I have been wanting a wood furnace for some time now and I am close to saving enough. From what I gather Boilers are a more efficient way to go but a lot more expensive. Am I right in saying this. I was just reading an active new thread on this forum where someone said that people but water coils in there duct work ( I have existing duct work ) to heat there house. That caught my attention. I was just wondering is the price still a huge difference between a Furnace and a Boiler. I have no existing chimney and would need to instal that to. I am Gusstamating that i am into a triple wall chimney for about 2200.00 and a furnace for about 3800 - 4200 depending on the model...