Exam Code: M2
Exam Name: Commercial Mechanical Inspector
Certification Provider: International Code Council
Corresponding Certification: Commercial Inspector

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M2

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Updated: Oct 09, 2026

No. of Questions: 52 Questions & Answers with Testing Engine

Download Limit: Unlimited

Choosing Purchase: "Online Test Engine"
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International Code Council M2 Exam Overview:

Certification Vendor:International Code Council
Exam Name:Commercial Mechanical Inspector
Exam Number:M2
Exam Duration:120 minutes
Available Languages:English
Exam Format:Multiple Choice, Open Book
Exam Price:$320 USD
Related Certifications:C5 Commercial Combination Inspector
M5 Mechanical Inspector
M8 Mechanical Code Specialist
Certificate Validity Period:3 years
Real Exam Qty:50
Sample Questions:International Code Council M2 Sample Questions
Exam Way:Online proctored or test center examination
Pre Condition:Construction or inspection experience is recommended but not required.
Official Syllabus URL:https://shop.iccsafe.org/commercial-mechanical-inspector.html

International Code Council M2 Exam Syllabus Topics:

SectionObjectives
Topic 1: Chimneys and Vents- Connectors and Terminations
  • 1. Vent Connectors
  • 2. Termination Requirements
- Vent Systems
  • 1. Chimney Clearances
  • 2. Vent Sizing
Topic 2: Materials and Specifications- Approved Materials
  • 1. Equipment Labeling
  • 2. Installation Standards
Topic 3: General Administration- Code Scope and Administration
  • 1. Definitions
  • 2. Referenced Standards
  • 3. Permits and Inspections
Topic 4: Hydronic Piping and Refrigeration- Refrigeration
  • 1. Safety Controls
  • 2. Refrigerant Piping
- Hydronic Systems
  • 1. Pressure Testing
  • 2. Piping Installation
Topic 5: Combustion Air and Fuel Supply- Fuel Supply Systems
  • 1. Fuel Oil Systems
  • 2. Fuel Gas Piping
- Combustion Air
  • 1. Combustion Air Openings
  • 2. Indoor and Outdoor Air Requirements
Topic 6: Heating and Cooling Systems- Heating Appliances
  • 1. Water Heaters
  • 2. Furnaces
  • 3. Boilers
- Cooling Systems
  • 1. Cooling Appliances
  • 2. Refrigeration Equipment
Topic 7: Duct Systems- Air Distribution
  • 1. Plenums
  • 2. Duct Insulation
- Duct Construction
  • 1. Materials and Installation
  • 2. Dampers and Protection
Topic 8: Ventilation and Exhaust Systems- Commercial Kitchens
  • 1. Grease Ducts
  • 2. Kitchen Exhaust Hoods
- Ventilation
  • 1. Mechanical Ventilation
  • 2. Exhaust Air Systems

International Code Council Commercial Mechanical Inspector Sample Questions:

Question #1

Solid-fuel cooking equipment:

  • A. is permitted to be installed under common canopy-type hoods with other cooking equipment.
  • B. is permitted to be installed under Type II noncanopy-type hoods.
  • C. shall be vented through a separate hood and exhaust system.
  • D. is permitted to be installed under Type II canopy-type hoods.
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

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Question #2

Which of the following is not a required mechanical inspection?

  • A. Final
  • B. Annual system test
  • C. Rough-in
  • D. Underground
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

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Question #3

The optional integral clearance reduction system is designed to meet which NFPA standard?

  • A. 96
  • B. 33
  • C. 72
  • D. 92A
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

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Question #4

The minimum dimension for rectangular air ducts used to supply combustion air for natural draft systems is
_____ inches.

  • A. 2
  • B. 3
  • C. 4
  • D. 6
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

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Question #5

What type of cooking appliance is required to have its own independent hood and exhaust system?

  • A. Medium-duty
  • B. Heavy-duty
  • C. Extra-heavy-duty
  • D. Light-duty
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

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