It definitely can be finicky. I had a portable ac that completely killed the power line ethernet connection when it ran. And my current house I have it in i use from where my router is to where my main TV is and it is unreliable even without that AC unit. So it definitely depends on the circumstances.
It definitely can be finicky. I had a portable ac that completely killed the power line ethernet connection when it ran. And my current house I have it in i use from where my router is to where my main TV is and it is unreliable even without that AC unit. So it definitely depends on the circumstances.