Got a couple of questions for anyone who knows a thing or two about furnaces. Say you had a basement forced air furnace which currently burns heating oil. You have a fair-sized woodlot on the property and want to convert the furnace to burn wood instead. 1. Is that possible, or would you have to remove the entire furnace system and install a new one intended to burn wood? 2. What are the costs of such a thing (removal and new installation or converting)? I'm not asking firm exact figures, any general ballpark would be great. Is it a simple thorough cleaning and new grate, or a moderately bigger job which costs moderately more? $800? $1800? $4800? Thanks!