I have a mod to let me change eco footprint on the fly. I had one house where this was not happening and my Sims were getting the positive moodlets from environment as expected. I moved them to a new house and they were getting bad moodlets from env. I moved back, still getting positive. The only difference was that I'd used significantly more green wallpaper and flooring in the former house than I had used in the new one. I also remembered someone here saying that green items tended to make it stop, and some others saying changing neighbourhoods made a house that worked fine suddenly not work anymore.
After some testing I can confidently say that, for me, this is tied to footprint, and the room's footprint score. I changed it to neutral footprint (it was green before), and suddenly the negative moodlets stopped. I changed it back to green, and the negative moodlets came back. Then, I changed the wallpaper to a green one, moodlets stopped. Didn't get positive ones, but I didn't get negative ones either. Then I changed it to a neutral paint and my Sim immediately got the negative one.
I don't know how industrial items would affect it but it's possible that industrial items only "look good" in an industrial district, whereas green is okay in neutral, and green ones, but neutral is only good in neutral. I'd have to fiddle with it some more to see how that works. In the meantime, maybe someone else that also has EL can test the eco-footprint versus room footprint and see if it makes a difference in theirs too?
