@lina-sayeb Hi,
At the moment, Zircon3D doesn’t support importing external 3D models (such as .gltf files) yet.
For now, you have a couple of options:
1. Use the existing Air Conditioner model
You can place the current Air Conditioner object in the scene as a visual placeholder for the heater.
2. Add the real device from Home Assistant
If the heater is a device in Home Assistant, you can:
Open the Monitoring tab
Find your heater / temperature entity
Drag and drop it onto the floorplan
It will be placed in the scene as a sensor, and you’ll still be able to see all the monitoring data associated with it.
We know that allowing users to add custom objects is a useful feature, and it’s something we plan to improve in the future.
If you have any other questions while working on your project, feel free to ask, happy to help!