Ok I tried to find out where the smell is coming from. Still no luck the smell doesnt start until the light gets to max temp. I ran the ac on a different outlet from an outside room and I only have the light, ballast, vortex and oscillating fan on the outlet in the grow space. Could that be too much for the outlet? I'm no electrician but I think that should be ok. I mean this is an old building but the outlet should be able to handle that right?? Its a standard outlet.