Thanks for all the replies! They are great!
OK, From what I read I will:
1) Have the switch within a foot on the crawlspace entrance, which is a bulkhead and the only entrance to the furnace area (code)
(outside the entrance would truly be outside the house)
2) Check to make sure there is a service switch on/near the furnace.
Also to keep the Gal happy:
3) An additional Emergency stop switch on the main floor (reason below)?
Is there anything that says I can't or should not have multiple stop switches??
My Gal is concerned that she will not be able to get to the switch in the crawlspace when the snow is piled upon the bulkhead, the only access to the crawlspace, and furnace. (even after has it being explained that she has an easily access switch in the circuit panel on the main floor that would serve the purpose of shutting the furnace off, the furnace is the only thing on the circuit, which I think is the way it should be).
So, to keep the Hard working, rather shop at Home Depot than a clothes store gal happy... (you should be jealous) I am considering having the additional emergency stop switch. If it was my house, I would not bother...
I guess this would also be an excellent time to replace the only 2 wire (no ground) fabric wire left in the house for the furnace (don't even get me started about the wiring! OMG! It was a disaster waiting to happen! One small example: A 3 way switch with a 2 wire (with ground) wire to it..... Yes, the ground wire was being used for power