Michigan (MI) Hydronic Heating, Cooling &
Process Piping – 200-Question Practice
Exam with Answers & Explanations (2026
Edition) PDF
SECTION 1: LICENSING & REGULATORY REQUIREMENTS
Question 1
What is the minimum number of hours of experience required to qualify for the
Michigan Hydronic Heating, Cooling & Process Piping contractor license?
A) 4,000 hours over 2 years
B) 6,000 hours over 3 years
C) 8,000 hours over 4 years
D) 10,000 hours over 5 years
Correct Answer: B
Rationale: The Skilled Trades Regulation Act (Public Act 407 of 2016) requires a
minimum of 3 years of experience (6,000 hours) in the hydronic heating, cooling,
and process piping classification under a licensed mechanical contractor .
Question 2
Which Michigan state code primarily governs the installation of hydronic heating
and cooling systems?
A) Michigan Building Code (MBC)
B) Michigan Mechanical Code (MMC)
C) Michigan Plumbing Code (MPC)
D) Michigan Residential Code (MRC)
,Correct Answer: B
Rationale: The Michigan Mechanical Code regulates the design, installation, and
maintenance of mechanical systems, including hydronic heating and cooling. For
one- and two-family dwellings, provisions are also found in the Michigan
Residential Code .
Question 3
What is the minimum passing score required on the Michigan Hydronic Heating,
Cooling & Process Piping exam?
A) 60%
B) 65%
C) 70%
D) 75%
Correct Answer: C
Rationale: Candidates must receive a score of at least 70% on the exam to pass.
The same 70% standard applies to the Law and Rules portion as well .
Question 4
How many questions are on the Michigan Hydronic Heating, Cooling & Process
Piping exam?
A) 40 questions
B) 45 questions
C) 50 questions (plus possible pilot questions)
D) 60 questions
Correct Answer: C
Rationale: The exam contains 50 multiple-choice questions (with up to 5 additional
pilot questions), with a time limit of 1 hour .
, Question 5
Is the Michigan Hydronic Heating, Cooling & Process Piping exam open book or
closed book?
A) Closed book
B) Open book
C) Semi-open book (specific references only)
D) No references allowed
Correct Answer: B
Rationale: The exam is open book. Candidates may bring approved reference
materials including the Michigan Mechanical Code, Michigan Residential Code,
and ASME B31.3 .
Question 6
Which state agency licenses mechanical contractors in Michigan?
A) Michigan Department of Environment, Great Lakes, and Energy (EGLE)
B) Michigan Department of Licensing and Regulatory Affairs (LARA) — Bureau of
Construction Codes (BCC)
C) Michigan Department of Transportation (MDOT)
D) Michigan Occupational Safety and Health Administration (MIOSHA)
Correct Answer: B
Rationale: The Bureau of Construction Codes within LARA is responsible for
mechanical contractor licensing and examination administration .
Question 7
Which of the following is an official reference material allowed in the exam room
for the Hydronic Heating classification?
A) Any edition of the Michigan Mechanical Code
B) 2021 Michigan Mechanical Code and 2015 Michigan Residential Code
Process Piping – 200-Question Practice
Exam with Answers & Explanations (2026
Edition) PDF
SECTION 1: LICENSING & REGULATORY REQUIREMENTS
Question 1
What is the minimum number of hours of experience required to qualify for the
Michigan Hydronic Heating, Cooling & Process Piping contractor license?
A) 4,000 hours over 2 years
B) 6,000 hours over 3 years
C) 8,000 hours over 4 years
D) 10,000 hours over 5 years
Correct Answer: B
Rationale: The Skilled Trades Regulation Act (Public Act 407 of 2016) requires a
minimum of 3 years of experience (6,000 hours) in the hydronic heating, cooling,
and process piping classification under a licensed mechanical contractor .
Question 2
Which Michigan state code primarily governs the installation of hydronic heating
and cooling systems?
A) Michigan Building Code (MBC)
B) Michigan Mechanical Code (MMC)
C) Michigan Plumbing Code (MPC)
D) Michigan Residential Code (MRC)
,Correct Answer: B
Rationale: The Michigan Mechanical Code regulates the design, installation, and
maintenance of mechanical systems, including hydronic heating and cooling. For
one- and two-family dwellings, provisions are also found in the Michigan
Residential Code .
Question 3
What is the minimum passing score required on the Michigan Hydronic Heating,
Cooling & Process Piping exam?
A) 60%
B) 65%
C) 70%
D) 75%
Correct Answer: C
Rationale: Candidates must receive a score of at least 70% on the exam to pass.
The same 70% standard applies to the Law and Rules portion as well .
Question 4
How many questions are on the Michigan Hydronic Heating, Cooling & Process
Piping exam?
A) 40 questions
B) 45 questions
C) 50 questions (plus possible pilot questions)
D) 60 questions
Correct Answer: C
Rationale: The exam contains 50 multiple-choice questions (with up to 5 additional
pilot questions), with a time limit of 1 hour .
, Question 5
Is the Michigan Hydronic Heating, Cooling & Process Piping exam open book or
closed book?
A) Closed book
B) Open book
C) Semi-open book (specific references only)
D) No references allowed
Correct Answer: B
Rationale: The exam is open book. Candidates may bring approved reference
materials including the Michigan Mechanical Code, Michigan Residential Code,
and ASME B31.3 .
Question 6
Which state agency licenses mechanical contractors in Michigan?
A) Michigan Department of Environment, Great Lakes, and Energy (EGLE)
B) Michigan Department of Licensing and Regulatory Affairs (LARA) — Bureau of
Construction Codes (BCC)
C) Michigan Department of Transportation (MDOT)
D) Michigan Occupational Safety and Health Administration (MIOSHA)
Correct Answer: B
Rationale: The Bureau of Construction Codes within LARA is responsible for
mechanical contractor licensing and examination administration .
Question 7
Which of the following is an official reference material allowed in the exam room
for the Hydronic Heating classification?
A) Any edition of the Michigan Mechanical Code
B) 2021 Michigan Mechanical Code and 2015 Michigan Residential Code
