Thats great news. I also thought of another idea... You could probably also install a wall-mounted thermostat (not too close to the stove) and wire it into (in series) the "on all the time" side of the switch. Then you could switch it on but the blower would only run when the thermostat called for heat in the room. As soon as the required temperature was met, the thermo would shut off the fan.
By "on all the time" side of the switch I mean the following: The switch has 3 positions. the "up" position is called "automatic" and turns the blower on when the stove reaches a certain temp (not adjustable) Problem is once the stove gets hot (especially with a load of coal) the blower never shuts off because the stove temp is always above the threshold temp. The "middle" position is off (self explanitory) The "down" position is blower "on all the time"...it doesn't matter, the stove can be red hot or ice cold or whatever. If a room thermostat was wired into this side of the swith, then the fan would kick on when the room was cold and the fan would shut off when the room reached warm temp.