NHIE Plumbing practice questions

10 questions · Untimed · Explanation after each question

Supply piping and pressure, cross-connections, fixtures and anti-scald valves, drains, traps and vents, water heaters and relief valves, fuel gas and oil piping, and sump and ejector pumps. Plumbing and Fuel Distribution Systems is 6% of the National Home Inspector Exam, about 10 of the 175 scored questions.

Line drawing of a tank water heater with a relief valve and discharge pipe ending near the floor, an expansion tank, a gas shutoff with sediment trap and a floor drain

Before you start

Every question has four options and one correct answer. Each explanation says why the answer is right and why the most tempting wrong answer is wrong.
Check each answer to see the explanation before moving on. Checked answers cannot be changed.

Original practice questions written to the EBPHI National Home Inspector Examination content outline (© 2023), not EBPHI exam questions. Independent practice, not affiliated with or endorsed by the Examination Board of Professional Home Inspectors (EBPHI) or PSI. National Home Inspector Examination and NHIE are registered marks of EBPHI.