Hi beegee, you probably bought the SmartHomePanel (SHP) - which has an even louder fan than the DPro. I solved this by moving the SHP to a room from which I can no longer hear the fans. I then had an electrician run the connection from my fuse box (in the flat) to this room. I then connected the DPros there using the Infinity cables supplied. Everything works quite well. But yes, the fans in the boxes are reminiscent of a server room in operation.... You can't put that in a flat. If I remember EcoFlow's advertising correctly, the units are also placed outside the door ;-).

I would have liked the same thing, because I regret the misleading advertising by EcoFlow, who present the Delta pro as being installable in a living room (as in their great video), when it's totally impossible unless you live with earplugs all the time. The system is pretty well designed, but it's unusable inside a house, as it's far too noisy once the load exceeds 150w.