How to Broadcast Messages on Google Home (Intercom Guide)
To broadcast messages on Google Home, say “Hey Google, broadcast” followed by your message, and Google plays it on every compatible speaker and display signed into the same account and home. You can also start a broadcast from the Google Home app, send it to a single room, and — on most Nest speakers and displays — reply back so the conversation works like a household intercom. Broadcast is free, needs no extra hardware, and works over your existing Wi-Fi.
What Broadcast (Intercom) actually does
Broadcast is Google’s built-in home-intercom feature. When you trigger it, your voice (or a typed message from the app) is recorded and pushed to every Google Nest and Google Home speaker, smart display, and phone running the Google Home app within the same household structure. It’s a one-to-many announcement — useful for calling everyone to dinner, telling the house you’re leaving, or a quick “good morning.”
It’s worth understanding why it works the way it does. Broadcast keys off your home in the Google Home app — the group of devices and people you’ve assigned to one address. Anything in that home receives the message; anything outside it (a speaker at the office, a friend’s device) does not. That’s also why getting your home and rooms set up correctly matters more than any voice command, which is covered in our first-time Google Home & Nest setup guide.
How to broadcast to your whole home
The fastest way is by voice. Stand near any speaker or display and use one of these:
- 1Say “Hey Google, broadcast” (or “shout,” “tell everyone,” “announce”)
- 2Speak your message after the chime
- 3Google records and plays it on every device in the home
- Open-ended: “Hey Google, broadcast that dinner is ready.” Google captures whatever you say next.
- Quick phrases: Some short messages trigger a fun, pre-set sound — for example “broadcast it’s time to wake up,” “broadcast we’re leaving,” or “broadcast time for bed.”
You can also broadcast from the Google Home app: look for the Broadcast control (often under the home’s feed or the “+” / activity area), then speak or type your message. Because app menus shift between versions, hunt for the word “Broadcast” rather than a specific screen name — if you’ve recently noticed things moving around, see what changed between the Google Home app and Assistant.
How to broadcast to one room or device
You don’t have to wake the whole house. If your speakers are assigned to rooms, you can target one:
- Say “Hey Google, broadcast to the Kitchen” (use your exact room name).
- Speak your message after the chime.
- Only devices in that room play it.
This only works if your rooms are named and devices are correctly assigned — the same room structure that powers automations. If your room names are messy or a device is in the wrong room, fix that first; our step-by-step on adding a device to Google Home walks through assigning rooms.
Replying: using it as a true intercom
On most Nest speakers and displays, Broadcast is two-way. After you hear a broadcast, say “Hey Google, reply” and your response goes back to the device that started the broadcast (and, in many cases, the broader group). That’s what makes it function as a household intercom rather than a one-way PA system.
A few practical notes on replies:
- Replies generally need to happen within a short window after the original broadcast — it’s designed for back-and-forth, not delayed messaging.
- Reply support depends on the device. Newer Nest hardware handles it well; some older or third-party “works with Google” speakers may broadcast but not reply.
- The phone running the Google Home app can both send and receive, which is handy for reaching the house while you’re in the yard.
Broadcast vs. an automated announcement
People often confuse a manual broadcast with a scheduled announcement built in a routine. They overlap but aren’t the same:
- Triggered live by your voice or the app
- Plays your actual recorded voice (or typed text)
- Best for spontaneous, one-off messages
- Triggered by a schedule, command, or condition
- Plays a fixed, pre-written message via Assistant
- Best for recurring reminders like “time for school”
If you find yourself broadcasting the same thing every morning, build it once as a routine instead. Our guide to routines and automations in Google Home shows how to add an announcement action and schedule it.
When Broadcast won’t work: troubleshooting
Broadcast is simple, so failures almost always trace back to setup, network, or device grouping rather than the feature itself.
- One speaker stays silent. It’s likely offline, on a different account, or not assigned to the home. Confirm it appears in the Google Home app; if it shows as unavailable, work through our fix for “device is offline” errors.
- It plays in some rooms but not others. A device may be missing a room assignment, so it isn’t targeted by room-specific broadcasts and can be skipped. Re-check room assignments.
- Nothing plays at all. Make sure the devices share the same home and the same Google account. A speaker added under a second account won’t receive broadcasts from the first.
- Replies don’t go through. Confirm the receiving device supports two-way reply, and that you replied promptly after the broadcast.
- It’s flaky on a weak network. Broadcast leans on a stable local connection. If your speakers drop regularly, the underlying Wi-Fi is usually the culprit — see our smart-home Wi-Fi best practices.
Frequently asked questions
Can I broadcast to a Google Home speaker from my phone when I’m away?
Yes. As long as your phone has the Google Home app, is signed into the same account, and has a data or Wi-Fi connection, you can broadcast to your home speakers from anywhere. The message plays on the household devices, and people there can reply.
Does Broadcast work between two different homes or accounts?
No. Broadcast is scoped to a single home in the Google Home app. Devices in another home, or signed into a different Google account, won’t receive your broadcasts. To reach them you’d need to be added to that home as a member.
Why does Broadcast ignore Do Not Disturb?
By design. Broadcast is meant for urgent, get-everyone’s-attention messages, so it plays at an audible level even on devices set to Do Not Disturb or with notifications quieted. If that’s disruptive, broadcast to a specific room instead of the whole home.
Can I send a typed message instead of speaking?
Yes. In the Google Home app’s Broadcast control you can type a message, and Assistant will read it aloud on your devices — useful in a quiet room or when voice isn’t practical.
