NHIE Plumbing and Fuel Systems Practice Questions
Domain 1, Task 10 of 13 in the EBPHI content outline · 6% of the exam, about 10 of the 175 scored questions
200 questions across all fifteen sections in 4 hours, with a score for Plumbing so you know where you stand.
Free Plumbing drillUnder the IRC, where must a water heater's temperature and pressure relief valve discharge pipe end?
Plumbing and Fuel Distribution Systems on the National Home Inspector Exam
Plumbing and fuel distribution systems are Task 10 of Domain 1 and 6% of the National Home Inspector Exam, about 10 of the 175 scored questions. The questions cover the water supply, fixtures, drain, waste and vent piping, water heaters, gas and oil piping and tanks, and sump and sewage ejector pumps.
- Share of the exam
- 6% in the official content outline, about 10 of the 175 scored questions
- Our drill
- 10 questions from 33 Plumbing questions, untimed, an explanation after every answer; one free attempt, unlimited with a pass
What plumbing and fuel distribution systems questions test
- Water supply: piping materials, galvanized and polybutylene pipe, dissimilar metals, pressure and pressure-reducing valves, and cross-connections
- Fixtures and faucets: leaks, loose toilets, anti-scald valves and reversed hot and cold
- Drain, waste and vent: traps and trap seals, vents, slope, joining different pipe materials, and public versus private disposal
- Water heaters: temperature and pressure relief valves and discharge piping, expansion tanks, seismic straps, venting and combustion air
- Fuel gas and oil: shutoffs, sediment traps, support, bonding and leaking tanks; sump and ejector pumps and check valves
Sit the full exam under the real clock
200 questions across all fifteen sections in 4 hours, with a score for Plumbing so you know where you stand.
Free Plumbing drillHow to study it
- Learn the relief valve discharge rules as one list; they are among the most tested plumbing facts.
- Know what a trap does and why S-traps and missing vents siphon it dry.
- Learn the signs of each obsolete pipe material and what to recommend.
- Take the plumbing drill until you score 80% or better.
Common questions
How many plumbing questions are on the NHIE?
Plumbing and fuel distribution systems are 6% of the exam, about 10 of the 175 scored questions.
Are septic systems on the NHIE?
The outline lists the differences between public and private disposal systems under drain, waste and vent systems.
200 questions across all fifteen sections in 4 hours, with a score for Plumbing so you know where you stand.
Free Plumbing drillThe other home inspector exam sections
- Site Conditions
- Exterior Components
- Roof Components
- Structural Components
- Electrical Systems
- Cooling Systems
- Heating Systems
- Insulation, Moisture Management and Ventilation
- Mechanical Exhaust Systems
- Interior Components
- Fireplaces, Fuel-Burning Appliances and Chimneys
- Life Safety Equipment and Systems
- Analysis of Findings and Reporting
- Professional Responsibilities
- Home inspector practice exam (200 questions, 4 hours)
- Mixed drill: all fifteen sections
Sources
- EBPHI: Frequently Asked Questions (questions, time, fee, scoring, retakes)
- EBPHI: Policies, Procedures, Content handbook with the NHIE content outline (© 2023)
- EBPHI: Prepare for the Exam (domains, references, practice quizzes)
- PSI: National Home Inspector Examination candidate bulletin
- EBPHI: State regulations map
- ICC: International Residential Code (IRC) 2021
Original practice questions for exam preparation, 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.