Beyond heating, cooling, and electrical services, Seider now offers master plumbing. Do you know to look for the master plumber number designation? You should. Like an MBA in the professional world, it’s the highest designation in the field of plumbing. There are three steps to being a master plumber. Typically, plumbers start as apprentices and then are promoted to journeymen after reaching state-determined years of experience (usually two to five years). Most states including Wisconsin even require plumbers to pass a test to show understanding [...]