homeassistant_helios_easycontrol3.Home Assistant custom integration for Helios easyControls 3.0 ventilation units (KWL series). Local-only via the device's WebSocket protocol — no cloud, no MQTT. 40+ entities for monitoring & control, weekly schedule, filter management, cool recovery. HACS-ready. Forked from frawe/EasyControls3_homeassistant.