What's your current central heating system---FHW or FHA?? Tying into your existing heat delivery system makes sense; and, utilizes your existing investment. Leisure Line's web site has a great block diagram shown here for a FHA solution: http://www.leisurelinestoves.com/1904137.html
If you have an existing FHW boiler system, tying in a stoker coal boiler would be really straight forward too.
Go anthracite coal. You'll be glad you did when your home and family is nice and warm next winter---without taking out a second mortgage!
You'll even find yourself turning the heat UP for a change; because, anthracite coal makes so much $en$e!!