What they do: Learn how to install and service energy-efficient heating and cooling systems that reduce carbon emissions and energy bills.
How to learn: Plumbing apprenticeship (4–5 years) or trade school. State licensing required in Colorado by the State Plumbing Board.
Training time: 2 year (3400 hours) for residential plumber, 4 years (8,500 hours) for master plumber.
Typical cost of training: Apprenticeships usually have little to no tuition cost (many are free, with materials fees under $1,000), and apprentices are paid while they learn; some community college or trade school plumbing certificate programs can cost $1,500–$5,000 total.
Overview of typical job titles and responsibilities.
Entry Level Role: Plumbing Apprentice / Junior Plumber
What they do: Works under supervision. Learns plumbing systems, assists with installations.
Mid Level Role: Journeyman Plumber / Plumber II
What they do: Works independently on standard projects (residential or commercial). Pulls permits (if licensing allows), handles more complex installations or repairs, may supervise apprentices.
Senior Level Role: Master Plumber / Lead Plumber / Plumbing Supervisor / Project Lead
What they do: Oversees large or complex jobs, designs plumbing systems, handles permits and inspections, leads and manages teams, ensures compliance with codes, may run specialty projects or serve in sales/estimating roles, mentor others.