Well after studying the situation for a few years about wood boilers I've come to the conclusion they are not for me.The house is 1400sq., ranch, on a full basement. I have a mod con I would not trade for the world and went with a wood stove for suppemental heating. For me I have the best of both worlds. The house is seven years old and tight. The envelope is by far the most important item in heating . I have the room and storage space(not in the house) for a wood boiler but the money and time for a wood boiler could not be justified. Call me crazy,Love boilers, but a wood fired one sorry. Love watching the fire in the wood stove from the comfort of my recliner.