diff --git a/.coveragerc b/.coveragerc
index 84577e99197..49c2cb98424 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -20,6 +20,8 @@ omit =
     homeassistant/components/acmeda/helpers.py
     homeassistant/components/acmeda/hub.py
     homeassistant/components/acmeda/sensor.py
+    homeassistant/components/adax/__init__.py
+    homeassistant/components/adax/climate.py
     homeassistant/components/adguard/__init__.py
     homeassistant/components/adguard/const.py
     homeassistant/components/adguard/sensor.py
diff --git a/CODEOWNERS b/CODEOWNERS
index acd2b6d44c3..e5a9bcd5823 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -22,6 +22,7 @@ homeassistant/scripts/check_config.py @kellerza
 homeassistant/components/abode/* @shred86
 homeassistant/components/accuweather/* @bieniu
 homeassistant/components/acmeda/* @atmurray
+homeassistant/components/adax/* @danielhiversen
 homeassistant/components/adguard/* @frenck
 homeassistant/components/advantage_air/* @Bre77
 homeassistant/components/aemet/* @noltari
diff --git a/homeassistant/components/adax/__init__.py b/homeassistant/components/adax/__init__.py
new file mode 100644
index 00000000000..0a14648af26
--- /dev/null
+++ b/homeassistant/components/adax/__init__.py
@@ -0,0 +1,18 @@
+"""The Adax integration."""
+from __future__ import annotations
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+
+PLATFORMS = ["climate"]
+
+
+async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+    """Set up Adax from a config entry."""
+    hass.config_entries.async_setup_platforms(entry, PLATFORMS)
+    return True
+
+
+async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
+    """Unload a config entry."""
+    return await hass.config_entries.async_unload_platforms(entry, PLATFORMS)
diff --git a/homeassistant/components/adax/climate.py b/homeassistant/components/adax/climate.py
new file mode 100644
index 00000000000..74e973ba6d5
--- /dev/null
+++ b/homeassistant/components/adax/climate.py
@@ -0,0 +1,152 @@
+"""Support for Adax wifi-enabled home heaters."""
+from __future__ import annotations
+
+import logging
+from typing import Any
+
+from adax import Adax
+
+from homeassistant.components.climate import ClimateEntity
+from homeassistant.components.climate.const import (
+    HVAC_MODE_HEAT,
+    HVAC_MODE_OFF,
+    SUPPORT_TARGET_TEMPERATURE,
+)
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.const import (
+    ATTR_TEMPERATURE,
+    CONF_PASSWORD,
+    PRECISION_WHOLE,
+    TEMP_CELSIUS,
+)
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.aiohttp_client import async_get_clientsession
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from .const import ACCOUNT_ID
+
+_LOGGER = logging.getLogger(__name__)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up the Adax thermostat with config flow."""
+    adax_data_handler = Adax(
+        entry.data[ACCOUNT_ID],
+        entry.data[CONF_PASSWORD],
+        websession=async_get_clientsession(hass),
+    )
+
+    async_add_entities(
+        AdaxDevice(room, adax_data_handler)
+        for room in await adax_data_handler.get_rooms()
+    )
+
+
+class AdaxDevice(ClimateEntity):
+    """Representation of a heater."""
+
+    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']}"
+
+    @property
+    def name(self) -> str:
+        """Return the name of the device, if any."""
+        return self._heater_data["name"]
+
+    @property
+    def hvac_mode(self) -> str:
+        """Return hvac operation ie. heat, cool mode."""
+        if self._heater_data["heatingEnabled"]:
+            return HVAC_MODE_HEAT
+        return HVAC_MODE_OFF
+
+    @property
+    def icon(self) -> str:
+        """Return nice icon for heater."""
+        if self.hvac_mode == HVAC_MODE_HEAT:
+            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:
+            temperature = max(
+                self.min_temp, self._heater_data.get("targetTemperature", self.min_temp)
+            )
+            await self._adax_data_handler.set_room_target_temperature(
+                self._heater_data["id"], temperature, True
+            )
+        elif hvac_mode == HVAC_MODE_OFF:
+            await self._adax_data_handler.set_room_target_temperature(
+                self._heater_data["id"], self.min_temp, False
+            )
+        else:
+            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."""
+        return self._heater_data.get("temperature")
+
+    @property
+    def target_temperature(self) -> int | None:
+        """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)
+        if temperature is None:
+            return
+        await self._adax_data_handler.set_room_target_temperature(
+            self._heater_data["id"], temperature, True
+        )
+
+    async def async_update(self) -> None:
+        """Get the latest data."""
+        for room in await self._adax_data_handler.get_rooms():
+            if room["id"] == self._heater_data["id"]:
+                self._heater_data = room
+                return
diff --git a/homeassistant/components/adax/config_flow.py b/homeassistant/components/adax/config_flow.py
new file mode 100644
index 00000000000..166278ef48d
--- /dev/null
+++ b/homeassistant/components/adax/config_flow.py
@@ -0,0 +1,71 @@
+"""Config flow for Adax integration."""
+from __future__ import annotations
+
+import logging
+from typing import Any
+
+import adax
+import voluptuous as vol
+
+from homeassistant import config_entries
+from homeassistant.const import CONF_PASSWORD
+from homeassistant.core import HomeAssistant
+from homeassistant.data_entry_flow import FlowResult
+from homeassistant.exceptions import HomeAssistantError
+from homeassistant.helpers.aiohttp_client import async_get_clientsession
+
+from .const import ACCOUNT_ID, DOMAIN
+
+_LOGGER = logging.getLogger(__name__)
+
+STEP_USER_DATA_SCHEMA = vol.Schema(
+    {vol.Required(ACCOUNT_ID): int, vol.Required(CONF_PASSWORD): str}
+)
+
+
+async def validate_input(hass: HomeAssistant, data: dict[str, Any]) -> None:
+    """Validate the user input allows us to connect."""
+    account_id = data[ACCOUNT_ID]
+    password = data[CONF_PASSWORD].replace(" ", "")
+
+    token = await adax.get_adax_token(
+        async_get_clientsession(hass), account_id, password
+    )
+    if token is None:
+        _LOGGER.info("Adax: Failed to login to retrieve token")
+        raise CannotConnect
+
+
+class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
+    """Handle a config flow for Adax."""
+
+    VERSION = 1
+
+    async def async_step_user(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
+        """Handle the initial step."""
+        if user_input is None:
+            return self.async_show_form(
+                step_id="user", data_schema=STEP_USER_DATA_SCHEMA
+            )
+
+        errors = {}
+
+        try:
+            self._async_abort_entries_match({ACCOUNT_ID: user_input[ACCOUNT_ID]})
+            await validate_input(self.hass, user_input)
+        except CannotConnect:
+            errors["base"] = "cannot_connect"
+        else:
+            return self.async_create_entry(
+                title=user_input[ACCOUNT_ID], data=user_input
+            )
+
+        return self.async_show_form(
+            step_id="user", data_schema=STEP_USER_DATA_SCHEMA, errors=errors
+        )
+
+
+class CannotConnect(HomeAssistantError):
+    """Error to indicate we cannot connect."""
diff --git a/homeassistant/components/adax/const.py b/homeassistant/components/adax/const.py
new file mode 100644
index 00000000000..ecb83f9b0f7
--- /dev/null
+++ b/homeassistant/components/adax/const.py
@@ -0,0 +1,5 @@
+"""Constants for the Adax integration."""
+from typing import Final
+
+ACCOUNT_ID: Final = "account_id"
+DOMAIN: Final = "adax"
diff --git a/homeassistant/components/adax/manifest.json b/homeassistant/components/adax/manifest.json
new file mode 100644
index 00000000000..36106290ed6
--- /dev/null
+++ b/homeassistant/components/adax/manifest.json
@@ -0,0 +1,13 @@
+{
+  "domain": "adax",
+  "name": "Adax",
+  "config_flow": true,
+  "documentation": "https://www.home-assistant.io/integrations/adax",
+  "requirements": [
+    "adax==0.0.1"
+  ],
+  "codeowners": [
+    "@danielhiversen"
+  ],
+  "iot_class": "cloud_polling"
+}
diff --git a/homeassistant/components/adax/strings.json b/homeassistant/components/adax/strings.json
new file mode 100644
index 00000000000..0f7aac83f5a
--- /dev/null
+++ b/homeassistant/components/adax/strings.json
@@ -0,0 +1,20 @@
+{
+  "config": {
+    "step": {
+      "user": {
+        "data": {
+          "host": "[%key:common::config_flow::data::host%]",
+          "account_id": "Account ID",
+          "password": "[%key:common::config_flow::data::password%]"
+        }
+      }
+    },
+    "error": {
+      "cannot_connect": "[%key:common::config_flow::error::cannot_connect%]",
+      "invalid_auth": "[%key:common::config_flow::error::invalid_auth%]"
+    },
+    "abort": {
+      "already_configured": "[%key:common::config_flow::abort::already_configured_device%]"
+    }
+  }
+}
diff --git a/homeassistant/components/adax/translations/en.json b/homeassistant/components/adax/translations/en.json
new file mode 100644
index 00000000000..a5a204c93f8
--- /dev/null
+++ b/homeassistant/components/adax/translations/en.json
@@ -0,0 +1,21 @@
+{
+    "config": {
+        "abort": {
+            "already_configured": "Device is already configured"
+        },
+        "error": {
+            "cannot_connect": "Failed to connect",
+            "invalid_auth": "Invalid authentication",
+            "unknown": "Unexpected error"
+        },
+        "step": {
+            "user": {
+                "data": {
+                    "host": "Host",
+                    "password": "Password",
+                    "account_id": "Account ID"
+                }
+            }
+        }
+    }
+}
diff --git a/homeassistant/generated/config_flows.py b/homeassistant/generated/config_flows.py
index 45a339ebed1..1321c01b27d 100644
--- a/homeassistant/generated/config_flows.py
+++ b/homeassistant/generated/config_flows.py
@@ -9,6 +9,7 @@ FLOWS = [
     "abode",
     "accuweather",
     "acmeda",
+    "adax",
     "adguard",
     "advantage_air",
     "aemet",
diff --git a/requirements_all.txt b/requirements_all.txt
index a0b2fa1d554..0559e927aec 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -104,6 +104,9 @@ adafruit-circuitpython-dht==3.6.0
 # homeassistant.components.mcp23017
 adafruit-circuitpython-mcp230xx==2.2.2
 
+# homeassistant.components.adax
+adax==0.0.1
+
 # homeassistant.components.androidtv
 adb-shell[async]==0.3.4
 
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index 36cfed2598e..80f25c59e31 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -47,6 +47,9 @@ abodepy==1.2.0
 # homeassistant.components.accuweather
 accuweather==0.2.0
 
+# homeassistant.components.adax
+adax==0.0.1
+
 # homeassistant.components.androidtv
 adb-shell[async]==0.3.4
 
diff --git a/tests/components/adax/__init__.py b/tests/components/adax/__init__.py
new file mode 100644
index 00000000000..54a72856a85
--- /dev/null
+++ b/tests/components/adax/__init__.py
@@ -0,0 +1 @@
+"""Tests for the Adax integration."""
diff --git a/tests/components/adax/test_config_flow.py b/tests/components/adax/test_config_flow.py
new file mode 100644
index 00000000000..f9638e52cbf
--- /dev/null
+++ b/tests/components/adax/test_config_flow.py
@@ -0,0 +1,78 @@
+"""Test the Adax config flow."""
+from unittest.mock import patch
+
+from homeassistant import config_entries
+from homeassistant.components.adax.const import ACCOUNT_ID, DOMAIN
+from homeassistant.const import CONF_PASSWORD
+from homeassistant.core import HomeAssistant
+
+from tests.common import MockConfigEntry
+
+TEST_DATA = {
+    ACCOUNT_ID: 12345,
+    CONF_PASSWORD: "pswd",
+}
+
+
+async def test_form(hass: HomeAssistant) -> None:
+    """Test we get the form."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+    assert result["type"] == "form"
+    assert result["errors"] is None
+
+    with patch("adax.get_adax_token", return_value="test_token",), patch(
+        "homeassistant.components.adax.async_setup_entry",
+        return_value=True,
+    ) as mock_setup_entry:
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            TEST_DATA,
+        )
+        await hass.async_block_till_done()
+
+    assert result2["type"] == "create_entry"
+    assert result2["title"] == TEST_DATA["account_id"]
+    assert result2["data"] == {
+        "account_id": TEST_DATA["account_id"],
+        "password": TEST_DATA["password"],
+    }
+    assert len(mock_setup_entry.mock_calls) == 1
+
+
+async def test_form_cannot_connect(hass: HomeAssistant) -> None:
+    """Test we handle cannot connect error."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+
+    with patch(
+        "adax.get_adax_token",
+        return_value=None,
+    ):
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            TEST_DATA,
+        )
+    assert result2["type"] == "form"
+    assert result2["errors"] == {"base": "cannot_connect"}
+
+
+async def test_flow_entry_already_exists(hass: HomeAssistant) -> None:
+    """Test user input for config_entry that already exists."""
+
+    first_entry = MockConfigEntry(
+        domain="adax",
+        data=TEST_DATA,
+        unique_id=TEST_DATA[ACCOUNT_ID],
+    )
+    first_entry.add_to_hass(hass)
+
+    with patch("adax.get_adax_token", return_value="token"):
+        result = await hass.config_entries.flow.async_init(
+            DOMAIN, context={"source": config_entries.SOURCE_USER}, data=TEST_DATA
+        )
+
+    assert result["type"] == "abort"
+    assert result["reason"] == "already_configured"