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Master HVAC / Refrigeration with Gas

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Plumbing and Mechanical Systems Board
Iowa Department of Health

321 East 12th Street
Des Moines, IA 50319
Phone: (515) 281-7689
Exam Provider
Kirkwood Community College
6301 Kirkwood Blvd SW
Cedar Rapids, IA  52404
Phone: (319) 398-4482 or (319) 398-5529
Exam Type
Exam Content
Subject Areas% of
HVAC Terms, Principles, Administration & Safety16
HVAC Installation Requirements14
Venting, Ducts, Combustion Air18
Gas Piping8
HVAC Electrical13
Boilers, Exhaust & Fire Protection11
Refrigeration Terms, System Operation20
Total number of test questions:
Time allowed (hours):
Books Allowed in the Exam
International Mechanical Code, 2021, ICC
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Modern Refrigeration and Air Conditioning (textbook), 21st Edition, Althouse, Turnquist, Bowditch & Bracciano
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NFPA 54/ANSI Z223.1: National Fuel Gas Code, 2021, NFPA
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