I have a two year Buderus 155 boiler with a Riello burner, and as seems to be the new fad, I am looking to change the oil burner to gas, specifically a Riello Series 40 FS head. I have gotten a lot of miss-information from HVAC guys with limited experience with the boiler, the Riello head, converting or all of the above. I know the boiler is a high efficiency unit, relatively new, used only for heat as I have a gas fired hot water unit, and had the chimney lined at the time. I am looking to find someone familiar with what I am intending to do, the equipment that I have and give me the straight story on the pros/cons of the conversion.

Any takers?