"Ray" wrote in message
news:f5G%i.81$Jy1.25@trndny02...
For obvious reasons, we are thinking of switching from oil to natural gas
to fire the furnace for our steam radiator system in a six-unit coop
apartment building.

The furnace is fairly new. The question is, would we have to replace the
entire furnace, or could we simply convert the existing one for use with
gas?

Have you done the price comparison to natural gas? It ain't cheap IMO.
Running about $11 - $15 MCF here in the midwest.

-- Paul