Commercial Mechanical Inspector
Online Training Course

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✓ 90% Pass Rate✓ Pass-Support Guarantee✓ 1-to-1 Expert Coaching✓ 10,000+ Inspectors Certified
Phil Jankovich, PhD, PEwith Phil Jankovich, PhD, PE
Industry Experience:
I have over 10 years of commercial design experience with mechanical systems, including energy analysis, hydraulic distribution, and operational efficiency, all under current code standards.
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Personal Coaching:
Every page on the course has a chat button. Simply click it if you have any questions. I'll reply within 48 hours. Learn more and see actual coaching conversations.
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Flashcard Review System:
The system creates flashcards from missed quiz and practice test questions, then schedules reviews to help you master the difficult concepts.
Time-Tested Course:
I've been running this course since 2021 and have helped many people prepare for the ICC M2 Commercial Mechanical Inspector exam.
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Preferred
Education
Provider
Commercial Mechanical
40 Hours
4.0 CEUs/PDHs

Personal Coaching

Phil Jankovich, PhD, PE
Phil Jankovich, PhD, PE
Commercial Mechanical Course Developer

I created this commercial mechanical course to demystify HVAC and mechanical code inspection. With my engineering background, I break complex systems down into clear, test-ready concepts.

Whether you're new to mechanical inspection or building on existing experience, this course meets you where you are and gets you exam-ready.

I'm here as your personal coach. Check out some real conversations with my students to see how I help break down challenging material.

Real Coaching Conversations

Here's what 1-to-1 coaching looks like with our students

Type B double-wall connector
correct me if I'm wrong, because I misunderstand the statement of "reduced 10% for each ADDITIONAL multiple of the length allowed by table 505.3.2"
If the connector horizontal length is 22.5 feet so the answer is 20 percent If the connector horizontal length is 30 feet so the answer is 30 percent If the connector horizontal length is 37.5 feet so the answer is 40 percent
The question is: "A 5-inch diameter type B double-wall connector is used to connect a Category I appliance to a chimney with multiple appliances connected. How much does the maximum capacity of the vent connector have to be reduced if the connector horizontal length is 15 feet?"
Answer 1: 10 percent Answer 2: 20 percent Answer 3: 30 percent Answer 4: 40 percent
The correct answer is: Answer 1.
My answer was: Answer 2.
Phil Jankovich
Table 504.3.2 already allows for the length listed. For a 5-inch diameter, the maximum horizontal length of a connector is 7.5 feet WITHOUT any reductions. If you exceed the lengths listed in Table 504.3.2, you must reduce the capacity by 10% for each ADDITIONAL length. In the question, the length is 7.5 feet, so your example of 22.5 feet leading to 20 percent reduction, 30 feet is 30%, 37.5 feet to 40%, is correct.
thanks
Opening for largest appliance
One question regarding practice test 2 question 22, why the answer is not B: 22" w and 30" tall?
Or D?
Phil Jankovich
The opening has to be large enough for the largest appliance to be removed. A 22" opening will not allow a 24" diameter hot water heater to get through (unless the water heater is less than 22" tall, I guess, but that would be very unusual). Both appliances could be maneuvered through a 24" x 30" opening. Answer D would be easier, giving you more space to remove the appliances, but C is the minimum.
But how can that furnace to be removed with 24"x30"?
the H is 45"
Phil Jankovich
Both the water heater and the furnace would have to be turned on their sides if the access door is in a wall. If the access door is a ceiling panel, then both appliances could be lowered through the opening.
thx
Airflow for supply diffuser S3 to be balanced
question where do you find the path to the answer it's not listed for balance calculation
Coaching conversation image
The question is: "Using the drawing above, to what airflow should supply diffuser S3 be balanced?"
Answer 1: a. 50 cfm Answer 2: b. 660 cfm Answer 3: c. 835 cfm Answer 4: d. 1250 cfm
The correct answer is: Answer 2.
My answer was: Answer 3.
Phil Jankovich
This question requires some inference, but it is just an example of reading drawings. The image is a snip from a real drawing for a real project. It isn't stated that the CFM is above the tag, but you have to infer from the question that the CFM is listed. So, all you do is find S3 on the drawing, and you'll see the number 660 above the tag. Therefore, you pick answer 2.
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Full Course Includes

120 Day Course Access

120 Day Course Access

Visual Online Curriculum

Visual Online Curriculum

Flashcard Review System

Flashcard Review System

Coaching

Personal Coaching Passing Guarantee

Quizzes and Tests

Targeted Quizzes & Practice Tests

Audio Instruction

Insightful Audio Instruction

Photos, Graphics, and Illustrations

Photos, Graphics, & Illustrations

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Study anywhere — works on all your devices

User Reviews

“
Passed B2, M2, and Also CA's Exams

Good afternoon Chris, thanks for the extra time for that, passed the exam. The questions were right in line with the training received and the practice exams. Passed Commercial Building, and now also Commercial Mechanical. Even though your M2 course was geared towards the international code, I took the CA commercial mechanical exam and passed.

In the practice exams due to CA having some minor changes, answers are slightly different, however the process of reviewing and looking up the answers remains the same. Since you could not just go straight to the sections detailed in the course, it took a bit more referencing the index. On your final practice exam I scored a 40%, however looked up each answer so felt most of that score was more of a reflection of the differences in code. Turned around the next morning and took the CA exam and was done in 90 mins.

John A.

Rocklin, CA
“
Passed both M2 and M3 Exams with Course!

I actually met the two of you (Gabe & Chris) at the EduCode conference in Vegas! I didn't have my business card on me at the time but I work for a building dept. in Delaware. You guys helped me get all of the plumbing certs and now the mechanical certs that ICC offers. I'll be going for electrical next. I'm really glad you guys offer this training, it's hard to come by!

Btw, your practice tests were harder than the ICC mechanical inspector test I took, and about the same level difficulty as the plans examiner test, just to let you know.

I passed the commercial mechanical inspector and plans examiner tests btw, thanks to your program here!

Corey S.

Washington, DC
“
Questions on the exam were similar to the practice tests

Hi Gabe,

I took the International Mechanical Code M2 test this morning and passed!! I am so grateful to you and your company. Your modules were broken down to an understandable level. I really appreciate you giving me extra days to study!! I am still using it to check what answers I might have chosen incorrectly. There were questions on the exam that were very similar to the quiz and Practice tests in the course. Many questions on the two practice tests at the end were much harder than the actual exam, which I believe was a great help.

Three guys from my class for Plumbing Inspector are taking your course for IMC Commercial M2 now. They failed the Exam the first time because they had used a different company. One guy said nothing in the course was on his exam. Funny thing is, "everything" on the exam was taught by you! You actually taught a lot more data and really useful information that will definitely be of use in the future. Sorry for the long email. Can't tell you how happy I am today because of you!!

Patrick D.

Chatham, NJ
“
It's Done!

Phil, I passed!! Thank you so much for your course!!! and your time and help!!!

Yanli W.

Roslyn, NY
“
Passed the M2 Exam!

Today I passed the exam, thanks so much for everything!

Mohammad R.

New York, NY
“
Passed Plans Examiner Too!

I passed the Mechanical Plans Examiner and Commercial Building Inspector tests using your study material. We will see with the plumbing!

Nicole T.

York, SC
See all reviews →

Pricing Options

Commercial Mechanical Icon

COMMERCIAL MECHANICAL

120-Day Access

40 Hours

$449
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COMMERCIAL COMBINATION INSPECTOR

Commercial Building
Commercial Mechanical
Commercial Electrical
Commercial Plumbing

1+ Year Access · 185 Hours

$1,499
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*Our course does not include the required books. You can purchase the books directly from ICC, or from Amazon or eBay.
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Course Summary

Online Training Hours40 Hours
CEU/PDH4.0 Units
Access Time120 Days
AccessibilityAnytime, Anywhere (not instructor-dependent)
PlatformVisual Online Curriculum
CoachingChat Messaging
AssessmentsQuizzes/Practice Tests
Audio InstructionYes
Code InstructionYes

Course Breakdown

Commercial Mechanical Icon

Commercial Mechanical Inspection Code Test

40 hours of training | 120 days access

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Course Features

Topics

  • IMC & IFGC Scope & Navigation
  • Water Heaters & Boilers
  • Ventilation & Exhaust Systems
  • Duct Construction, Dampers
  • Fuel Burning Systems
  • Venting, Connections, & Compliance
  • Heating Appliances
  • Fuel Gas Piping System & Connections
  • Test-Taking Preparation
  • Simulated Timed Tests
  • Mechanical Terminology
  • Heating, Cooling, Refrigeration
  • Exhaust & Ventilation
  • Ducts & Plenums
  • Combustion Air
  • Chimneys & Vents
  • Hydronic Piping
  • Fuel Supply
  • PRONTO Testing
  • Testing Strategies
Light Bulb Study Tip

Study Tip

The test is a single, multiple-choice test. The ICC exam code is M2 and the test covers the International Mechanical Code and the International Fuel Gas Code. You will have 2 hours to complete 50 code questions. The test is open-book.

Required References

The books are NOT included.
IMC (2021)

IMC (2021)

International Mechanical Code

IMC Turbo Tabs

IMC Turbo Tabs

International Mechanical Code Turbo Tabs

IFGC (2021)

IFGC (2021)

International Fuel Gas Code & Tab Combo

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