NewPlumbing Apprenticeship New England Air SystemsPlumbing ApprenticeshipSt. Johnsbury, VTDuties/Responsibilities: Plans, prepares, installs, and maintains piping and plumbing systems composed of various materials; systems may include pipes, pressure and vacuum gauges, pipeline filters, steam traps, and strainer valves. About our apprenticeship program: Our apprenticeship program takes 4 years to complete with a combination of 8,000 hours of on-the-job training and classes that will teach you about the basics of the plumbing trade.