I just went to contract on a house in Long Island NY. House was built circa 1890. Heat is currently an oil boiler in basement single zone hot water. There is separate gas fired water heater manufactured in 1979.
There are radiators (old cast iron) on the first floor and baseboard on the second floor.
I want to insulate of course and replace the boiler with a condensing model coupled to an indirect water heater. The boiler will be direct vented bypassing the chimney.Chimney to be retained for future use(it's already lined).
Is the mix of rads and baseboard a drawback for a condensing boiler?