Delaware Master HVACR Exam - Online Practice Questions

Prepare for the Delaware Master HVACR examination with online practice questions designed to reinforce heating, ventilation, air conditioning, refrigeration, gas piping, equipment, system sizing, ductwork, boilers, testing, inspection, and other technical subjects expected at the Master HVACR level.

This online practice-question product includes 3 months access, giving candidates time to work through HVACR problems, revisit difficult subjects, strengthen code-navigation skills, practice load and airflow concepts, and build a consistent study routine before the official licensing examination.

The Delaware Master HVACR license is administered through the Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners. A Master HVACR may design, install, construct, maintain, service, repair, alter, or modify heating, air conditioning, refrigeration, ventilation, process cooling or heating systems, including associated gas piping.

The current Delaware Master HVACR examination contains 100 questions. The examination is timed and is administered by ProV after the candidate receives approval from the Delaware Board. Delaware requires a minimum score of 70% to pass its Plumbing and HVACR licensure examinations.

The exam covers General Knowledge, Piping, Equipment, System Sizing and Installation, Ventilation and Exhaust Systems, and Testing and Inspection. Because the examination spans multiple HVACR disciplines, candidates should prepare for questions that require both code knowledge and practical understanding of complete mechanical systems.

The study references associated with this online practice-question product include the International Fuel Gas Code, 2018, International Mechanical Code, 2018, Low Pressure Boilers, 5th Edition, Modern Refrigeration and Air Conditioning, 22nd Edition, a Ductulator, and Residential Load Calculation - Manual J, 8th Edition.

Practice questions can help turn passive reading into active preparation. Instead of simply reviewing code chapters or technical manuals, candidates can work through realistic HVACR situations, identify the system involved, determine the correct method or requirement, and then use the appropriate reference to reinforce the reasoning.

Exam Details

The Delaware Master HVACR examination contains 100 questions. The current ProV examination bulletin lists a testing time of approximately 1.67 hours.

The examination content outline includes:

• General Knowledge: 28 questions
• Piping: 12 questions
• Equipment: 18 questions
• System Sizing and Installation: 18 questions
• Ventilation and Exhaust Systems: 14 questions
• Testing and Inspection: 10 questions

General Knowledge is the largest individual examination category with 28 questions. Candidates should be prepared for broad HVACR principles involving refrigeration, heating, combustion, airflow, controls, system operation, safety, and mechanical fundamentals.

Equipment and System Sizing and Installation each account for 18 questions. These categories require candidates to understand how equipment is selected, installed, connected, and applied within a complete HVACR system.

Ventilation and Exhaust Systems accounts for 14 questions, while Piping accounts for 12 questions and Testing and Inspection accounts for 10 questions.

Delaware requires candidates to achieve at least 70% on the Master HVACR examination. Passing the examination is one part of the licensing process; applicants must also satisfy the Board's applicable experience, application, and certification requirements.

Open Book Test

The Delaware Master HVACR examination is an open-book test.

The current ProV Candidate Information Bulletin identifies approved references that may be used during testing. Candidates should follow the most recent examination bulletin for the exact permitted-book rules, editions, tabs, highlighting, and other testing-center requirements.

An open-book HVACR examination still requires strong technical preparation. With 100 questions and a limited testing period, candidates cannot depend on researching every answer from the beginning. Strong candidates should be able to recognize the system or code subject first and use the books strategically when a detailed requirement needs confirmation.

For example, gas piping and combustion questions may lead to the International Fuel Gas Code, while ventilation, exhaust, mechanical equipment, duct systems, and installation requirements may require the International Mechanical Code.

Load calculations and residential system sizing can involve Manual J principles, while duct sizing practice can be supported with a Ductulator. Boiler questions can be reinforced with Low Pressure Boilers, and refrigeration or air-conditioning concepts can be reviewed with Modern Refrigeration and Air Conditioning.

Practice should combine technical knowledge with reference navigation. Identify what the question is asking, choose the correct reference, locate the applicable section or table, and confirm the answer without spending excessive time in unrelated material.

Licensing Steps

1. Confirm that the Master HVACR license matches your intended scope. Delaware's Master HVACR classification covers broad heating, air conditioning, refrigeration, ventilation, process cooling or heating systems, and associated gas piping.
2. Create or access a DELPROS account. Delaware uses DELPROS for professional licensing applications and related services.
3. Submit the Master HVACR application. Complete the applicable application and provide the supporting documentation required by the Board.
4. Meet the applicable experience pathway. Applicants with a federally approved HVACR journeyman certificate must provide the apprenticeship completion certificate and qualifying post-certificate work experience.
5. Complete the applicable bypass process when required. Applicants without an accepted journeyman certificate may be required to document qualifying supervised experience and pass the applicable apprenticeship bypass examination before proceeding.
6. Provide CFC certification documentation. Master HVACR applicants must submit a copy of the applicable CFC Certification card as part of the licensing process.
7. Receive Board approval to sit for the Master examination. The Delaware Board reviews the application before authorizing testing.
8. Register with ProV. Once approved, candidates receive examination registration and scheduling information from ProV.
9. Prepare for the open-book examination. Study general HVACR knowledge, piping, equipment, system sizing, ventilation, exhaust, testing, and inspection.
10. Take the examination and earn the required score. Delaware requires a minimum score of 70%.
11. Complete remaining licensing requirements. After the Board receives the official passing score and verifies that all requirements have been satisfied, the license may be issued.

State Requirements

The Delaware Master HVACR license is administered by the Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners.

For applicants using a recognized journeyman pathway, Delaware requires a copy of the HVACR apprenticeship program Certificate of Completion and proof of at least two years of work experience under the supervision of a master licensee after receiving the certificate.

Applicants who do not have an accepted journeyman certificate must generally provide proof of at least seven years of work experience under the supervision of a master licensee. The Board reviews that experience and may require the applicant to complete the applicable apprenticeship bypass examination before authorization for the Master licensure examination.

Master HVACR applicants must also provide a copy of their CFC Certification card. This reflects the refrigeration-related scope associated with Master HVACR work.

The Board must approve candidates before they may sit for the Master examination. After approval, ProV provides the examination information, scheduling instructions, permitted testing materials, and current Candidate Information Bulletin.

Delaware requires at least 70% to pass the Master HVACR licensure examination. Applicants who do not receive a passing score after three attempts are subject to the state's reapplication requirements before testing again.

Passing the examination alone does not automatically issue the license. The Board must also verify the applicant's work experience, certification documentation, application materials, and all other applicable licensing requirements.

Reference Books

• International Fuel Gas Code, 2018
  Supports preparation involving fuel gas piping, combustion air, gas appliances, venting, installation requirements, gas piping materials, sizing, testing, and fuel gas safety.
• International Mechanical Code, 2018
  Supports preparation involving mechanical equipment, ventilation, exhaust systems, duct construction, combustion air, refrigeration, equipment installation, clearances, and other mechanical system requirements.
• Low Pressure Boilers, 5th Edition
  Supports study of low-pressure boiler construction, operation, controls, combustion, fittings, maintenance, safety, steam and hot-water systems, and related heating-system principles.
• Modern Refrigeration and Air Conditioning, 22nd Edition
  Supports preparation involving refrigeration cycles, air conditioning systems, refrigerants, compressors, condensers, evaporators, controls, troubleshooting, installation, service, airflow, heating, and HVACR fundamentals.
• Ductulator
  Supports duct-sizing practice involving airflow, duct dimensions, velocity, friction relationships, and practical air-distribution calculations.
• Residential Load Calculation - Manual J, 8th Edition
  Supports preparation involving residential heating and cooling load calculations, building heat gain and heat loss, design conditions, envelope characteristics, and equipment-sizing concepts.

Test Information and Study Materials

A strong Delaware Master HVACR study plan should begin with General Knowledge. With 28 questions, this category represents the largest portion of the examination and can involve refrigeration theory, air conditioning, heating, combustion, controls, airflow, safety, and mechanical fundamentals.

Refrigeration principles should receive careful review. Candidates should understand the refrigeration cycle, compressor function, condensation, expansion, evaporation, superheat, subcooling, refrigerant flow, and the relationship among system pressures and temperatures.

Heating systems should include furnaces, boilers, heat pumps, combustion equipment, controls, hydronic relationships, and warm-air distribution. Use Low Pressure Boilers to reinforce boiler-specific concepts and safety practices.

Piping accounts for 12 questions. Study refrigerant piping, gas piping, condensate, hydronic piping, materials, joining methods, supports, sizing principles, installation, testing, and related mechanical requirements.

Equipment accounts for 18 questions. Candidates should understand equipment selection, installation, clearances, controls, service access, efficiency considerations, safety devices, and how individual components function within the complete system.

System Sizing and Installation is another 18-question category. Manual J can help reinforce residential load calculation concepts, while Ductulator practice can strengthen airflow and duct-sizing skills.

Candidates should understand that proper system sizing involves more than choosing equipment by nominal capacity. Building heat gain, heat loss, airflow, duct performance, system configuration, design conditions, and equipment characteristics all affect correct sizing.

Ventilation and Exhaust Systems accounts for 14 questions. Review outdoor air, mechanical ventilation, exhaust requirements, duct systems, air movement, make-up air, equipment exhaust, and the code provisions governing these systems.

Testing and Inspection accounts for 10 questions. Candidates should understand system testing, pressure testing, inspections, equipment commissioning concepts, verification of safe operation, and recognition of improper installations.

The International Fuel Gas Code, 2018 should be used regularly during preparation. Become familiar with gas piping, appliance installation, combustion air, venting, pressure testing, and related safety requirements.

The International Mechanical Code, 2018 should be studied alongside practical HVACR material. Code-based questions may ask about ventilation, ducts, mechanical rooms, exhaust, refrigeration, equipment installation, or clearances.

Modern Refrigeration and Air Conditioning, 22nd Edition can help strengthen broader system understanding. When a practice question exposes a weakness in refrigeration theory, airflow, controls, troubleshooting, or equipment operation, return to the underlying concept rather than memorizing the answer.

Low Pressure Boilers, 5th Edition can be used to reinforce boiler terminology, controls, combustion, fittings, operation, maintenance, and safety.

Manual J should be used to understand the process behind residential heating and cooling loads. Candidates should recognize how windows, walls, roofs, infiltration, orientation, design temperature, occupancy, and internal loads affect equipment-sizing decisions.

The Ductulator can support practice involving airflow, duct size, friction rate, and velocity. Candidates should become comfortable moving among airflow requirements, duct dimensions, and practical distribution-system decisions.

Practice questions should eventually combine multiple subjects. A single scenario might involve equipment selection, gas piping, venting, combustion air, duct sizing, and testing. Master-level preparation should develop the ability to see how these systems interact.

When a practice question is missed, classify the reason. The problem may involve weak HVACR theory, incorrect code navigation, calculation error, unfamiliar terminology, or confusion about equipment operation.

For code questions, identify the subject before searching. For calculation questions, write down the known values and determine what must be found. For equipment questions, think through the complete operating sequence and the role each component plays.

Use the included 3 months access to build repetition into your study plan. Revisit weak categories, repeat mixed-topic practice, and gradually increase the amount of timed review as examination day approaches.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep supports Delaware Master HVACR candidates through organized study guidance, trade-focused review, practice-oriented preparation, reference navigation when applicable, and confidence-building study structure.

The online practice questions help candidates actively apply HVACR knowledge instead of relying only on passive reading. Practice can reinforce refrigeration, heating, gas piping, equipment, ventilation, ductwork, system sizing, testing, and inspection.

Reference-navigation practice can help candidates become more comfortable using the International Fuel Gas Code, International Mechanical Code, Manual J, boiler references, refrigeration texts, and duct-sizing tools during open-book preparation.

Trade-focused review helps connect individual topics into complete mechanical systems. Candidates can practice understanding how load calculations affect equipment selection, how equipment affects airflow, how airflow affects duct design, and how installation must satisfy applicable mechanical and fuel gas requirements.

With 3 months access included, candidates can develop a consistent preparation routine, revisit challenging subjects, and use repeated practice to strengthen technical knowledge and problem-solving speed.

The goal is to help candidates approach the Delaware Master HVACR examination with stronger technical knowledge, improved code familiarity, better system-sizing skills, and a structured study process without guaranteeing a passing score or license approval.

How many questions are on the Delaware Master HVACR exam?

The current Master HVACR examination contains 100 questions.

What score is required to pass?

Delaware currently requires a minimum score of 70% on the Master HVACR examination.

Is the Delaware Master HVACR exam open book?

Yes. The Master HVACR examination is an open-book test using approved references identified in the current ProV Candidate Information Bulletin.

Who administers the Delaware Master HVACR examination?

Delaware currently uses ProV to administer the Master HVACR licensure examination.

Who regulates Master HVACR contractors in Delaware?

The license is administered through the Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners.

What is the largest exam category?

General Knowledge is the largest category with 28 questions.

Does the exam cover system sizing?

Yes. System Sizing and Installation accounts for 18 questions.

Does the exam cover ventilation and exhaust systems?

Yes. Ventilation and Exhaust Systems accounts for 14 questions.

Does the exam include testing and inspection?

Yes. Testing and Inspection accounts for 10 questions.

What references are associated with these online practice questions?

The product uses the International Fuel Gas Code 2018, International Mechanical Code 2018, Low Pressure Boilers 5th Edition, Modern Refrigeration and Air Conditioning 22nd Edition, Ductulator, and Residential Load Calculation - Manual J, 8th Edition.

How long do I have access to the online practice questions?

This product includes 3 months access.

Should I study refrigeration theory?

Yes. Refrigeration principles, components, pressures, temperatures, controls, and system operation are important areas of Master HVACR preparation.

Should I practice residential load calculations?

Yes. Manual J concepts can help candidates prepare for residential heating and cooling load calculations and equipment-sizing questions.

Should I practice duct sizing?

Yes. Duct sizing, airflow, friction, velocity, ventilation, and air-distribution concepts are valuable areas of preparation for the Master HVACR exam.

Do I need Board approval before taking the exam?

Yes. The Delaware Board must approve the application before the candidate may sit for the Master HVACR examination.

Does passing the exam automatically issue a Master HVACR license?

No. Candidates must also satisfy the applicable experience, CFC certification, application, documentation, and other licensing requirements established by the Delaware Board.

Does this product guarantee that I will pass the Delaware Master HVACR exam?

No. These online practice questions are designed to support organized preparation. Examination performance depends on each candidate's experience, study, HVACR knowledge, code familiarity, calculation skills, and performance on test day.