Convert steam radiators from oil to gas
With winter over, I am back thinking about conversion from an oil burner/boiler to natural gas. I have a very old 2-story Victorian house with steam radiators.
I ran into someone I know who did this a few years ago. He also is the plumber on a local team that provides this service as a business. He also has steam radiators like me in an old 2 story house, and said he installed a furnace that has 90+ efficiency with a pipe out the wall (not chimney). This surprised me as I have been told for steam radiators you need to use an oil (gas) burner, not furnace. I asked what brand, he believes it is American Standard.
What is going on - can a more efficient gas furnace (not burner) be installed? I'd been hearing about burners for steam radiators that have about 83% efficiency.