hi, i will probably buy a drolet eco-65...someone have problem with? it seems that many have had problems with smoke? We have a house with around 2500-3000 ft/s on two floor. We want to reduce the cost of using heating oil...so we would like to connect it to the duct system of our oil furnace: do you think it's possible? the duct have many exit...about...ten. Is it too much? can we use the same chimney that our oil furnace? sorry for my english...I'm a french speaker but i am trying to learn. Thanks !!