patch(MOCK_CIELO_CLIENT_CTOR, return_value=mock_client):
+        result = await hass.config_entries.flow.async_init(
+            DOMAIN, context={"source": SOURCE_USER}
+        )
+        assert result["type"] is FlowResultType.FORM
+
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            user_input={CONF_API_KEY: "test-api-key"},
+        )
+
+        assert result2["type"] is FlowResultType.FORM
+        assert result2["errors"]["base"] == "invalid_auth"
+
+        mock_client.get_or_refresh_token = AsyncMock(return_value=MOCK_TOKEN)
+
+        result3 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            user_input={CONF_API_KEY: "test-api-key"},
+        )
+
+    assert result3["type"] is FlowResultType.CREATE_ENTRY
diff --git a/tests/components/cielo_home/test_init.py b/tests/components/cielo_home/test_init.py
new file mode 100644
index 000000000000..24fed47063c9
--- /dev/null
+++ b/tests/components/cielo_home/test_init.py
@@ -0,0 +1,38 @@
+"""Common tests for the Cielo Home."""
+
+from unittest.mock import MagicMock
+
+from homeassistant.components.cielo_home.const import DOMAIN
+from homeassistant.config_entries import ConfigEntryState
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers import entity_registry as er
+
+from tests.common import MockConfigEntry
+
+
+async def test_async_setup_and_unload_entry(
+    hass: HomeAssistant,
+    mock_cielo_client: MagicMock,
+    mock_config_entry: MockConfigEntry,
+) -> None:
+    """Test setting up and unloading the integration."""
+    mock_config_entry.add_to_hass(hass)
+
+    assert await hass.config_entries.async_setup(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+
+    assert mock_config_entry.state is ConfigEntryState.LOADED
+    assert mock_config_entry.runtime_data is not None
+
+    entity_reg = er.async_get(hass)
+    entities = [
+        e
+        for e in entity_reg.entities.values()
+        if e.platform == DOMAIN and e.domain == "climate"
+    ]
+    assert len(entities) == 1
+
+    # Unload
+    assert await hass.config_entries.async_unload(mock_config_entry.entry_id)
+    await hass.async_block_till_done()
+    assert mock_config_entry.state is ConfigEntryState.NOT_LOADED