Plumber

Why it resists AI

Plumbing is among the least AI-exposed occupations measured. The Yale Budget Lab notes that across competing AI-exposure metrics, plumbers consistently land at the low-exposure end. The methods rarely agree on anything, but they agree on this. The reason is structural: the work is physical, improvisational, and performed inside the unique geometry of someone's house or a half-built building. You are threading pipe through joists, soldering in a tight cabinet, snaking a drain you can't see, and deciding on the spot how to route around an obstruction. None of that is a sequence-prediction problem.

Licensing reinforces the moat. Most states require plumbers to be licensed, and licensing typically demands 2 to 5 years of documented experience plus an exam covering the trade and plumbing code before you can work independently (BLS OOH). Because plumbing failures cause property damage, contamination, and health risk, code enforcement and human accountability are non-negotiable, and slow to delegate to software.

AI helps at the margins (fixture lookups, code references, scheduling, leak-detection sensors) but doesn't crawl under a house. If anything, smart-home water systems add diagnostic work for plumbers who understand them.

What the work is actually like

Plumbers, pipefitters, and steamfitters install and repair the pipe systems that carry water, gas, and waste. Some of that is new construction, but more often it's the existing homes and buildings that constantly need maintenance. A day might be rough-in plumbing on a new build, swapping a water heater, or emergency repairs on a burst line. Pipefitters and steamfitters work on higher-pressure industrial and heating systems.

It's hands-on and sometimes unpleasant: cramped spaces, awkward positions, exposure to weather on outdoor jobs, and the occasional genuinely dirty repair. Lifting and kneeling are constant. Most work full time, and because pipes fail without warning, evening, weekend, and on-call emergency work is part of the job. That's also where premium pay lives.

Pay and earning trajectory

The median annual wage was $62,970 in May 2024. The bottom 10% earned under $40,670 and the top 10% earned more than $105,150 (BLS OOH). Apprentices earn a graduated wage from day one.

Pay rises with license tier (journey to master), specialization (pipefitting, medical gas, backflow, industrial steam), emergency and overtime work, and self-employment. Master plumbers can pursue a contractor's license. In many states that's the gateway to running your own shop, which is where the strongest earners operate.

How to get there from tech

Most plumbers learn through a 4- or 5-year apprenticeship: roughly 2,000 hours of paid on-the-job training per year plus technical instruction in safety, code, blueprint reading, applied math, physics, and chemistry (BLS OOH). You earn while you learn, so out-of-pocket cost can be near zero. A vocational certificate ($5,000 to $12,000) is an optional head start. After the required experience you sit for the state licensing exam.

Realistic timeline from a standing start: about 4 to 5 years to journey license, with master status a few years beyond.

From tech, the transferable skills are systems thinking (a building's plumbing is a network with pressure, flow, and failure modes), diagnostics (isolate the fault, test, verify), spec and blueprint literacy, and methodical troubleshooting. Reading plumbing code is not unlike reading API docs and standards: dense, precise, and unforgiving of guesses.

Honest tradeoffs vs. a tech job

Outlook & demand

BLS projects 4% growth from 2024 to 2034 (about as fast as average), with roughly 44,000 openings each year over the decade (the field held about 504,500 jobs in 2024). Demand is durable rather than explosive. It comes from new construction plus the perpetual need to maintain and repair the plumbing in every existing home and building. Steady and not flashy, but not going away (BLS OOH).