diff --git a/.coveragerc b/.coveragerc
index de778888097..28cadab252f 100644
--- a/.coveragerc
+++ b/.coveragerc
@@ -22,6 +22,7 @@ omit =
     homeassistant/components/alarmdotcom/alarm_control_panel.py
     homeassistant/components/alpha_vantage/sensor.py
     homeassistant/components/amazon_polly/tts.py
+    homeassistant/components/ambiclimate/climate.py
     homeassistant/components/ambient_station/*
     homeassistant/components/amcrest/*
     homeassistant/components/ampio/*
diff --git a/CODEOWNERS b/CODEOWNERS
index 6d27c8563fc..804426ce779 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -21,6 +21,7 @@ homeassistant/components/airvisual/* @bachya
 homeassistant/components/alarm_control_panel/* @colinodell
 homeassistant/components/alpha_vantage/* @fabaff
 homeassistant/components/amazon_polly/* @robbiet480
+homeassistant/components/ambiclimate/* @danielhiversen
 homeassistant/components/ambient_station/* @bachya
 homeassistant/components/api/* @home-assistant/core
 homeassistant/components/arduino/* @fabaff
diff --git a/homeassistant/components/ambiclimate/.translations/en.json b/homeassistant/components/ambiclimate/.translations/en.json
new file mode 100644
index 00000000000..78386077af2
--- /dev/null
+++ b/homeassistant/components/ambiclimate/.translations/en.json
@@ -0,0 +1,23 @@
+{
+  "config": {
+    "title": "Ambiclimate",
+    "step": {
+      "auth": {
+        "title": "Authenticate Ambiclimate",
+        "description": "Please follow this [link]({authorization_url}) and <b>Allow</b> access to your Ambiclimate account, then come back and press <b>Submit</b> below.\n(Make sure the specified callback url is {cb_url})"
+      }
+    },
+    "create_entry": {
+      "default": "Successfully authenticated with Ambiclimate"
+    },
+    "error": {
+      "no_token": "Not authenticated with Ambiclimate",
+      "follow_link": "Please follow the link and authenticate before pressing Submit"
+    },
+    "abort": {
+      "already_setup": "The Ambiclimate account is configured.",
+      "no_config": "You need to configure Ambiclimate before being able to authenticate with it. [Please read the instructions](https://www.home-assistant.io/components/ambiclimate/).",
+      "access_token": "Unknown error generating an access token."
+    }
+  }
+}
\ No newline at end of file
diff --git a/homeassistant/components/ambiclimate/__init__.py b/homeassistant/components/ambiclimate/__init__.py
new file mode 100644
index 00000000000..07494ce6cf7
--- /dev/null
+++ b/homeassistant/components/ambiclimate/__init__.py
@@ -0,0 +1,44 @@
+"""Support for Ambiclimate devices."""
+import logging
+
+import voluptuous as vol
+
+from homeassistant.helpers import config_validation as cv
+from . import config_flow
+from .const import CONF_CLIENT_ID, CONF_CLIENT_SECRET, DOMAIN
+
+
+_LOGGER = logging.getLogger(__name__)
+
+CONFIG_SCHEMA = vol.Schema(
+    {
+        DOMAIN:
+            vol.Schema({
+                vol.Required(CONF_CLIENT_ID): cv.string,
+                vol.Required(CONF_CLIENT_SECRET): cv.string,
+            })
+    },
+    extra=vol.ALLOW_EXTRA,
+)
+
+
+async def async_setup(hass, config):
+    """Set up Ambiclimate components."""
+    if DOMAIN not in config:
+        return True
+
+    conf = config[DOMAIN]
+
+    config_flow.register_flow_implementation(
+        hass, conf[CONF_CLIENT_ID],
+        conf[CONF_CLIENT_SECRET])
+
+    return True
+
+
+async def async_setup_entry(hass, entry):
+    """Set up Ambiclimate from a config entry."""
+    hass.async_create_task(hass.config_entries.async_forward_entry_setup(
+        entry, 'climate'))
+
+    return True
diff --git a/homeassistant/components/ambiclimate/climate.py b/homeassistant/components/ambiclimate/climate.py
new file mode 100644
index 00000000000..d326a943761
--- /dev/null
+++ b/homeassistant/components/ambiclimate/climate.py
@@ -0,0 +1,230 @@
+"""Support for Ambiclimate ac."""
+import asyncio
+import logging
+
+import ambiclimate
+import voluptuous as vol
+
+from homeassistant.components.climate import ClimateDevice
+from homeassistant.components.climate.const import (
+    SUPPORT_TARGET_TEMPERATURE,
+    SUPPORT_ON_OFF, STATE_HEAT)
+from homeassistant.const import ATTR_NAME
+from homeassistant.const import (ATTR_TEMPERATURE,
+                                 STATE_OFF, TEMP_CELSIUS)
+from homeassistant.helpers import config_validation as cv
+from homeassistant.helpers.aiohttp_client import async_get_clientsession
+from .const import (ATTR_VALUE, CONF_CLIENT_ID, CONF_CLIENT_SECRET,
+                    DOMAIN, SERVICE_COMFORT_FEEDBACK, SERVICE_COMFORT_MODE,
+                    SERVICE_TEMPERATURE_MODE, STORAGE_KEY, STORAGE_VERSION)
+
+_LOGGER = logging.getLogger(__name__)
+
+SUPPORT_FLAGS = (SUPPORT_TARGET_TEMPERATURE |
+                 SUPPORT_ON_OFF)
+
+SEND_COMFORT_FEEDBACK_SCHEMA = vol.Schema({
+    vol.Required(ATTR_NAME): cv.string,
+    vol.Required(ATTR_VALUE): cv.string,
+})
+
+SET_COMFORT_MODE_SCHEMA = vol.Schema({
+    vol.Required(ATTR_NAME): cv.string,
+})
+
+SET_TEMPERATURE_MODE_SCHEMA = vol.Schema({
+    vol.Required(ATTR_NAME): cv.string,
+    vol.Required(ATTR_VALUE): cv.string,
+})
+
+
+async def async_setup_platform(hass, config, async_add_entities,
+                               discovery_info=None):
+    """Set up the Ambicliamte device."""
+
+
+async def async_setup_entry(hass, entry, async_add_entities):
+    """Set up the Ambicliamte device from config entry."""
+    config = entry.data
+    websession = async_get_clientsession(hass)
+    store = hass.helpers.storage.Store(STORAGE_VERSION, STORAGE_KEY)
+    token_info = await store.async_load()
+
+    oauth = ambiclimate.AmbiclimateOAuth(config[CONF_CLIENT_ID],
+                                         config[CONF_CLIENT_SECRET],
+                                         config['callback_url'],
+                                         websession)
+
+    try:
+        _token_info = await oauth.refresh_access_token(token_info)
+    except ambiclimate.AmbiclimateOauthError:
+        _LOGGER.error("Failed to refresh access token")
+        return
+
+    if _token_info:
+        await store.async_save(token_info)
+        token_info = _token_info
+
+    data_connection = ambiclimate.AmbiclimateConnection(oauth,
+                                                        token_info=token_info,
+                                                        websession=websession)
+
+    if not await data_connection.find_devices():
+        _LOGGER.error("No devices found")
+        return
+
+    tasks = []
+    for heater in data_connection.get_devices():
+        tasks.append(heater.update_device_info())
+    await asyncio.wait(tasks)
+
+    devs = []
+    for heater in data_connection.get_devices():
+        devs.append(AmbiclimateEntity(heater, store))
+
+    async_add_entities(devs, True)
+
+    async def send_comfort_feedback(service):
+        """Send comfort feedback."""
+        device_name = service.data[ATTR_NAME]
+        device = data_connection.find_device_by_room_name(device_name)
+        if device:
+            await device.set_comfort_feedback(service.data[ATTR_VALUE])
+
+    hass.services.async_register(DOMAIN,
+                                 SERVICE_COMFORT_FEEDBACK,
+                                 send_comfort_feedback,
+                                 schema=SEND_COMFORT_FEEDBACK_SCHEMA)
+
+    async def set_comfort_mode(service):
+        """Set comfort mode."""
+        device_name = service.data[ATTR_NAME]
+        device = data_connection.find_device_by_room_name(device_name)
+        if device:
+            await device.set_comfort_mode()
+
+    hass.services.async_register(DOMAIN,
+                                 SERVICE_COMFORT_MODE,
+                                 set_comfort_mode,
+                                 schema=SET_COMFORT_MODE_SCHEMA)
+
+    async def set_temperature_mode(service):
+        """Set temperature mode."""
+        device_name = service.data[ATTR_NAME]
+        device = data_connection.find_device_by_room_name(device_name)
+        if device:
+            await device.set_temperature_mode(service.data[ATTR_VALUE])
+
+    hass.services.async_register(DOMAIN,
+                                 SERVICE_TEMPERATURE_MODE,
+                                 set_temperature_mode,
+                                 schema=SET_TEMPERATURE_MODE_SCHEMA)
+
+
+class AmbiclimateEntity(ClimateDevice):
+    """Representation of a Ambiclimate Thermostat device."""
+
+    def __init__(self, heater, store):
+        """Initialize the thermostat."""
+        self._heater = heater
+        self._store = store
+        self._data = {}
+
+    @property
+    def unique_id(self):
+        """Return a unique ID."""
+        return self._heater.device_id
+
+    @property
+    def name(self):
+        """Return the name of the entity."""
+        return self._heater.name
+
+    @property
+    def device_info(self):
+        """Return the device info."""
+        return {
+            'identifiers': {
+                (DOMAIN, self.unique_id)
+            },
+            'name': self.name,
+            'manufacturer': 'Ambiclimate',
+        }
+
+    @property
+    def temperature_unit(self):
+        """Return the unit of measurement which this thermostat uses."""
+        return TEMP_CELSIUS
+
+    @property
+    def target_temperature(self):
+        """Return the target temperature."""
+        return self._data.get('target_temperature')
+
+    @property
+    def target_temperature_step(self):
+        """Return the supported step of target temperature."""
+        return 1
+
+    @property
+    def current_temperature(self):
+        """Return the current temperature."""
+        return self._data.get('temperature')
+
+    @property
+    def current_humidity(self):
+        """Return the current humidity."""
+        return self._data.get('humidity')
+
+    @property
+    def is_on(self):
+        """Return true if heater is on."""
+        return self._data.get('power', '').lower() == 'on'
+
+    @property
+    def min_temp(self):
+        """Return the minimum temperature."""
+        return self._heater.get_min_temp()
+
+    @property
+    def max_temp(self):
+        """Return the maximum temperature."""
+        return self._heater.get_max_temp()
+
+    @property
+    def supported_features(self):
+        """Return the list of supported features."""
+        return SUPPORT_FLAGS
+
+    @property
+    def current_operation(self):
+        """Return current operation."""
+        return STATE_HEAT if self.is_on else STATE_OFF
+
+    async def async_set_temperature(self, **kwargs):
+        """Set new target temperature."""
+        temperature = kwargs.get(ATTR_TEMPERATURE)
+        if temperature is None:
+            return
+        await self._heater.set_target_temperature(temperature)
+
+    async def async_turn_on(self):
+        """Turn device on."""
+        await self._heater.turn_on()
+
+    async def async_turn_off(self):
+        """Turn device off."""
+        await self._heater.turn_off()
+
+    async def async_update(self):
+        """Retrieve latest state."""
+        try:
+            token_info = await self._heater.control.refresh_access_token()
+        except ambiclimate.AmbiclimateOauthError:
+            _LOGGER.error("Failed to refresh access token")
+            return
+
+        if token_info:
+            await self._store.async_save(token_info)
+
+        self._data = await self._heater.update_device()
diff --git a/homeassistant/components/ambiclimate/config_flow.py b/homeassistant/components/ambiclimate/config_flow.py
new file mode 100644
index 00000000000..9bbdfceb7b0
--- /dev/null
+++ b/homeassistant/components/ambiclimate/config_flow.py
@@ -0,0 +1,153 @@
+"""Config flow for Ambiclimate."""
+import logging
+
+import ambiclimate
+
+from homeassistant import config_entries
+from homeassistant.components.http import HomeAssistantView
+from homeassistant.core import callback
+from homeassistant.helpers.aiohttp_client import async_get_clientsession
+from .const import (AUTH_CALLBACK_NAME, AUTH_CALLBACK_PATH, CONF_CLIENT_ID,
+                    CONF_CLIENT_SECRET, DOMAIN, STORAGE_VERSION, STORAGE_KEY)
+
+DATA_AMBICLIMATE_IMPL = 'ambiclimate_flow_implementation'
+
+_LOGGER = logging.getLogger(__name__)
+
+
+@callback
+def register_flow_implementation(hass, client_id, client_secret):
+    """Register a ambiclimate implementation.
+
+    client_id: Client id.
+    client_secret: Client secret.
+    """
+    hass.data.setdefault(DATA_AMBICLIMATE_IMPL, {})
+
+    hass.data[DATA_AMBICLIMATE_IMPL] = {
+        CONF_CLIENT_ID: client_id,
+        CONF_CLIENT_SECRET: client_secret,
+    }
+
+
+@config_entries.HANDLERS.register('ambiclimate')
+class AmbiclimateFlowHandler(config_entries.ConfigFlow):
+    """Handle a config flow."""
+
+    VERSION = 1
+    CONNECTION_CLASS = config_entries.CONN_CLASS_CLOUD_POLL
+
+    def __init__(self):
+        """Initialize flow."""
+        self._registered_view = False
+        self._oauth = None
+
+    async def async_step_user(self, user_input=None):
+        """Handle external yaml configuration."""
+        if self.hass.config_entries.async_entries(DOMAIN):
+            return self.async_abort(reason='already_setup')
+
+        config = self.hass.data.get(DATA_AMBICLIMATE_IMPL, {})
+
+        if not config:
+            _LOGGER.debug("No config")
+            return self.async_abort(reason='no_config')
+
+        return await self.async_step_auth()
+
+    async def async_step_auth(self, user_input=None):
+        """Handle a flow start."""
+        if self.hass.config_entries.async_entries(DOMAIN):
+            return self.async_abort(reason='already_setup')
+
+        errors = {}
+
+        if user_input is not None:
+            errors['base'] = 'follow_link'
+
+        if not self._registered_view:
+            self._generate_view()
+
+        return self.async_show_form(
+            step_id='auth',
+            description_placeholders={'authorization_url':
+                                      await self._get_authorize_url(),
+                                      'cb_url': self._cb_url()},
+            errors=errors,
+        )
+
+    async def async_step_code(self, code=None):
+        """Received code for authentication."""
+        if self.hass.config_entries.async_entries(DOMAIN):
+            return self.async_abort(reason='already_setup')
+
+        token_info = await self._get_token_info(code)
+
+        if token_info is None:
+            return self.async_abort(reason='access_token')
+
+        config = self.hass.data[DATA_AMBICLIMATE_IMPL].copy()
+        config['callback_url'] = self._cb_url()
+
+        return self.async_create_entry(
+            title="Ambiclimate",
+            data=config,
+        )
+
+    async def _get_token_info(self, code):
+        oauth = self._generate_oauth()
+        try:
+            token_info = await oauth.get_access_token(code)
+        except ambiclimate.AmbiclimateOauthError:
+            _LOGGER.error("Failed to get access token", exc_info=True)
+            return None
+
+        store = self.hass.helpers.storage.Store(STORAGE_VERSION, STORAGE_KEY)
+        await store.async_save(token_info)
+
+        return token_info
+
+    def _generate_view(self):
+        self.hass.http.register_view(AmbiclimateAuthCallbackView())
+        self._registered_view = True
+
+    def _generate_oauth(self):
+        config = self.hass.data[DATA_AMBICLIMATE_IMPL]
+        clientsession = async_get_clientsession(self.hass)
+        callback_url = self._cb_url()
+
+        oauth = ambiclimate.AmbiclimateOAuth(config.get(CONF_CLIENT_ID),
+                                             config.get(CONF_CLIENT_SECRET),
+                                             callback_url,
+                                             clientsession)
+        return oauth
+
+    def _cb_url(self):
+        return '{}{}'.format(self.hass.config.api.base_url,
+                             AUTH_CALLBACK_PATH)
+
+    async def _get_authorize_url(self):
+        oauth = self._generate_oauth()
+        return oauth.get_authorize_url()
+
+
+class AmbiclimateAuthCallbackView(HomeAssistantView):
+    """Ambiclimate Authorization Callback View."""
+
+    requires_auth = False
+    url = AUTH_CALLBACK_PATH
+    name = AUTH_CALLBACK_NAME
+
+    async def get(self, request):
+        """Receive authorization token."""
+        code = request.query.get('code')
+        if code is None:
+            return "No code"
+        hass = request.app['hass']
+        hass.async_create_task(
+            hass.config_entries.flow.async_init(
+                DOMAIN,
+                context={'source': 'code'},
+                data=code,
+            ))
+        return "OK!"
diff --git a/homeassistant/components/ambiclimate/const.py b/homeassistant/components/ambiclimate/const.py
new file mode 100644
index 00000000000..b1b9f4c2767
--- /dev/null
+++ b/homeassistant/components/ambiclimate/const.py
@@ -0,0 +1,14 @@
+"""Constants used by the Ambiclimate component."""
+
+ATTR_VALUE = 'value'
+CONF_CLIENT_ID = 'client_id'
+CONF_CLIENT_SECRET = 'client_secret'
+DOMAIN = 'ambiclimate'
+SERVICE_COMFORT_FEEDBACK = 'send_comfort_feedback'
+SERVICE_COMFORT_MODE = 'set_comfort_mode'
+SERVICE_TEMPERATURE_MODE = 'set_temperature_mode'
+STORAGE_KEY = 'ambiclimate_auth'
+STORAGE_VERSION = 1
+
+AUTH_CALLBACK_NAME = 'api:ambiclimate'
+AUTH_CALLBACK_PATH = '/api/ambiclimate'
diff --git a/homeassistant/components/ambiclimate/manifest.json b/homeassistant/components/ambiclimate/manifest.json
new file mode 100644
index 00000000000..f3b3450f163
--- /dev/null
+++ b/homeassistant/components/ambiclimate/manifest.json
@@ -0,0 +1,12 @@
+{
+  "domain": "ambiclimate",
+  "name": "Ambiclimate",
+  "documentation": "https://www.home-assistant.io/components/ambiclimate",
+  "requirements": [
+    "ambiclimate==0.1.1"
+  ],
+  "dependencies": [],
+  "codeowners": [
+    "@danielhiversen"
+  ]
+}
diff --git a/homeassistant/components/ambiclimate/services.yaml b/homeassistant/components/ambiclimate/services.yaml
new file mode 100644
index 00000000000..19f47c6c35f
--- /dev/null
+++ b/homeassistant/components/ambiclimate/services.yaml
@@ -0,0 +1,36 @@
+# Describes the format for available services for ambiclimate
+
+set_comfort_mode:
+  description: >
+    Enable comfort mode on your AC
+  fields:
+    Name:
+      description: >
+        String with device name.
+      example: Bedroom
+
+send_comfort_feedback:
+  description: >
+    Send feedback for comfort mode
+  fields:
+    Name:
+      description: >
+        String with device name.
+      example: Bedroom
+    Value:
+      description: >
+        Send any of the following comfort values: too_hot, too_warm, bit_warm, comfortable, bit_cold, too_cold, freezing
+      example: bit_warm
+
+set_temperature_mode:
+  description: >
+    Enable temperature mode on your AC
+  fields:
+    Name:
+      description: >
+        String with device name.
+      example: Bedroom
+    Value:
+      description: >
+        Target value in celsius
+      example: 22
diff --git a/homeassistant/components/ambiclimate/strings.json b/homeassistant/components/ambiclimate/strings.json
new file mode 100644
index 00000000000..78386077af2
--- /dev/null
+++ b/homeassistant/components/ambiclimate/strings.json
@@ -0,0 +1,23 @@
+{
+  "config": {
+    "title": "Ambiclimate",
+    "step": {
+      "auth": {
+        "title": "Authenticate Ambiclimate",
+        "description": "Please follow this [link]({authorization_url}) and <b>Allow</b> access to your Ambiclimate account, then come back and press <b>Submit</b> below.\n(Make sure the specified callback url is {cb_url})"
+      }
+    },
+    "create_entry": {
+      "default": "Successfully authenticated with Ambiclimate"
+    },
+    "error": {
+      "no_token": "Not authenticated with Ambiclimate",
+      "follow_link": "Please follow the link and authenticate before pressing Submit"
+    },
+    "abort": {
+      "already_setup": "The Ambiclimate account is configured.",
+      "no_config": "You need to configure Ambiclimate before being able to authenticate with it. [Please read the instructions](https://www.home-assistant.io/components/ambiclimate/).",
+      "access_token": "Unknown error generating an access token."
+    }
+  }
+}
\ No newline at end of file
diff --git a/homeassistant/config_entries.py b/homeassistant/config_entries.py
index 393a046b5a2..a2b34a00efd 100644
--- a/homeassistant/config_entries.py
+++ b/homeassistant/config_entries.py
@@ -142,6 +142,7 @@ SOURCE_IMPORT = 'import'
 HANDLERS = Registry()
 # Components that have config flows. In future we will auto-generate this list.
 FLOWS = [
+    'ambiclimate',
     'ambient_station',
     'axis',
     'cast',
diff --git a/requirements_all.txt b/requirements_all.txt
index 1f09fd64542..4201c26ffe3 100644
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -163,6 +163,9 @@ alarmdecoder==1.13.2
 # homeassistant.components.alpha_vantage
 alpha_vantage==2.1.0
 
+# homeassistant.components.ambiclimate
+ambiclimate==0.1.1
+
 # homeassistant.components.amcrest
 amcrest==1.4.0
 
diff --git a/requirements_test_all.txt b/requirements_test_all.txt
index b22a3be31b0..552e9cbc7ab 100644
--- a/requirements_test_all.txt
+++ b/requirements_test_all.txt
@@ -57,6 +57,9 @@ aioswitcher==2019.3.21
 # homeassistant.components.unifi
 aiounifi==4
 
+# homeassistant.components.ambiclimate
+ambiclimate==0.1.1
+
 # homeassistant.components.apns
 apns2==0.3.0
 
diff --git a/script/gen_requirements_all.py b/script/gen_requirements_all.py
index ad0a833436e..14303bd6d65 100755
--- a/script/gen_requirements_all.py
+++ b/script/gen_requirements_all.py
@@ -42,6 +42,7 @@ COMMENT_REQUIREMENTS = (
 )
 
 TEST_REQUIREMENTS = (
+    'ambiclimate',
     'aioambient',
     'aioautomatic',
     'aiobotocore',
diff --git a/tests/components/ambiclimate/__init__.py b/tests/components/ambiclimate/__init__.py
new file mode 100644
index 00000000000..b3f9a5ad3a6
--- /dev/null
+++ b/tests/components/ambiclimate/__init__.py
@@ -0,0 +1 @@
+"""Tests for the Ambiclimate component."""
diff --git a/tests/components/ambiclimate/test_config_flow.py b/tests/components/ambiclimate/test_config_flow.py
new file mode 100644
index 00000000000..f61665b9e5b
--- /dev/null
+++ b/tests/components/ambiclimate/test_config_flow.py
@@ -0,0 +1,123 @@
+"""Tests for the Ambiclimate config flow."""
+import ambiclimate
+from unittest.mock import Mock, patch
+
+from homeassistant.components.ambiclimate import config_flow
+from homeassistant.setup import async_setup_component
+from homeassistant.util import aiohttp
+from homeassistant import data_entry_flow
+from tests.common import mock_coro
+
+
+async def init_config_flow(hass):
+    """Init a configuration flow."""
+    await async_setup_component(hass, 'http', {
+        'http': {
+            'base_url': 'https://hass.com'
+        }
+    })
+
+    config_flow.register_flow_implementation(hass, 'id', 'secret')
+    flow = config_flow.AmbiclimateFlowHandler()
+
+    flow.hass = hass
+    return flow
+
+
+async def test_abort_if_no_implementation_registered(hass):
+    """Test we abort if no implementation is registered."""
+    flow = config_flow.AmbiclimateFlowHandler()
+    flow.hass = hass
+
+    result = await flow.async_step_user()
+    assert result['type'] == data_entry_flow.RESULT_TYPE_ABORT
+    assert result['reason'] == 'no_config'
+
+
+async def test_abort_if_already_setup(hass):
+    """Test we abort if Ambiclimate is already setup."""
+    flow = await init_config_flow(hass)
+
+    with patch.object(hass.config_entries, 'async_entries', return_value=[{}]):
+        result = await flow.async_step_user()
+    assert result['type'] == data_entry_flow.RESULT_TYPE_ABORT
+    assert result['reason'] == 'already_setup'
+
+    with patch.object(hass.config_entries, 'async_entries', return_value=[{}]):
+        result = await flow.async_step_code()
+    assert result['type'] == data_entry_flow.RESULT_TYPE_ABORT
+    assert result['reason'] == 'already_setup'
+
+
+async def test_full_flow_implementation(hass):
+    """Test registering an implementation and finishing flow works."""
+    config_flow.register_flow_implementation(hass, None, None)
+    flow = await init_config_flow(hass)
+
+    result = await flow.async_step_user()
+    assert result['type'] == data_entry_flow.RESULT_TYPE_FORM
+    assert result['step_id'] == 'auth'
+    assert result['description_placeholders']['cb_url']\
+        == 'https://hass.com/api/ambiclimate'
+
+    url = result['description_placeholders']['authorization_url']
+    assert 'https://api.ambiclimate.com/oauth2/authorize' in url
+    assert 'client_id=id' in url
+    assert 'response_type=code' in url
+    assert 'redirect_uri=https%3A%2F%2Fhass.com%2Fapi%2Fambiclimate' in url
+
+    with patch('ambiclimate.AmbiclimateOAuth.get_access_token',
+               return_value=mock_coro('test')):
+        result = await flow.async_step_code('123ABC')
+    assert result['type'] == data_entry_flow.RESULT_TYPE_CREATE_ENTRY
+    assert result['title'] == 'Ambiclimate'
+    assert result['data']['callback_url'] == 'https://hass.com/api/ambiclimate'
+    assert result['data']['client_secret'] == 'secret'
+    assert result['data']['client_id'] == 'id'
+
+    with patch('ambiclimate.AmbiclimateOAuth.get_access_token',
+               return_value=mock_coro(None)):
+        result = await flow.async_step_code('123ABC')
+    assert result['type'] == data_entry_flow.RESULT_TYPE_ABORT
+
+    with patch('ambiclimate.AmbiclimateOAuth.get_access_token',
+               side_effect=ambiclimate.AmbiclimateOauthError()):
+        result = await flow.async_step_code('123ABC')
+    assert result['type'] == data_entry_flow.RESULT_TYPE_ABORT
+
+
+async def test_abort_no_code(hass):
+    """Test if no code is given to step_code."""
+    config_flow.register_flow_implementation(hass, None, None)
+    flow = await init_config_flow(hass)
+
+    result = await flow.async_step_code('invalid')
+    assert result['type'] == data_entry_flow.RESULT_TYPE_ABORT
+    assert result['reason'] == 'access_token'
+
+
+async def test_already_setup(hass):
+    """Test when already setup."""
+    config_flow.register_flow_implementation(hass, None, None)
+    flow = await init_config_flow(hass)
+
+    with patch.object(hass.config_entries, 'async_entries', return_value=True):
+        result = await flow.async_step_user()
+
+    assert result['type'] == data_entry_flow.RESULT_TYPE_ABORT
+    assert result['reason'] == 'already_setup'
+
+
+async def test_view(hass):
+    """Test view."""
+    hass.config_entries.flow.async_init = Mock()
+
+    request = aiohttp.MockRequest(b'', query_string='code=test_code')
+    request.app = {'hass': hass}
+    view = config_flow.AmbiclimateAuthCallbackView()
+    assert await view.get(request) == 'OK!'
+
+    request = aiohttp.MockRequest(b'', query_string='')
+    request.app = {'hass': hass}
+    view = config_flow.AmbiclimateAuthCallbackView()
+    assert await view.get(request) == 'No code'