Control smart home devices

You can control smart home devices including lights, switches, outlets, and thermostats using the Google Assistant on your phone or tablet. 

For example, you can say:

  • "Ok Google, set the heat to 70"
  • "Ok Google, turn on lights in the kitchen"    

What you need

Step 1: Set up your devices

If you haven’t already, set up your smart home devices by following the steps provided by the device maker.

Step 2: Connect devices to your Google Assistant

  1. On your Android phone or tablet, touch and hold the Home button or say "Ok Google."
  2. At the top right, tap Explore & Your stuff and then More More and then Settings and then Home control.
  3. In the "Devices" tab, at the bottom right tap Add Add.
  4. Tap the type of device you want to connect, then follow the steps.
  5. When the pairing is complete, tap Done.

Step 3: Set nicknames for devices

You can choose names to call your smart home devices, for example, "ceiling light" or "Ben’s lamp."

  1. On your Android phone or tablet, touch and hold the Home button or say "Ok Google."
  2. At the top right, tap Explore & Your stuff and thenMoreMore and then Settings and then Home control.
  3. In the "Devices" tab, tap a device you want to rename.
  4. Tap Nickname and thenenter a nickname and then OK.
  5. To see your device’s new nickname, tap Device details.

Step 4: Assign devices to a room

To control your devices more easily, assign them to a room. For example, if you assign lights to your bedroom, you can say "Turn on lights in the bedroom."

Add a room
  1. On your Android phone or tablet, touch and hold the Home button or say "Ok Google."
  2. At the top right, tap Explore & Your stuff and then MoreMore and then Settings and then Home control.
  3. In the "Rooms" tab, at the bottom right tap Add Add.
  4. From here you can either:
    • Select a room and then Next.
    • Add a new room: Scroll down, then tap Custom room and then enter a room name and then Done.
  5. To add a device to that room, tap the box next to the device name and then Done. You can add each device to one room only.
Add devices to a room
  1. On your Android phone or tablet, touch and hold the Home button or say "Ok Google."
  2. At the top right, tap Explore & Your stuff and then More More and then Settings and then Home control.
  3. In the "Rooms" tab, tap the room you want to add devices to.
  4. Under "Add devices," choose the devices you want to add or tap Select all.
  5. Tap Done.
Check for new devices

You can check for new devices that haven’t been assigned to a room. If you’re using SmartThings, skip to the steps below.

  1. On your Android phone or tablet, touch and hold the Home button or say "Ok Google."
  2. At the top right, tap Explore & Your stuff and then More More and then Settings and then Home control.
  3. In the "Devices" tab, you can see new devices as ‘Unassigned.’
  4. Follow the steps to set a nickname for these devices and add them to a room.

Check for new SmartThings devices

  1. On your Android phone or tablet, touch and hold the Home button or say "Ok Google."
  2. At the top right, tap Explore & Your stuff and then More More and then Settings and then Home control.
  3. In the "Devices" tab, at the top right tap More More and then Manage accounts.
  4. Tap SmartThings.
  5. Tap Check for new devices and then select a location in the dropdown and then Authorize.
  6. At the bottom you’ll see the number of devices added. Follow the steps to add the devices to a room.
Change a device’s room
  1. On your Android phone or tablet, touch and hold the Home button or say "Ok Google."
  2. At the top right, tap Explore & Your stuff and then More More and then Settings and then Home control.
  3. In the "Rooms" tab, tap the room you want to move a device from.
  4. Next to the device you want to move, tap Move.
  5. Now you can either:
    • Select a room to move the device into.
    • Create a room that’s not listed: Scroll down, then tap Custom room and then enter a room name and thenOK.
  6. Tap Done.
Rename a room
  1. On your Android phone or tablet, touch and hold the Home button or say "Ok Google."
  2. At the top right, tap Explore & Your stuff and then More More and thenSettings and then Home control.
  3. In the "Rooms" tab, tap the room you want to rename.
  4. Tap the room name again, then enter a new name.
  5. Tap OK and then Done.
Delete a room

Step 1: Move devices out of the room

Before you can delete a room, you’ll need to move all devices out of that room. Follow the steps above to change a device’s room.

Step 2: Delete the room

  1. In the "Rooms" tab, tap the room you want to delete.
  2. At the top, tap Delete Trash and then OK.

Step 5: Control devices using commands

Tip: You can also create shortcut commands.

  1. Say "Ok Google" or press the button to talk to your Google Assistant. 
  2. Say a command:
Control lights
  • Turn on/off [light name].
  • Turn on/off all of the lights.
  • Turn on/off lights in [room name].
  • Dim the [light name].
  • Brighten the [light name].
  • Set [light name] to 50%.
  • Turn [light name] green.
Control thermostats

Turn on thermostat

Note: You must say a mode.

  • Turn on heating/cooling mode.
  • Turn on heat-cool mode.

Turn off thermostat

  • Turn off thermostat.

Set the temperature

  • Set the heat to 68.
  • Set heat-cool to 72.
  • Set the air conditioning to 70.
  • Set the [room name] thermostat to 70.

Adjust the temperature

Note: You can say "temp" or "temperature."

  • Make it warmer/cooler.
  • Raise/lower the temp.
  • Raise/lower the temp 2 degrees.

Switch heating or cooling modes

  • Turn on heating/cooling.
  • Set thermostat to cooling/heating.
  • Turn thermostat to heat-cool mode.

Find out the temperature

  • What’s the thermostat set to?
  • What’s the temperature outside?
Control switches or outlets
  • Turn on/off the [outlet name].
  • Turn on/off the [switch name].

Disconnect devices from your Google Assistant

If you no longer want to control your smart home devices using your Assistant, you can disconnect your account.

  1. On your Android phone or tablet, touch and hold the Home button or say "Ok Google."
  2. At the top right, tap Explore & Your stuff and then More More and then Settings and then Home control.
  3. In the "Devices" tab, at the top right tap More More and then Manage accounts.
  4. Tap the account you want to disconnect and then Unlink account and then Unlink.

Fix problems

Google Assistant can’t control device

To try fixing the issue, rename your device. Read the tips below, then follow the steps to set a new nickname.

Tips for renaming your device:

  • Don’t include numbers, special characters, or room names.
  • If you’re naming lights connected to plugs or switches, add "plug" or "switch" to the nickname.
  • Avoid similar names (for example, "Table light left" and "Table light right").
Can’t pair Philips Hue bridge with Google Assistant
  1. Check to see if your Philips Hue bridge:
    • Has power
    • Has all its top lights on
    • Is plugged in to your Wi-Fi router
  2. See if your Philips Hue bridge has been paired with the Philips Hue cloud. To check:
  3. Connect your phone and Philips Hue bridge to the same Wi-Fi network and router.

If those steps don’t work, try restarting your phone and the Philips Hue bridge. If you have questions about your Philips Hue bridge or need more help, contact Philips.

Related pages

Katie is a Google Assistant expert and author of this help page. Leave her feedback below about the page.

Was this article helpful?
How can we improve it?