Please remember that I am an electrician, so don't use big words/technical phrases or else I am going to have the "deer in the headlights" look.

Yesterday, I replaced a broken First Stage sequencer and two burnt jumper wires on a customer's electric furnace. He has problems with excessive humidity in his basement and he asked me why he required a humidifier on his furnace.
I told him that I would find the correct answer and get back to him.

For us ignorant wire-jockeys, why would an electric forced-air furnace require a humidifier? I thought that typically only gas furnaces would dry out the air enough to need to add humidity back in the air.

His next question was whether I can install a Programmable T-stat that will combine his humidistat & t-stat. Has anyone ever installed one before and where do you purchase it?