Hey good morning,
I am currently a journeyman and my license covers plumbing, heating and cooling. I also have my universal refrigerant license so my question is what other licenses are needed in the state of Pa besides my masters but i have to wait to take that yet. Do you need a special license for working on big boilers? I know if you want to be a welder on boilers you need an "S" stamp i think but i don't want to be involved in that. Any input would be great thanks.