3 vs 4 section bolier

Jim G

I currently have a V33 burnham boiler. I have a hotwater llop on the first floor of the coil and a tap off the bottom of the boiler for a basement that is not used often. I have 2nd fl steam. I am getting a peerless boiler (oil) and one contractor want to install a 3 section the other contractor a 4 section. I live o long island in a 2200 sq ft home. should I get a 3 or 4 section bolier?