My boiler has a tag saying 112,000 BTU output rating. How might I
determine if that is enough to add a second zone? IIRC, the original
boiler was rated as 92,000 BTU.

Presently, there is a single series loop zone for the main floor in a
ranch style house on Long Island, NY. I am thinking more seriously
about finishing off the basement with a second zone heating loop. The
basement walls are poured concrete with about two feet above outside
grading.


Thanks.