Everything you need for the M3 Mechanical Plans Examiner exam — based on the 2021 International Mechanical Code® (IMC)
6-hour structured review covering Exhaust and Ventilation Systems, Appliances and Equipment, Combustion Air, and more — weighted to match M3 exam percentages
Timed 50-question simulation matching the M3 exam format with detailed answer explanations
Digital flip-cards for key terms, code sections, and references from the 2021 International Mechanical Code® (IMC)
Listen-and-learn audio covering high-yield M3 topics for studying on the go
Color-coded tab system for the 2021 International Mechanical Code® (IMC) — find answers fast during your open-book exam
Insert sheets with key tables, formulas, and values from the 2021 International Mechanical Code® (IMC) for blank code book pages
6-8 week structured program prioritized by M3 category weights — heaviest topics first
Intensive pre-exam review focusing on the highest-weighted M3 topics: Exhaust and Ventilation Systems, Appliances and Equipment, Combustion Air
Our study materials cover every category tested
Get a head start on your M3 Mechanical Plans Examiner exam preparation with this preview of our comprehensive study guide. Sign up for full access to all study materials.
| Category | Percentage | Questions |
|---|---|---|
| General Administration | 18% | 9 |
| Heating/Cooling Equipment | 16% | 8 |
| Exhaust and Ventilation | 20% | 10 |
| Duct Systems | 16% | 8 |
| Combustion Air and Venting | 18% | 9 |
| Fuel Supply Systems | 12% | 6 |
As a mechanical plans examiner, you must verify that submitted construction documents comply with the IMC and IFGC. Your role includes:
IMC 101.2 Scope: The IMC applies to the installation, alterations, repairs and replacement of mechanical systems, including equipment, appliances, fixtures, fittings and appurtenances.
IMC 106.3 Information on Construction Documents:
Construction documents shall show:
IMC 106.4.3 Load Calculations: Heating and cooling loads shall be computed per approved methods. Common standards include ACCA Manual J.
Exemptions from permits (IMC 106.2):
Work requiring permits:
Plans examiners must recognize when specific standards apply:
Location Restrictions (IMC 303):
Clearances (IMC 304):
Equipment Access (IMC 306):
IMC 312.1: Heating equipment shall be sized per approved heating load calculations.
Plans Review Check:
IMC 403.1: Cooling equipment shall be sized per approved cooling load calculations.
IMC 403.3 Condensate Disposal:
Plans Review Items:
IMC 301.3: Mechanical appliances shall be listed and labeled for intended application.
Look for:
IMC 401.2: Every occupied space shall be ventilated by natural or mechanical means.
IMC 403.3: Mechanical ventilation shall provide outdoor air per IMC 403.3.1 (residential) or IMC 403.3.2 (other than residential).
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Created by Levi Mittag — a Certified Building Official, Field Inspection Supervisor, and Lean Six Sigma Black Belt with 19 ICC certifications and 26 years in the building industry.
7 days free, then $12/mo. All 27 exams included. No credit card required.
Not just practice questions — a complete study system with audio, tabbing, and strategy.
Built by an active supervisor who uses these methods to train his own inspection team.