Delaware Master HVACR Restricted Air Conditioning Contractor Exam - Online Practice Questions

Prepare for the Delaware Master HVACR Restricted Air Conditioning Contractor examination with online practice questions designed to reinforce air conditioning, refrigeration, piping, equipment, system sizing, installation, plan reading, ventilation, ductwork, load calculations, maintenance, and other technical subjects associated with the Restricted Air Conditioning license.

This online practice-question product includes 3 months access, giving candidates time to build a consistent study routine, work through HVACR questions, revisit weaker subjects, strengthen calculation skills, and practice using technical references before the official examination.

The Delaware Master HVACR Restricted - Air Conditioning license is administered through the Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners. Delaware's restricted HVACR licenses limit practice to a particular specialty. The Restricted Air Conditioning examination focuses on the design, installation, maintenance, repair, fabrication, alteration, and extension of air conditioning and refrigeration equipment and associated systems within the scope of the license.

The current Delaware Master HVACR Restricted Air Conditioning examination contains 95 questions and allows 4 hours for completion. Candidates must earn a minimum score of 70% to pass. The examination is administered by ProV after the Delaware Board approves the applicant to test.

The exam covers General Knowledge, Plan Reading, Systems and Sizing, Piping, Equipment, and Maintenance. Candidates should be prepared to combine HVACR theory with practical system knowledge, equipment selection, load calculations, duct and airflow concepts, piping, troubleshooting, installation practices, and code application.

The study references associated with these online practice questions include the International Mechanical Code, 2018, International Fuel Gas Code, 2018, Modern Refrigeration and Air Conditioning, 22nd Edition, Manual N - Commercial Load Calculation for Small Commercial Buildings, 5th Edition, and Residential Load Calculation - Manual J, 8th Edition.

Practice questions can help candidates move from passive reading to active problem solving. Instead of simply reviewing an HVACR textbook or code chapter, candidates can work through a technical situation, determine which principles apply, perform necessary calculations, and then return to the appropriate reference to reinforce the concept.

Exam Details

The current Delaware Master HVACR Restricted - Air Conditioning examination contains 95 questions. Candidates receive 4 hours to complete the examination.

The current examination content outline includes:

• General Knowledge: 22 questions
• Plan Reading: 8 questions
• Systems & Sizing: 17 questions
• Piping: 14 questions
• Equipment: 18 questions
• Maintenance: 16 questions

General Knowledge is the largest individual category with 22 questions. Candidates should be comfortable with refrigeration principles, air conditioning fundamentals, heating concepts, airflow, controls, system operation, safety, and general HVACR terminology.

Equipment accounts for 18 questions. This category can involve compressors, condensers, evaporators, air handlers, furnaces, controls, motors, fans, coils, refrigeration components, and other equipment found in complete air conditioning systems.

Systems & Sizing represents 17 questions. Candidates should understand heating and cooling loads, equipment selection, duct and airflow relationships, system capacity, design conditions, and the factors that affect proper sizing.

Maintenance accounts for 16 questions, while Piping accounts for 14 questions and Plan Reading accounts for 8 questions. Together, these categories require candidates to understand both system design and the practical work of installing, servicing, evaluating, and maintaining HVACR equipment.

Delaware requires candidates to achieve at least 70% on the licensure examination.

Open Book Test

The Delaware Master HVACR Restricted Air Conditioning 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 current examination-provider rules concerning permitted books, book condition, highlighting, tabs, notes, and other modifications.

Open-book testing rewards candidates who understand both the technical material and the organization of their references. With 95 questions in 4 hours, spending too much time searching for every answer can make time management difficult.

Practice should therefore begin with identifying the subject. A mechanical equipment, ventilation, duct, or refrigeration question may lead to the International Mechanical Code or refrigeration reference. A load-calculation question may involve Manual J or Manual N concepts.

The International Fuel Gas Code, 2018 is included with this practice-question product as a study reference for fuel gas, combustion, appliance, venting, and related concepts that may support broader HVACR preparation.

As study progresses, candidates should practice answering familiar technical questions from knowledge and using references strategically when they need to confirm a detailed requirement, table, calculation procedure, or installation condition.

Licensing Steps

1. Confirm that Restricted Air Conditioning is the correct license. Delaware offers Master HVACR and Master HVACR Restricted licenses, with restricted licenses limited to specific HVACR specialties.
2. Create or access a DELPROS account. Delaware uses DELPROS for professional license applications and related services.
3. Submit the Master HVACR Restricted application. Select the Air Conditioning restriction and provide the supporting documentation required by the Board.
4. Meet the applicable experience pathway. Applicants must document the qualifying HVACR training and work experience required for restricted licensure.
5. Complete the applicable apprenticeship bypass process when required. Applicants without an accepted journeyman certificate may need to qualify through the applicable restricted bypass pathway.
6. Provide the required CFC Certification documentation. Delaware requires a copy of the applicable CFC Certification card for Master HVACR Restricted - Air Conditioning applicants.
7. Receive Board approval to test. The Delaware Board must approve the candidate before the Master HVACR Restricted Air Conditioning examination can be scheduled.
8. Register with ProV. Approved candidates receive examination scheduling and testing information from ProV.
9. Prepare for the open-book exam. Review General Knowledge, Plan Reading, Systems and Sizing, Piping, Equipment, and Maintenance.
10. Take the 95-question examination. Candidates receive 4 hours to complete the test.
11. Earn the required passing score. A minimum score of 70% is required.
12. Complete remaining licensing requirements. After the Board receives the official passing score and verifies all other requirements, the license may be issued.

State Requirements

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

Delaware issues both unrestricted Master HVACR licenses and Master HVACR Restricted licenses. Restricted licenses limit the license holder's practice to the specialty identified on the license, such as air conditioning.

Applicants pursuing Restricted Air Conditioning licensure by examination must complete the applicable DELPROS application and submit the required experience, apprenticeship, training, certification, and other supporting documentation.

Applicants using an approved HVACR journeyman pathway must provide the applicable apprenticeship completion documentation and qualifying experience required by the Board. Applicants without an accepted journeyman certificate may qualify through an experience and apprenticeship bypass pathway.

Delaware updated its HVACR regulations in 2025 to clarify that an applicant pursuing a restricted HVACR license needs to pass only the portion of the apprenticeship bypass examination relevant to the requested restriction.

Applicants for the Master HVACR Restricted - Air Conditioning license must also provide a copy of their CFC Certification card.

The Board must approve the application before the candidate may take the licensure examination. Delaware requires a minimum score of 70% to pass.

Applicants who do not receive a passing score after three examination attempts are subject to Delaware's reapplication requirements and must obtain Board approval before testing again after the applicable waiting period.

Passing the examination does not automatically issue the license. The Board must also verify that the applicant has satisfied all experience, application, certification, and documentation requirements.

Reference Books

• International Mechanical Code, 2018
  Supports preparation involving mechanical systems, air conditioning equipment, refrigeration, ventilation, exhaust, ducts, equipment installation, clearances, combustion air, system safety, and mechanical code requirements.
• International Fuel Gas Code, 2018
  Supports broader HVACR study involving fuel gas piping, appliances, combustion air, venting, installation requirements, gas safety, and the relationship between fuel-burning equipment and mechanical systems.
• Modern Refrigeration and Air Conditioning, 22nd Edition
  Supports preparation involving refrigeration cycles, air conditioning systems, compressors, evaporators, condensers, controls, heating equipment, airflow, troubleshooting, service, installation, and HVACR fundamentals.
• Manual N - Commercial Load Calculation for Small Commercial Buildings, 5th Edition
  Supports preparation involving heating and cooling load calculations for small commercial buildings, including design conditions, envelope loads, internal loads, ventilation, and equipment-sizing concepts.
• Residential Load Calculation - Manual J, 8th Edition
  Supports preparation involving residential heating and cooling load calculations, heat gain, heat loss, building characteristics, design temperatures, infiltration, and equipment-sizing principles.

Test Information and Study Materials

A strong Delaware Master HVACR Restricted Air Conditioning study plan should begin with General Knowledge. With 22 questions, it is the largest category on the current examination.

Refrigeration theory should receive substantial attention. Candidates should understand the refrigeration cycle, compressors, condensers, metering devices, evaporators, refrigerant flow, pressure-temperature relationships, superheat, subcooling, and heat transfer.

Air conditioning fundamentals should include sensible and latent heat, humidity, psychrometric relationships, airflow, filtration, coils, condensate management, thermostatic controls, and the way individual components interact within the complete system.

Plan Reading accounts for 8 questions. Candidates should practice reading mechanical drawings, equipment schedules, duct layouts, piping arrangements, dimensions, symbols, and other information used to communicate HVACR system design.

Plan-reading questions can require more than identifying a symbol. Candidates may need to determine how equipment, piping, ducts, and spaces relate to one another and recognize whether a proposed installation matches the design.

Systems & Sizing accounts for 17 questions and should receive significant preparation. Proper air conditioning design begins with understanding the building load rather than selecting equipment solely by floor area or nominal capacity.

Manual J, 8th Edition can support residential load calculation preparation. Study how outdoor and indoor design conditions, windows, walls, ceilings, floors, infiltration, orientation, and internal loads affect heating and cooling requirements.

Manual N supports small commercial load calculation concepts. Commercial spaces may introduce different occupancy schedules, lighting loads, equipment loads, ventilation requirements, building configurations, and operating conditions.

Candidates should understand the relationship between load calculation and equipment selection. Oversizing and undersizing can affect comfort, humidity control, energy performance, equipment cycling, and overall system operation.

Piping accounts for 14 questions. Study refrigerant piping, condensate piping, gas piping concepts, materials, joints, supports, sizing, insulation, routing, testing, and protection.

Refrigerant piping preparation should include the relationship between line sizing, pressure drop, refrigerant velocity, oil return, equipment capacity, and system configuration.

Equipment accounts for 18 questions, making it one of the largest categories. Candidates should understand compressors, condensers, evaporators, air handlers, fan-coil units, packaged systems, heat pumps, motors, controls, and other HVACR equipment.

Study each component by function. Know what it does, how it interacts with the rest of the system, what conditions affect its operation, and what symptoms might indicate improper performance.

Maintenance accounts for 16 questions. Candidates should understand preventive maintenance, troubleshooting, refrigerant-system evaluation, airflow checks, coil condition, filters, electrical controls, condensate systems, equipment inspection, and recognition of abnormal operation.

Maintenance questions often require practical reasoning. Rather than memorizing isolated symptoms, understand what happens to pressures, temperatures, airflow, and equipment operation when a component becomes restricted, dirty, improperly adjusted, or defective.

The International Mechanical Code, 2018 should be used throughout preparation for mechanical equipment, duct systems, ventilation, refrigeration, installation, access, clearances, and related requirements.

The International Fuel Gas Code, 2018 can support study when HVACR work involves gas-fired equipment, venting, combustion air, fuel gas piping, or other gas-related system relationships.

Modern Refrigeration and Air Conditioning, 22nd Edition can help candidates reinforce the technical principles behind code and equipment questions. When a practice question exposes weakness in refrigeration theory, airflow, controls, or troubleshooting, return to the underlying concept before attempting additional questions.

For load questions, work through the process instead of memorizing typical equipment sizes. Identify the building conditions, determine which gains or losses apply, and understand how the calculated load affects system selection.

For plan-reading questions, practice tracing systems from equipment to distribution points. Follow duct routes, refrigerant piping, condensate lines, equipment connections, and mechanical symbols so the complete design becomes easier to visualize.

When a practice question is missed, identify whether the problem involves theory, code application, plan interpretation, calculation, equipment operation, or troubleshooting. This makes it easier to direct additional study toward the actual weakness.

Use the included 3 months access to build repeated practice into your preparation. Start with individual subjects, move into mixed-topic question sets, and return regularly to categories where accuracy remains lower.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep supports Delaware Master HVACR Restricted Air Conditioning 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 across refrigeration, air conditioning, piping, plan reading, equipment, load calculations, system sizing, and maintenance.

Practice-oriented preparation makes it easier to identify weak areas and focus study where it is most useful. Candidates can review missed questions, return to the appropriate reference, and reinforce the technical principle before continuing.

Reference navigation can also be incorporated into study. Candidates can practice identifying whether a question is best supported by the Mechanical Code, Fuel Gas Code, refrigeration text, Manual J, or Manual N.

With 3 months access included, candidates can build a consistent preparation schedule, revisit difficult subjects, and strengthen both technical knowledge and problem-solving speed.

The goal is to help candidates approach the Delaware Master HVACR Restricted Air Conditioning examination with stronger HVACR knowledge, improved code familiarity, better load-calculation and 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 Restricted Air Conditioning exam?

The current examination contains 95 questions.

How much time is allowed for the exam?

Candidates receive 4 hours to complete the examination.

What score is required to pass?

Delaware requires a minimum examination score of 70%.

Is the Delaware Master HVACR Restricted Air Conditioning exam open book?

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

Who administers the examination?

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

Who regulates this license?

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 individual category with 22 questions.

Does the exam include plan reading?

Yes. Plan Reading accounts for 8 questions.

Does the exam cover systems and sizing?

Yes. Systems & Sizing accounts for 17 questions.

Does the exam cover HVACR equipment?

Yes. Equipment accounts for 18 questions.

Does the exam include maintenance?

Yes. Maintenance accounts for 16 questions.

What references are associated with these online practice questions?

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

How long do I have access to the practice questions?

This product includes 3 months access.

Should I study residential load calculations?

Yes. Manual J principles are useful for preparing for residential heating and cooling load and system-sizing concepts.

Should I study commercial load calculations?

Yes. Manual N supports preparation involving heating and cooling load calculations for small commercial buildings.

Is CFC certification required for this Delaware license?

Yes. Delaware requires Master HVACR Restricted - Air Conditioning applicants to submit a copy of the applicable CFC Certification card.

Do I need Board approval before taking the exam?

Yes. The Delaware Board must approve the applicant before the licensure examination can be scheduled.

Does passing the examination automatically issue the license?

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

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

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