so heres my situation- currently heating my house with a oil fired boiler, and thinking about adding a new yorker wc-130 wood boiler. now a couple questions i have are, i was told maybe to go with the wc-90 to make the boiler work harder to heat the house. ( they said to use a smaller stove so it will burn hotter and cleaner, the larger stove may smolder and create cresote). also i only have one chimney any problem with putting oil and wood into same chimney since im only burning one at a time. and lastly ive read quite abit of posts about people burning coal and having problems with keeping the fires going in these stoves- i plan on wood only and was hoping that its as easy as having a fire in a wood stove. living in vermont where the winters can get to negative 10 on some nights and trying to heat a 3000 square foot home. thanks dave