Exam Name: Commercial Mechanical Inspector
Certification Provider: International Code Council
Corresponding Certification: Commercial Inspector
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Instant Download International Code Council : M2 Questions & Answers as PDF & Test Engine
Updated: Aug 24, 2026
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International Code Council M2 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Fuel Supply Systems | 10% | - Fuel gas piping materials and installation - Pressure regulation and overpressure protection - Gas appliances and connections - Piping testing and inspection |
| General Administration | 18% | - Code authority and enforcement - Manufacturer's instructions and listings - Plan review and documentation - Permits and inspections |
| Heating, Cooling & Water Heaters | 18% | - HVAC equipment installation and clearance - Water heaters and storage tanks - Boilers and hydronic systems - Solar thermal systems - Heat pumps and cooling equipment |
| Exhaust & Ventilation Systems | 20% | - Ventilation rates and outdoor air requirements - Hazardous and special exhaust systems - Makeup air systems - Commercial kitchen exhaust systems |
| Combustion Air | 8% | - Confined spaces and equipment rooms - Combustion air requirements - Air supply and venting |
| Chimneys & Vents | 14% | - Vent systems and connections - Chimney construction and materials - Clearances and termination requirements - Factory-built chimneys and vents |
| Duct Systems | 12% | - Insulation and sealing - Duct construction and materials - Duct installation and supports - Dampers and access doors |
International Code Council Commercial Mechanical Inspector Sample Questions:
1. Horizontal terminations for mechanical draft systems that are adjacent to public walkways shall be located a minimum of _____ feet above grade.
A) 7
B) 10
C) 8
D) 9
2. Supports for hazardous exhaust duct shall be constructed of:
A) fibrous material.
B) material complying with UL 181.
C) plastic.
D) noncombustible material.
3. Exposed solar thermal equipment protected by motor vehicle impact may be installed at what height?
A) 18 inches above finished floor
B) 48 inches above finished floor
C) Directly on finished floor
D) 6 feet above finished floor
4. Given: An industrial water heater boiler has a manufacturer's listing of 18 inches wall clearance. It is installed with a protective wall assembly of 24-gauge sheet metal spaced out 1 inch from the wall.
The reduced installation clearance from the wall for this appliance is _____ inches.
A) [option text not fully visible in the material you sent]
B) [option text not fully visible in the material you sent]
C) 12
D) 18
5. Given: A recirculating industrial direct-fired makeup air heater has a rated input of 200,000 Btu/h .
Ventilation air is supplied by separate mechanical means.
Outside ventilation air shall be provided to supply at least _____ CFM.
A) 400
B) 1250
C) 800
D) 250
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: D | Question # 3 Answer: C | Question # 4 Answer: B | Question # 5 Answer: C |
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