How to make the existing Daikin Smart AC device Matter Compatible?

Process Overview

1. Add your Daikin Smart AC to Home Assistant.
2. Install the Matter Bridge add-on. This add-on connects to your Home Assistant instance and can expose your entities to a Matter fabric.
3. Configure the add-on. Install matterbridge-hass companion plugin and optionally configure devices or entities (in this case, your AC) you want to make visible via Matter.
4. Pair Matter Bridge with a Matter controller. Use a Matter-enabled app (like Google Home, Apple Home, or Amazon Alexa) to commission the bridge, and your AC will appear as a native device in that app.

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Step 1: Add your Smart AC to Home Assistant

• Open Daikin Smart AC app. Go to Main Menu → Integration → Home Assistant. Follow the instructions.
• For detailed instructions, refer to:
  Daikin HA Custom Integration

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Step 2: Install and Configure Matterbridge

For detailed instructions, follow:
Matterbridge Home Assistant Add-on

1. Add the Matterbridge repository

• In Home Assistant, go to Settings → Add-ons.
• Click the three-dot menu in the top-right corner and select Repositories.

• Paste the URL for the Matterbridge add-on repository:
  https://github.com/Luligu/matterbridge-home-assistant-addon

2. Install the Matterbridge add-on

• After adding the repository, search for the Matterbridge add-on in the add-on store and click Install.
• Once installed, enable Start on boot and Watchdog for reliability, then click Start.
• Go to Matter Bridge Web UI → select matterbridge-hass from the plugin list → click Install.
  • This plugin allows Home Assistant devices and individual entities to be exposed to the Matter ecosystem.

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Step 3: Configure the Add-on

1. Configure matterbridge-hass companion plugin

• Once installed, click the gear icon to setup matterbridge-hass.
• Setup Home Assistant Long-Lived Access Token for matterbridge-hass to establish a WebSocket connection with Home Assistant.

• To generate this token:
  • Click on your account → Security.
  • Navigate to Long-Lived Access Token section.
  • Click on Create Token.
• Restart the MatterBridge as required to complete the setup.
• On successful completion, you will see the list of Home Assistant devices that will be exposed to the Matter ecosystem via Matter Bridge.

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Step 4: Pair / Commission Matterbridge to Your Matter Ecosystem

1. Prepare for pairing

• Open the Matterbridge Web UI in Home Assistant.
• Locate the Matter onboarding QR code on the main interface.

2. Add Matterbridge to your ecosystem

• Open the smart home app you want to use (e.g., Google Home, Alexa, or Apple Home).
• Start the Add Device process for a Matter device.
• Use your phone’s camera to scan the QR code from the Matterbridge Web UI.
• Follow the on-screen instructions in the app to pair the Home Assistant bridge.
• You may see a warning that it is an “uncertified” device; you can safely proceed.

3. Control your AC

• Once commissioned, your non-Matter AC will appear in your Matter-compatible app (e.g., Google Home) as a climate device.
• You can now control its basic functions (on/off, temperature) via your Matter ecosystem.

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