Please help! My husband and I just bought a Keystoker Koker Furnace and had all the duct work ran through the house. Before we could havei t tied into the chimney we had to have it swept, thats when we got the news that it has 2 cracked flues. We have been calling around trying to get some answeres on the best way to go, and we have been told so many stories and they are all conflicting. My husband has been trying to reach the actual manufacturer but has only been able to get as far as leaving messages and fax tones. Can some one please tell me the best way, the safest way, and the most cost efficent way to vent this unit? It is installed in our basement. Thanks.