I have alot of time on my hands with drive time between jobs, so I do alot of random thinking about things in general. I was in an office that every women and some men had a electric heater under their desk to keep warm ( like I want to hear about keeping warm as I head to the roof) in the office space. There has been several fires that I have heard about in the past caused by resistance heaters under desks so what about this idea? Installing low voltage radiant heating panels mounted to the desks or on a mat type surface that the chair sits on with a beveled edge. what-da-ya-think
http://www.warmup.com/us-carbonheater.phtml
http://www.warmup.com/us-carbonheater.phtml