Stiebel DHE (Socket.IO polling) – Home Assistant Custom Integration

This is a minimal Home Assistant custom integration to control a Stiebel DHE via its local Socket.IO (Engine.IO v3) long-polling interface.

What you get

• A number entity to read and set the DHE setpoint temperature (ODB id 0), in 0.5°C steps.
• Writes are performed only via ODB request id 66 (same mechanism as the vendor web UI), with a randomized request address.
• The token can refresh during login; the integration stores the refreshed token back into the config entry automatically.

Install

1. Copy custom_components/stiebel_dhe/ into your Home Assistant config directory:
   • <config>/custom_components/stiebel_dhe/
2. Restart Home Assistant.

Configure

Add the integration via UI:

• Settings -> Devices & services -> Add Integration -> Stiebel DHE
• Enter:
  • Host URL like http://192.168.2.87:8443
  • Token (the same token you used in Homey)
  • Optional: Client name
  • Optional: Scan interval