How to Pass the UA Pipefitter and HVAC Apprenticeship Test (2026 Guide)

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Pipefitters and HVAC service techs who come up through a United Association apprenticeship finish with a journeyman card, roughly 10,000 hours in the field, and no student debt. At each local this guide cites, the aptitude test is the first part of the screening process.

Some locals test pipefitter, steamfitter and HVAC/R applicants together, and some include plumber applicants too: Local 396 runs one exam for pipefitter, plumber and HVACR applicants. Ask your local which exam you will sit. If you are applying to a plumbing apprenticeship, see our UA plumber aptitude test guide.

This guide covers which test your local uses, the skill areas these tests cover, how passing and ranking work, and how to prepare, with four practice questions and worked answers, including a rolling offset. Wages vary by local and market. Check current rates in your state for pipefitters or HVAC technicians.

Which test you will take

Testing procedures vary by local. Call your local's training center and ask what you are actually sitting for before you spend money on prep. Some locals test through GAN Human Resources, as Pipe Fitters Local 597 does. Others give their own exam, as Local 447 does, or tests given by the state, which Local 396 says may be part of its process. Each local decides which test you sit for, what threshold it sets, and whether pipefitter, plumber, and HVACR applicants test together or separately. If your local tests through GAN, it sells its own materials on its site: a $20 study guide and a $30 set of practice problems.

These locals' own pages, checked October 26, 2026, show how far the process varies:

• →UA Local 396, Boardman, Ohio: one combined exam for pipefitter, plumber and HVACR applicants, on April 9, 2027, for applications made September 1, 2026 to March 26, 2027. 75 percent moves you on to the interview. (Local 396's apprenticeship page)
• →UA Local 447, Sacramento: the local's own math exam, about three hours, through first-year algebra, with a 65 percent passing score. A DD-214 showing an honorable discharge exempts you from it. (Local 447's entrance exam page)
• →Pipe Fitters Local 597, Mokena, Illinois (Chicago area): the test is given by GAN Human Resources and has five sections: numerical reasoning, numerical comprehension, spatial reasoning, reading, and Bennett Mechanical Aptitude. (Local 597's testing page)
• →UA Local 343, Vacaville, California: a two-part written exam, math (numerical ability) and mechanical aptitude, with a 70 percent passing score, then an interview with the apprenticeship committee. (Local 343's training page)

Passing score versus ranking

Passing thresholds are set by the local, not by the UA. UA Local 396 in Boardman, Ohio, publishes 75 percent for its 2026–27 cycle, and 396 is one of the locals that runs a single combined exam covering pipefitter, plumber, and HVACR applicants, with specialization coming after entry rather than at the test. Check your local's own posting rather than a figure you read somewhere general.

Clearing the threshold does not get you in. At Local 396 and Local 343 it gets you an interview; at Local 447 it qualifies you to look for your first job with a signatory employer. Where a local scores the interview and combines it with the test, the total sets your position on the ranked list, so a few points on the test can matter.

Skill areas these tests cover

Sections differ by local. Local 597's GAN test, for example, has five sections: numerical reasoning, numerical comprehension, spatial reasoning, reading, and Bennett Mechanical Aptitude. Local 343's has two: math and mechanical aptitude. Find out which your local uses, and whether it allows a calculator; prepare as if it does not.

Math

Every local here that lists its sections includes math: expect fractions, decimals, unit conversions and measurement, and at Local 447, algebra. The difficulty is the format: working by hand against a running clock. Fitting work is full of fractional dimensions and offset calculations, and the test is checking whether you can handle that arithmetic without reaching for a phone. If yours is rusty, Khan Academy's arithmetic material is free and covers all of it.

Mechanical ability

Where a test has a mechanical section, as Local 343's and Local 597's do, it tests applied physics: gears, levers, pulleys, pressure, and how systems behave under load. It maps directly to the daily work of fitting and HVAC service, and applicants who have turned wrenches on cars or equipment tend to have an edge. Everyone else builds it through practice.

Figure visualization

Where a test has a spatial section, as Pipe Fitters Local 597's does, you may see flat patterns and have to determine what three-dimensional shape they fold into, plus questions about how objects relate in space. It is the section that maps most directly to reading isometric drawings and routing pipe through a structure.

Reading comprehension

Where a test has a reading section, as Local 597's does, you read passages and pull specific information out of them.

How to prepare

Content review is not the same as preparation. You can understand how to calculate a rolling offset and still run out of time on the test because you have never done it under a clock. The applicants who score well have already sat through the format before test day. JobTestPrep sells timed practice tests for pipefitter apprenticeship aptitude tests, with explanations for every question.

If your local publishes sample questions, as Local 447 and Local 343 do, work those first.

Practice questions

These practice items were written by TradePathHub to match the skill areas above. They are not actual test questions and are not taken from any test. Work them by hand, without a calculator, then open the answer under each one.

Practice question

A flat pattern of six squares is laid out as a column of four, numbered 1 to 4 from top to bottom, with square 5 attached to the left side of square 2 and square 6 attached to the right side of square 2. When it is folded into a cube, which square is opposite square 2? Which is opposite square 5?

Show answer and explanation

Answer: Square 4 is opposite square 2; square 6 is opposite square 5.

Fold the long column first, then the two side flaps.

1. Roll the column of four into a loop. Squares 1, 2, 3 and 4 become four sides around the cube, and in a loop of four, every other square faces its opposite: 1 is opposite 3, and 2 is opposite 4.
2. That loop leaves two open ends. Squares 5 and 6 fold up from opposite edges of square 2 to close them, so they end up facing each other: 5 is opposite 6.

A quick rule for these: in a straight row of squares, two squares with exactly one square between them always end up opposite each other.

Answer verified October 2026

The interview

Applicants can test well and still not get the job because they walk into the panel unprepared. The people across the table run the program and are gauging whether you will show up, stay, and finish. Be able to say why you are interested in this career path specifically, what the work involves day to day, and how you plan to hold down full-time hours plus night classes for five years.

Applying

Application windows vary widely by local. Some accept applications year-round, others open a narrow window once or twice a year, and a few cap how many applications they distribute. Local 396, for example, takes applications from September 1, 2026 to March 26, 2027. Expect to need a high school diploma or GED with transcripts, a photo ID and, before indenture, a passing drug screen. Some locals charge an application or testing fee. Veterans should ask about exam waivers: Local 447 does not require its exam with a DD-214 showing an honorable discharge. Have your documents assembled before the window opens.