Does Home Assistant work without an internet connection?
Yes. Home Assistant runs on your own hardware in your home, so it can keep working when the internet is down.
Devices that talk to Home Assistant using local protocols, such as Zigbee, Z-Wave, Matter, Thread, and ESPHome, do not need any internet connection at all. Your lights, switches, sensors, and automationsAutomations in Home Assistant allow you to automatically respond to things that happen in and around your home. [Learn more] keep responding the same way they do every other day.
A few things still need the internet, and that is up to you:
- Devices that only talk to a vendor’s cloud. If a brand requires its own cloud service to work, that integration cannot reach the device when your internet is down. Whenever there is a local alternative, Home Assistant prefers it.
- Home Assistant Cloud features such as remote access, and the Apple Home, Google Home, and Amazon Alexa integrations.
- Updates and access to the appApps are additional standalone third-party software packages that can be installed on Home Assistant OS. [Learn more] store.
Choosing devices that work with Home Assistant locally is the most reliable way to keep your smart home running through any kind of internet outage. The Works with Home Assistant program highlights devices that have been tested for local control.
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