Replacing oil boiler with nat gas boiler. New one will be the traditional cast iron heat exchanger, not high efficiency condensing unit that can be vented through the wall, so still need the chimney. There is a pro installed stainless liner in the chimney.
What needs to be done to clean the chimney liner, in preparation for the conversion to gas use?
Thanks!
What needs to be done to clean the chimney liner, in preparation for the conversion to gas use?
Thanks!