I'm very curious how Tesla has all the space in the frunk...the Nissan Leaf looks like an ICE car under the hood! Where is the A/C unit?
The batteries are in the floor and the converter/motor are wrapped around the rear axle.
I think OP wants to know where the air conditioner is. Great question; hadn't thought about it. I guess it's in the area adjacent to the microwave-size opening in the frunk.
The compressor is beneath the frunk floor along with the power steering and brake boost systems.
Some people mentioned a slight rattle of the steering column when A/C compressor is on high duty. From your perspective, is there something structurally connecting those things which could be responsible (and if so, tweakable)?
I read that a wire/duct touches when the AC unit is humming at full power.
Is there a physical touchpoint under the frunk that could be causing this intermittent mystery noise?
Underneath the frunk is pretty busy. There are pics over on TMC. I had a recent Ranger visit and I asked the tech about the A/C noise, but he said there isn't a fix for it. On the other hand he did fix the steering wheel click/pop with a shim.
There is AC noise from the compressor, which can be loud and buzzy (more from outside the car than inside). However there also can be a vibration from the front under the frunk due to coolant lines rattling against other components there. There is a service bulletin on this, so consult with your SC if you have concerns.
@SamoSam: As @hfcolvin says - it is pretty busy under there. There is a metal line from the compressor that runs underneath the steering column and in some cars can rub against it.
I thought that was what was happening to me, but service checked it and it was OK.