it has to be a combination of other factors. the quad should easily heat that amount of space (the 1200 sq. feet you mentioned).
and probably a good deal more if the space is insulated and doesn't have massive infiltration issues.
the principle of a fan blowing cool air along the floor toward the stove is pretty much universally effective.
i have a fan blowing into the stove room from immediately outside in the dining room.
but many use a floor level fan in the far room(s) blowing toward the stove.
i then have a vornado in the living (stove) room room doorway up high and another in the arch between the kitchen and dining room.
the floor fan blows in and displaces the hot air (quite effectively) back out under the doorway. the vornados catch that warm air and relay it to the back bedroom.
when it's not much below freezing, i don't need the floor fan. and we run a variation of speeds and on or off with the vornados.
we actually have pretty good fine tuning capability over the heat throughout the house.
the principal is the same, a convection loop, but there are many variations used by people depending on their layout and such.
i heat my 925sq. foot home exclusively with the heatilator PS50. it's the budget cousin of the quad, and it has a flat plate "heat exchanger"
the real quads have real heat exchangers, so i would bet money that CB1200 is capable of heating your home given the right conditions.
we've got near to 20 below here this year and have had no problem.
and i even draw some heat off to the basement via a vent. i keep it at a minimum of 45f on even the coldest of nights and run between 45 and 50 degrees.
the only time i run the oil furnace is to keep it ready. a few times a year just to be sure it still works.
insulation and sealing is the first and best bang for the buck measure.
then distribution of the heat.
then if you haven't decided to scrap the whole thing, you may want to look into an outside air kit to supply combustion air directly from outside instead of sucking it in through every leak in the house while at the same time also sucking in air you've already heated
and sending it all up the stack.
the quad OAK isn't the cheapest one out there. and it also needs a 90 degree connection inside the stove to the inlet.
some folks may mistakenly just hook the oak hose to the hole in the back of the stove and not finish the connection inside.
that leaves a gap in the air supply path.
it's easily possible to fabricate the little collar the kit comes with and then just use hardware store parts to build the oak. i know one guy who did it w/ a drill and jb weld. which was how i imagined i'd do it.
in the end i just found the best deal i could and went the ebay route.
but these are details you can cover when the time comes.
it took me a while to get my system down just right. and the first winter we didn't have an oak. but we still did ok.
you'll find good advice and experience here as you go.
best wishes for good results and welcome to the forum : )
*oh yeah. most people keep the stove running constantly when it's cold.
once everything is heated up, it takes less to maintain that than it does to warm it up from cold.
the harmans and some other stoves have sophisticated controls that maintain desired heat in several different ways. but with the simple controls on my stove(which is basically the same as the CB1200) i just switch between the three settings as needed.
but once your walls are heated up and all the contents of the house are saturated, it's just a matter of matching the rate of loss of the house.