Please add some details. Why would you care about the wattage? .
A gas furnace is typically listed for around 7.3 amps, which would calculate out to around 900 watts maximum load.
There is next to no inrush current I'd have to open one up and actually look at motor FLA ratings to be able to calculate it. It's one of those cases; where it's never been a big enough deal to actually figure out the exact load.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.