100+ Free DE HVAC Practice Questions
Pass your Delaware Master HVACR Contractor License exam on the first try — instant access, no signup required.
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About the DE HVAC Exam
The Delaware Master HVACR exam is an open-book exam covering general knowledge, piping, equipment, system sizing and installation, ventilation and exhaust systems, and testing and inspection. Requires either a journeyman certificate plus 2 years under a master or 7 years experience with the Apprenticeship By-Pass Exam. Contractors must also register with the Division of Revenue.
Questions
100 scored questions
Time Limit
3 hours
Passing Score
75%
Exam Fee
$150-$250 (Delaware Division of Professional Regulation (DPR))
DE HVAC Exam Content Outline
State Laws & Licensing
Delaware DPR regulations, Title 24, continuing education, contractor registration, and business requirements
Trade Knowledge
System sizing, load calculations, equipment selection, refrigerant handling, and duct design
Mechanical Codes
IMC compliance, IECC requirements, gas piping, venting, and combustion air
Safety & Testing
EPA regulations, OSHA safety, testing and inspection procedures, and worker protection
How to Pass the DE HVAC Exam
What You Need to Know
- Passing score: 75%
- Exam length: 100 questions
- Time limit: 3 hours
- Exam fee: $150-$250
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
Frequently Asked Questions
Is the Delaware HVACR exam open-book?
Yes. Approved bound reference materials may be tabbed, highlighted, and used during the exam.
What passing score is required?
Delaware requires 75% to pass the Master HVACR examination.
What are the two pathways to the Master license?
Journeyman certificate + 2 years under a master, or 7 years experience + Apprenticeship By-Pass Exam.