Chimney Liner, yes or no

DO I NEED A CHIMNEY LINER?
I’m doing an oil to gas conversion on this little ranch house. No basement and has only an attic/craw space. The old boiler is the original from 1949.
I’m putting a furnace in the craw space and a hot water heater in the old boiler room which is in the interior of the house. I’ve gotten conflicting opinions as to the need of putting in a chimney liner for the venting of the hot water heater. The venting of the furnace will be directly vented outside of the roof.

Richard

By rwasl |