On Wed, 11 Dec 2013 00:26:39 +0000, Danny D'Amico wrote:

There is no furnace switch, that I know of.
The wires come directly into the furnace from the outside.
Of course, I can shut off a breaker ...

I apologize for not having looked far enough into the
mouse-infested recesses of the ductwork to provide the
answer sooner...

There is no power switch; but, there is a power cord,
which is plugged directly into a wall outlet, *behind*
the furnace (and to the side):
http://farm6.staticflickr.com/5477/1...6604d692_o.gif

I made the mistake today of unplugging it, and then
regretted that since I had to get covered in insulation
and mouse poop in order to plug it back in.

Next time, I'll just hit the circuit breaker!