diff --git a/homeassistant/components/fan/dyson.py b/homeassistant/components/fan/dyson.py
index fbe9ffc948c..3eb4646e6dc 100644
--- a/homeassistant/components/fan/dyson.py
+++ b/homeassistant/components/fan/dyson.py
@@ -18,6 +18,9 @@ _LOGGER = logging.getLogger(__name__)
 
 CONF_NIGHT_MODE = 'night_mode'
 
+ATTR_IS_NIGHT_MODE = 'is_night_mode'
+ATTR_IS_AUTO_MODE = 'is_auto_mode'
+
 DEPENDENCIES = ['dyson']
 DYSON_FAN_DEVICES = 'dyson_fan_devices'
 
@@ -158,7 +161,7 @@ class DysonPureCoolLinkDevice(FanEntity):
     def is_on(self):
         """Return true if the entity is on."""
         if self._device.state:
-            return self._device.state.fan_state == "FAN"
+            return self._device.state.fan_mode == "FAN"
         return False
 
     @property
@@ -232,3 +235,11 @@ class DysonPureCoolLinkDevice(FanEntity):
     def supported_features(self) -> int:
         """Flag supported features."""
         return SUPPORT_OSCILLATE | SUPPORT_SET_SPEED
+
+    @property
+    def device_state_attributes(self) -> dict:
+        """Return optional state attributes."""
+        return {
+            ATTR_IS_NIGHT_MODE: self.is_night_mode,
+            ATTR_IS_AUTO_MODE: self.is_auto_mode
+            }
diff --git a/tests/components/fan/test_dyson.py b/tests/components/fan/test_dyson.py
index 49338e123e3..2953ea2754b 100644
--- a/tests/components/fan/test_dyson.py
+++ b/tests/components/fan/test_dyson.py
@@ -2,8 +2,11 @@
 import unittest
 from unittest import mock
 
+from homeassistant.setup import setup_component
+from homeassistant.components import dyson as dyson_parent
 from homeassistant.components.dyson import DYSON_DEVICES
-from homeassistant.components.fan import dyson
+from homeassistant.components.fan import (dyson, ATTR_SPEED, ATTR_SPEED_LIST,
+                                          ATTR_OSCILLATING)
 from tests.common import get_test_home_assistant
 from libpurecoollink.const import FanSpeed, FanMode, NightMode, Oscillation
 from libpurecoollink.dyson_pure_state import DysonPureCoolState
@@ -91,6 +94,45 @@ class DysonTest(unittest.TestCase):
         self.hass.data[dyson.DYSON_DEVICES] = [device_fan, device_non_fan]
         dyson.setup_platform(self.hass, None, _add_device)
 
+    @mock.patch('libpurecoollink.dyson.DysonAccount.devices',
+                return_value=[_get_device_on()])
+    @mock.patch('libpurecoollink.dyson.DysonAccount.login', return_value=True)
+    def test_get_state_attributes(self, mocked_login, mocked_devices):
+        """Test async added to hass."""
+        setup_component(self.hass, dyson_parent.DOMAIN, {
+            dyson_parent.DOMAIN: {
+                dyson_parent.CONF_USERNAME: "email",
+                dyson_parent.CONF_PASSWORD: "password",
+                dyson_parent.CONF_LANGUAGE: "US",
+                }
+            })
+        self.hass.block_till_done()
+        state = self.hass.states.get("{}.{}".format(
+            dyson.DOMAIN,
+            mocked_devices.return_value[0].name))
+
+        assert dyson.ATTR_IS_NIGHT_MODE in state.attributes
+        assert dyson.ATTR_IS_AUTO_MODE in state.attributes
+        assert ATTR_SPEED in state.attributes
+        assert ATTR_SPEED_LIST in state.attributes
+        assert ATTR_OSCILLATING in state.attributes
+
+    @mock.patch('libpurecoollink.dyson.DysonAccount.devices',
+                return_value=[_get_device_on()])
+    @mock.patch('libpurecoollink.dyson.DysonAccount.login', return_value=True)
+    def test_async_added_to_hass(self, mocked_login, mocked_devices):
+        """Test async added to hass."""
+        setup_component(self.hass, dyson_parent.DOMAIN, {
+            dyson_parent.DOMAIN: {
+                dyson_parent.CONF_USERNAME: "email",
+                dyson_parent.CONF_PASSWORD: "password",
+                dyson_parent.CONF_LANGUAGE: "US",
+                }
+            })
+        self.hass.block_till_done()
+        self.assertEqual(len(self.hass.data[dyson.DYSON_DEVICES]), 1)
+        assert mocked_devices.return_value[0].add_message_listener.called
+
     def test_dyson_set_speed(self):
         """Test set fan speed."""
         device = _get_device_on()