Hi Jason,

can't help with the regs but I did something similar for my workroom,
using a PIC, thermistor and relay, with a couple of degrees hysterisis.

With a bit of common sense and attention to robustness you shouldn't
have any problems. For example over-speccing the relay contacts. If
you really wanted to be kind to them, include zero-crossing detection
and dimming so that the contacts close with a settable minimal load,
rather than the occassional full power load with random switching.
Although arcing with AC does tend to be not as bad as switching DC

What made the biggest difference I found was to use a fan heater to
circulate warmth more around floor level, which of course rises and
gives a better distribution and overall evenness. The heat from a plain
bar heater goes more or less straight up to the ceiling, leading to quite
a gradient

Joe
--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.