100+ Free MD HVAC Practice Questions
Pass your Maryland HVACR Contractor License exam on the first try — instant access, no signup required.
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Key Facts: MD HVAC Exam
70%
Passing Score
MD HVACR Board
100 Q / 4 hrs
Master Exam Format
PSI Testing
$400K
Min Combined Insurance
MD HVACR Board
6 Categories
HVACR Work Categories
MD HVACR Board
100 Q
Practice Questions Available
OpenExamPrep
About the MD HVAC Exam
The Maryland HVACR licensing exam tests knowledge of electrical systems, motors and controls, piping, refrigeration, air conditioning, heating systems, air distribution, and safety. License types include Master, Master Restricted, Limited, Journeyman, and Journeyman Restricted across six HVACR work categories.
Questions
100 scored questions
Time Limit
4 hours
Passing Score
70%
Exam Fee
$150 (exam) + $20-$75 (license) (Maryland Board of HVACR Contractors (PSI testing))
MD HVAC Exam Content Outline
State Laws & Licensing
Maryland HVACR Board regulations, license types (Master, Restricted, Limited, Journeyman), insurance, and permit requirements
Heating Systems
Gas furnaces, boilers, hydronic heating, heat pumps, combustion analysis, and venting
Refrigeration & Air Conditioning
Refrigeration cycle, charging, recovery, compressors, metering devices, and diagnostics
Air Distribution & Ductwork
Duct design, zoning, airflow measurement, static pressure, and balancing
Safety & Business
OSHA, gas safety, electrical safety, business management, contracts, and insurance
How to Pass the MD HVAC Exam
What You Need to Know
- Passing score: 70%
- Exam length: 100 questions
- Time limit: 4 hours
- Exam fee: $150 (exam) + $20-$75 (license)
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
MD HVAC Study Tips from Top Performers
Frequently Asked Questions
What license types does Maryland offer for HVACR work?
Maryland offers five license types: Master (all categories), Master Restricted (specific categories), Limited (maintenance and repair only), Journeyman (work under a contractor), and Journeyman Restricted (specific categories under a contractor).
What are the six HVACR work categories in Maryland?
Air Conditioning, Full Heating, Forced Air Heating, Hydronic Heating, Refrigeration, and Ventilation. Your license specifies which categories you are authorized to work in.
How do I qualify for a Maryland Master HVACR license?
You must have been a licensed Journeyman for at least 3 years, worked a minimum of 1,875 hours in the year prior to application, and pass the PSI Master exam (100 questions, 240 minutes, 70% passing score).
What insurance is required for Maryland HVACR contractors?
All contractor-level licenses require $300,000 general liability and $100,000 property damage liability (combined minimum $400,000). The HVACR Board must be named as certificate holder.