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100+ Free NM Mechanical Inspector Practice Questions

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2026 Statistics

Key Facts: NM Mechanical Inspector Exam

75%

Passing Score

PSI NM Contractor Bulletin 4/3/2026

50 Q

Official Exam Questions

PSI NM Contractor Bulletin 4/3/2026

125 min

Time Allowed

PSI NM Contractor Bulletin 4/3/2026

USD 68.88

PSI Exam Fee

PSI NM Contractor Bulletin 4/3/2026

NM CID Mechanical Inspector is a 50-question PSI exam, 75% pass, 125 minutes, USD 68.88, open-book UMC/UPC and NMAC mechanical/plumbing codes (bulletin 4/3/2026).

Sample NM Mechanical Inspector Practice Questions

Try these sample questions to test your NM Mechanical Inspector exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A New Mexico CID mechanical inspector is asked which document is the official title of the statewide mechanical code adopted in 14.9.2 NMAC. What is the correct title?
A.2021 New Mexico Mechanical Code (NMMC)
B.2015 Uniform Mechanical Code without state amendments
C.2021 International Mechanical Code as published by ICC
D.New Mexico Fuel Gas Code, 14.8.2 NMAC
Explanation: 14.9.2.9 NMAC deletes UMC 101.1 and substitutes that the code shall be known as 14.9.2 NMAC, the 2021 New Mexico Mechanical Code (NMMC). 14.9.2.8 NMAC adopts the 2021 Uniform Mechanical Code only as amended by that rule. An inspector cites the NMMC, not a bare model code or the IMC.
2Which model code does 14.9.2 NMAC adopt by reference as the technical base of the New Mexico Mechanical Code?
A.2021 International Mechanical Code (IMC)
B.2021 International Fuel Gas Code (IFGC)
C.2021 Uniform Mechanical Code (UMC), as amended by 14.9.2 NMAC
D.2018 Uniform Mechanical Code with no New Mexico amendments
Explanation: 14.9.2.8 NMAC states that the rule adopts by reference the 2021 UMC, as amended by 14.9.2 NMAC, and numbers its provisions to correspond with the 2021 UMC. Inspector questions on the PSI exam are written to the NMMC/UMC 2021 pair, not the IMC or IFGC.
3Under 14.9.2.10 NMAC, who is the authority having jurisdiction (AHJ) for adoption, interpretation, and enforcement of the New Mexico Mechanical Code as the statewide minimum?
A.The CID and the mechanical-plumbing trade bureau chief
B.The local fire marshal only
C.The IAPMO board of directors
D.The serving natural-gas utility
Explanation: 14.9.2.10 NMAC deletes the UMC definition of authority having jurisdiction and substitutes that the AHJ is the Construction Industries Division and the mechanical-plumbing trade bureau chief. That statewide minimum applies even where a local jurisdiction performs inspections.
4A contractor asks a CID mechanical inspector which New Mexico rule governs when a mechanical permit is required. Which citation is correct?
A.14.5.2 NMAC, Permits
B.UMC Section 104.1 as printed, without state substitution
C.14.5.5 NMAC, Fees, only
D.14.9.2.28 NMAC, Appendices
Explanation: 14.9.2.9 NMAC deletes UMC 104.1 (permits required), 104.3, 104.4, and 104.5 and points the inspector to 14.5.2 NMAC for permit rules and 14.5.5 NMAC for fees. An inspector who quotes the unamended UMC permit chapter is using the wrong New Mexico source.
5Per 14.5.3.9 NMAC, which inspections are required for work subject to the New Mexico Mechanical Code?
A.Only a final inspection after occupancy
B.A framing inspection and a roof-nail inspection
C.Rough inspection before concealment, temporary heat if applicable, final after appliances are attached, and inspection of replacement-equipment operation
D.Only a gas-pressure test witnessed by the serving utility
Explanation: 14.5.3.9(D) NMAC requires a rough inspection of all mechanical work after installation and before concealment, a temporary-heat inspection if applicable, a final after the work is covered and fixtures and appliances are attached, and inspection of the operation of replacement mechanical equipment. CID inspectors schedule those stages, not a single occupancy walk-through.
6A permit holder covers a gas-pipe and duct rough-in and then calls for inspection the same morning. Which 14.5.3 NMAC rules has the permittee violated?
A.Notification must be given not less than 24 hours before inspection, and work shall not be covered before the inspector approves it
B.None; same-day concealment is allowed if the contractor is licensed
C.Only the 24-hour notice rule; covering work before approval is allowed
D.Only a fee rule in 14.5.5 NMAC
Explanation: 14.5.3.8(D) NMAC requires the permittee to notify the AHJ when work is ready and, in no event, less than 24 hours before the inspection. 14.5.3.8(F) NMAC requires work to remain visible and forbids covering or using it before inspector approval; covered work may be ordered uncovered. Both notice and concealment rules apply.
7A gas utility is ready to set a meter on a new mechanical installation. Under 14.5.3.15 NMAC, when may the mechanical system be connected to the fuel source?
A.After the AHJ or appropriate inspector has given approval to connect or reconnect
B.As soon as the contractor completes the piping, without CID approval
C.Only after a certificate of occupancy is issued for the entire building
D.Whenever the utility’s own leak test is complete, regardless of CID
Explanation: 14.5.3.15(B) NMAC states that no person shall connect or reconnect any mechanical system or equipment to an energy, fuel, or other power source until the AHJ or appropriate inspector has given approval. An inspector does not allow a meter set or fuel connection on an unapproved mechanical system.
8Which condition authorizes a CID inspector, after verification as required, to issue a stop-work order under 14.5.3.10 NMAC?
A.The project is behind the contractor’s advertised schedule
B.The owner has not paid the contractor’s latest invoice
C.Work is not properly permitted, or the contractor is not properly licensed
D.The design professional has not visited the site that week
Explanation: 14.5.3.10 NMAC lists stop-work grounds that include a health or safety hazard, uncorrected correction notices, deviation from approved plans, a contractor who is not properly licensed, work beyond the license scope, work that is not properly permitted, and improper journeyman ratios. Schedule and billing disputes are not CID stop-work grounds.
9A floor-mounted gas furnace with a listed flammable-vapor-ignition-resistant (FVIR) rating is installed in a residential garage with its ignition source 6 inches above the floor. How should a New Mexico CID mechanical inspector treat the installation under 14.9.2.11 NMAC?
A.Approve it because UMC 305.1 still allows the FVIR exception in New Mexico
B.Approve it if the garage has a floor drain
C.Reject it; New Mexico deletes the UMC text “unless listed as a flammable vapor ignition resistant,” so the ignition source must still be elevated
D.Approve it because garage elevation rules apply only to water heaters
Explanation: 14.9.2.11 NMAC amends UMC 305.1 by deleting the phrase “unless listed as a flammable vapor ignition resistant.” In New Mexico the garage ignition-source elevation rule is not waived by an FVIR listing. A 6-inch ignition height is a fail even on a listed FVIR furnace.
10If a provision of the adopted UMC appears to conflict with another New Mexico construction code, where does 14.9.2.9 NMAC send the inspector?
A.Subsection H of Section 60-13-44 NMSA 1978 and 14.5.1.9 NMAC
B.Always follow the UMC because it is the later model code
C.The serving utility’s installation manual
D.IAPMO’s unofficial code-interpretation hotline
Explanation: 14.9.2.9 NMAC deletes UMC 102.1 and directs code-conflict questions to Subsection H of Section 60-13-44 NMSA 1978 and 14.5.1.9 NMAC. Inspectors resolve conflicts through the Construction Industries Licensing Act and CID general provisions, not by picking a favorite model-code book.

About the NM Mechanical Inspector Exam

The New Mexico CID Mechanical Inspector Examination is the open-book PSI inspector exam covering the New Mexico Mechanical Code (NMAC 14.9.2, 2015), Uniform Mechanical Code 2021, New Mexico Plumbing Code (NMAC 14.8.2, 2015), and Uniform Plumbing Code 2021. The official exam has 50 scored questions, a 75% passing standard (38 points), and 125 minutes allowed. PSI lists the fee at USD 68.88 (bulletin updated 4/3/2026). This English-language MCQ bank is a study aid, not an official PSI form.

Questions

50 scored questions

Time Limit

125 minutes

Passing Score

75% (38 of 50 points)

Exam Fee

USD 68.88 (PSI Services LLC (for New Mexico Construction Industries Division))

NM Mechanical Inspector Exam Content Outline

12%

General Knowledge

Mechanical inspector general knowledge (6 items)

20%

Piping - Refrigeration, Gas, Hydronic

Refrigeration, fuel-gas, and hydronic piping (10 items)

4%

Gas Sizing

Fuel-gas pipe sizing (2 items)

8%

Controls and Testing

Controls, testing, and inspection (4 items)

20%

Appliances - Heating and Cooling

Heating and cooling appliances (10 items)

10%

Combustion Air

Combustion-air requirements (5 items)

14%

Chimneys, Flues and Vents

Chimneys, flues, and vents (7 items)

12%

Ducts

Duct construction and inspection (6 items)

How to Pass the NM Mechanical Inspector Exam

What You Need to Know

  • Passing score: 75% (38 of 50 points)
  • Exam length: 50 questions
  • Time limit: 125 minutes
  • Exam fee: USD 68.88

Keys to Passing

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

NM Mechanical Inspector Study Tips from Top Performers

1Practice gas-pipe sizing and combustion-air calculations from the approved UMC/UPC editions
2Tab appliance, venting, and duct chapters before test day
3This bank is an English-language MCQ study aid, not an official PSI inspector form

Frequently Asked Questions

How many questions are on the NM Mechanical Inspector exam?

The official PSI examination has 50 scored questions. Passing is 75% (38 points) within 125 minutes (bulletin updated 4/3/2026).

What references are allowed?

New Mexico Mechanical Code NMAC 14.9.2 (2015), Uniform Mechanical Code 2021, New Mexico Plumbing Code NMAC 14.8.2 (2015), and Uniform Plumbing Code 2021.