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Instant Download International Code Council : M2 Questions & Answers as PDF & Test Engine
- Exam Code: M2
- Exam Name: Commercial Mechanical Inspector
- Updated: Sep 18, 2026
- No. of Questions: 52 Questions and Answers
- Download Limit: Unlimited
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International Code Council M2 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Heating, Cooling & Water Heaters | 18% | - Solar thermal systems - Heat pumps and cooling equipment - Water heaters and storage tanks - HVAC equipment installation and clearance - Boilers and hydronic systems |
| Topic 2: Duct Systems | 12% | - Insulation and sealing - Duct construction and materials - Dampers and access doors - Duct installation and supports |
| Topic 3: Combustion Air | 8% | - Air supply and venting - Combustion air requirements - Confined spaces and equipment rooms |
| Topic 4: Chimneys & Vents | 14% | - Vent systems and connections - Factory-built chimneys and vents - Chimney construction and materials - Clearances and termination requirements |
| Topic 5: Fuel Supply Systems | 10% | - Gas appliances and connections - Pressure regulation and overpressure protection - Fuel gas piping materials and installation - Piping testing and inspection |
| Topic 6: General Administration | 18% | - Plan review and documentation - Permits and inspections - Code authority and enforcement - Manufacturer's instructions and listings |
| Topic 7: Exhaust & Ventilation Systems | 20% | - Hazardous and special exhaust systems - Commercial kitchen exhaust systems - Makeup air systems - Ventilation rates and outdoor air requirements |
International Code Council Commercial Mechanical Inspector Sample Questions:
A low-pressure steam heating boiler is a boiler furnishing a maximum steam pressure of _____ psi.
- A. 15
- B. [option text not fully visible in the material you sent]
- C. 80
- D. [option text not fully visible in the material you sent]
Correct Answer: A 🗳️
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Air mechanically exhausted from a room must be:
- A. filtered.
- B. discharged into the attic.
- C. discharged to the outdoors.
- D. recirculated.
Correct Answer: C 🗳️
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The exhaust outlet for a clothes dryer is required to be equipped with:
- A. a corrosion-resistant screen of 1/4-inch mesh.
- B. an automatically controlled volume damper.
- C. a backdraft damper.
- D. a temperature limit control device that will automatically shut off the system at a temperature of 250°F.
Correct Answer: C 🗳️
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Given: single-wall vent, which serves only one appliance, and has a height of 10 feet.
The maximum horizontal length permitted for a 5-inch diameter vent connector serving this vent is _____ feet.
- A. 10
- B. 9
- C. 7.5
- D. 5
Correct Answer: C 🗳️
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When a furnace is installed in a 66-inch-high attic, the maximum distance from the passageway access to the furnace shall be _____ ft., measured along the centerline of the passageway.
- A. 10
- B. 15
- C. 50
- D. 20
Correct Answer: D 🗳️
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