I used to live in Boston. Near my complex, there was an apartment complex with lots of our friends. Anyways, that place had faulty heating most of the time; mainly in the corridors. They were pretty stuffy.
One thing I'd noticed was that in our complex, static shocks were common but not too strong. Touching the elevator panel never did anything; and getting a doorknob shock was common but the shock was mild. One didn't need to avoid these.
In this other building, on the other hand, the elevator panels (IIRC nearly the same) gave shocks that hurt, and so did the doorknobs. I used to use my sleeve to touch things; and I'd be very wary of them.
The two complexes were nearly identical except for shape and the fact that one of them had faulty heating.
My question is, is there a correlation between faulty heating and buildup of static? A heat difference between the corridors and the inside room could generate a thermo emf in the doorknob (as well as in the elevator panel as a cooler shaft is on the other side). But, a thermo emf won't really build up static electricity, would it?