Delaware Master HVACR Restricted Air Conditioning Contractor Exam Book Package

Prepare for the Delaware Master HVACR Restricted Air Conditioning examination with a complete reference package covering mechanical systems, fuel-gas requirements, refrigeration principles, air-conditioning equipment, residential load calculations, commercial load calculations, piping, system sizing, plan reading, installation, maintenance, and troubleshooting.

The Delaware Master HVACR Restricted Air Conditioning Contractor Exam Book Package includes 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.

These five references provide a coordinated study library for experienced air-conditioning technicians, refrigeration professionals, HVACR supervisors, journeypersons, qualifying applicants, and other candidates pursuing Delaware Master HVACR Restricted Air Conditioning licensure.

The Delaware restricted air-conditioning examination requires candidates to connect practical field experience with technical knowledge, code interpretation, calculations, equipment information, and open-book reference navigation. Candidates should understand how air-conditioning and refrigeration systems operate and how the applicable requirements affect design, installation, repair, maintenance, and system performance.

The International Mechanical Code supports preparation involving mechanical equipment, refrigeration systems, ventilation, exhaust, duct construction, warm-air heating, boilers, combustion air, chimneys, vents, clearances, and installation requirements. The International Fuel Gas Code supports fuel-gas piping, appliance connections, pressure regulation, combustion air, venting, testing, and system safety.

Modern Refrigeration and Air Conditioning provides broad technical coverage of refrigeration cycles, compressors, condensers, evaporators, metering devices, heat pumps, air-conditioning systems, electrical controls, troubleshooting, maintenance, installation, and service practices.

Manual N supports commercial heating and cooling load calculations for small commercial buildings. Manual J supports residential heating and cooling load calculations. Together, these references help candidates prepare for questions involving building characteristics, indoor and outdoor design conditions, ventilation, infiltration, occupancy, equipment, lighting, insulation, windows, and system capacity.

This standard book package provides the listed references in one product so candidates can concentrate on preparation instead of locating each publication separately. Candidates can use the books for technical review, calculation practice, code searches, and timed open-book exercises.

This product includes the standard books listed on this page. Highlighting, tabs, online course access, Application Service, book rental, refundable deposits, examination registration, licensing fees, business formation, EIN filing, and contractor compliance services are not included unless purchased through another package.

Exam Details

The Delaware Master HVACR Restricted Air Conditioning examination is part of the professional licensing process overseen by the Delaware Board of Plumbing, Heating, Ventilation, Air Conditioning and Refrigeration Examiners. Applicants pursuing licensure by examination must receive Board approval before scheduling the test through the approved examination provider.

The examination evaluates knowledge associated with the design, installation, maintenance, repair, fabrication, alteration, and extension of air-conditioning and refrigeration systems. Its scope also includes piping vessels, warm-air heating, boilers, ventilation systems, duct systems, insulation, and related components within complete systems.

The examination contains 95 questions, and candidates are allowed four hours to complete it. A minimum score of 70 percent is required to pass.

The examination outline includes General Knowledge, Plan Reading, Systems and Sizing, Piping, Equipment, and Maintenance. Candidates should balance their preparation across all six areas rather than concentrating only on refrigeration theory or code navigation.

General Knowledge includes 22 questions. Preparation should address refrigeration principles, heat transfer, temperature, pressure, humidity, airflow, electrical fundamentals, combustion, insulation, tools, safety practices, system operation, and common HVACR terminology.

Plan Reading includes eight questions. Candidates may need to interpret mechanical symbols, equipment schedules, duct layouts, piping routes, system notes, dimensions, equipment locations, load information, and installation details.

Systems and Sizing includes 17 questions. Study should include residential and commercial load calculations, equipment selection, airflow requirements, duct sizing, system capacity, design temperatures, ventilation loads, and building-performance factors.

Piping includes 14 questions. Candidates should review refrigerant piping, fuel-gas piping, approved materials, joining procedures, valves, regulators, supports, pressure considerations, sizing methods, testing, and protection from physical damage.

Equipment includes 18 questions. Preparation should cover compressors, condensers, evaporators, metering devices, heat pumps, air handlers, furnaces, refrigeration systems, motors, controls, safety devices, and other air-conditioning components.

Maintenance includes 16 questions. Candidates should understand troubleshooting, refrigerant-system evaluation, electrical checks, airflow measurements, leak detection, equipment cleaning, control verification, startup procedures, testing, and preventive maintenance.

The four-hour testing period requires candidates to manage direct-answer questions, calculations, plan interpretation, reference searches, and final review. Timed practice with the books can help candidates develop a more consistent test-taking approach.

Open Book Test

The Delaware Master HVACR Restricted Air Conditioning examination is an open-book test. Candidates may use authorized printed reference materials under the examination provider’s current rules.

An open-book format does not eliminate the need for preparation. The five references contain extensive technical information, and candidates may not have enough time to research every question from the beginning. Strong performance requires technical knowledge and familiarity with the organization of each book.

The International Mechanical Code should be used for questions involving equipment installation, ventilation, exhaust systems, duct construction, refrigeration machinery, warm-air heating, boilers, combustion air, chimneys, vents, clearances, and mechanical-system requirements.

The International Fuel Gas Code supports questions involving gas-piping materials, sizing, appliance connections, regulators, shutoff valves, combustion air, venting, pressure testing, and installation safety.

Modern Refrigeration and Air Conditioning supports technical questions involving refrigeration cycles, refrigerants, compressors, condensers, evaporators, metering devices, heat pumps, air-conditioning equipment, motors, controls, installation, maintenance, and troubleshooting.

Manual N supports load calculations for small commercial buildings. Candidates should understand how occupancy, lighting, equipment, ventilation, infiltration, windows, construction, orientation, and design conditions influence calculated heating and cooling loads.

Manual J supports residential load calculations. Candidates should review how insulation, windows, doors, orientation, infiltration, climate, occupancy, and internal heat gains affect residential equipment-sizing decisions.

Practice selecting the correct reference before beginning a search. Mechanical installation questions may lead to the International Mechanical Code. Fuel-gas questions may require the International Fuel Gas Code. Refrigeration or equipment questions may be easier to research in Modern Refrigeration and Air Conditioning.

Residential load questions may require Manual J, while small commercial load questions may require Manual N. Recognizing these distinctions can reduce unnecessary searching and improve efficiency during timed practice.

Read each provision, formula, or table in context. Definitions, exceptions, table notes, equipment conditions, and nearby sections may affect the correct interpretation. Avoid selecting an answer based only on an isolated sentence or familiar phrase.

Candidates should review the current testing rules before exam day. Requirements may address permanent tabs, highlighting, handwritten notes, inserts, loose paper, removable markers, photocopies, calculators, and other test-day materials.

Licensing Steps

Begin by confirming that the Delaware Master HVACR Restricted Air Conditioning license matches the work you intend to perform. A restricted license permits services only within the specialty identified on the license.

Create a user account through Delaware Professional Regulation Online Services and begin the applicable Master HVACR Restricted application in DELPROS. Delaware professional licensing applications and supporting documents are submitted through the online system.

Gather the records required for the applicable licensing pathway. Supporting documents may include apprenticeship records, employment verification, certification information, professional license verification, and other materials requested by the Board.

Applicants for the restricted air-conditioning classification must provide the required certification and qualifying experience documentation. The application pathway depends on the applicant’s apprenticeship background, work experience, and current licensing status.

An applicant with an acceptable journeyman certificate must provide the applicable apprenticeship completion documentation and proof of qualifying experience obtained under the supervision of a master licensee.

An applicant without an acceptable journeyman certificate must document the required period of qualifying supervised experience. The Board determines whether an Apprenticeship By-Pass Examination is also required.

Submit the completed application and all required attachments through DELPROS. The Board reviews the application and determines whether the candidate qualifies to sit for the Master HVACR Restricted Air Conditioning examination.

After receiving approval, follow the examination provider’s registration and scheduling instructions. Review identification requirements, appointment procedures, authorized references, calculator policies, and testing rules before selecting a test date.

Prepare with the books in this package. Review general HVACR knowledge, plan reading, systems and sizing, piping, equipment, maintenance, mechanical-code requirements, fuel-gas provisions, refrigeration, and load calculations.

Complete the examination and earn the required passing score. Official examination results are reported through the testing and licensing process.

Complete any remaining application requirements after passing. Passing the examination is one part of the licensing process and does not automatically issue a professional license when supporting documents or other requirements remain outstanding.

State Requirements

Delaware requires professionals providing regulated HVACR services to hold the appropriate professional license unless a specific legal exemption applies. Holding a license in another jurisdiction does not automatically authorize HVACR work in Delaware.

A Master HVACR Restricted license permits services only within the specialty shown on the license. Delaware restricted specialties include forced-air heating, ventilation and gas piping; hydronic heating and gas piping; commercial hood systems; refrigeration; air conditioning; and gas piping.

The restricted air-conditioning classification applies to work within the state-defined air-conditioning specialty. Professionals planning to provide services in more than one restricted specialty should review the unrestricted Delaware Master HVACR license.

Applicants should submit complete, accurate, and consistent documentation. Missing experience records, incomplete certification information, or conflicting application details may delay Board review and examination authorization.

The Delaware Board determines whether an applicant qualifies for examination and licensure. The examination provider administers the test but does not determine whether an applicant satisfies the state’s professional licensing requirements.

A Delaware Master HVACR Restricted Air Conditioning license does not automatically authorize plumbing work involving systems used to bring water into a building or remove liquid and water-carried waste. Separate plumbing authority may be required for that work.

After passing the examination, candidates must complete all remaining application requirements before the professional license can be issued. Applicants should monitor their DELPROS accounts and email for updates or requests for additional information.

Licensed HVACR professionals must comply with applicable renewal, continuing education, professional conduct, and other requirements associated with their licensing period.

A Delaware professional HVACR license is separate from a business license. Individuals planning to operate an air-conditioning contracting company may also need a legal business entity, business registration, insurance, tax accounts, and other operational approvals.

Reference Books

• International Mechanical Code, 2018
  This code reference covers mechanical equipment, ventilation, exhaust systems, duct construction, refrigeration systems, warm-air heating, boilers, combustion air, chimneys, vents, clearances, supports, and related installation requirements.
• International Fuel Gas Code, 2018
  This code reference supports study of fuel-gas piping, appliance connections, pressure regulators, shutoff valves, combustion air, venting, pressure testing, sizing tables, approved materials, and fuel-gas installation safety.
• Modern Refrigeration and Air Conditioning, 22nd Edition
  This comprehensive technical reference provides broad coverage of refrigeration, air conditioning, heating, heat pumps, electrical controls, motors, tools, equipment, installation, troubleshooting, maintenance, and service procedures.
• Manual N – Commercial Load Calculation for Small Commercial Buildings, 5th Edition
  This reference supports commercial heating and cooling load calculations using construction data, occupancy, lighting, equipment, ventilation, infiltration, climate, building orientation, and indoor and outdoor design conditions.
• Residential Load Calculation – Manual J, 8th Edition
  This reference supports residential heating and cooling load calculations using building construction, insulation, windows, doors, orientation, infiltration, climate, occupancy, and internal heat gains.

Test Information and Study Materials

Begin preparation with refrigeration and air-conditioning fundamentals. Review heat transfer, pressure-temperature relationships, refrigeration cycles, refrigerant flow, compressors, condensers, evaporators, metering devices, superheat, subcooling, airflow, humidity, and troubleshooting.

Study mechanical-code subjects involving equipment installation, ventilation, exhaust, duct construction, refrigeration machinery, boilers, combustion air, chimneys, vents, supports, clearances, and equipment-room requirements.

Review fuel-gas systems, including piping materials, sizing, appliance connections, pressure regulators, shutoff valves, combustion air, venting, testing, and installation safety. Read table headings, footnotes, and conditions carefully.

Practice residential and commercial load calculations. Learn how insulation, windows, orientation, occupancy, lighting, equipment, ventilation, infiltration, construction, and design temperatures affect calculated loads.

Strengthen plan-reading skills by reviewing mechanical symbols, equipment schedules, duct layouts, piping routes, equipment locations, dimensions, system notes, and load information.

Study piping subjects such as refrigerant-line sizing, fuel-gas pipe sizing, approved materials, joining methods, valves, regulators, supports, pressure considerations, testing, and protection from damage.

Review equipment operation and maintenance. Study compressors, coils, heat pumps, air handlers, furnaces, motors, controls, refrigeration components, test instruments, electrical checks, airflow measurements, leak detection, cleaning, and preventive maintenance.

Complete timed reference-navigation exercises using all five books. Identify the subject, select the correct reference, locate the applicable information, and review the complete provision or calculation procedure.

Keep a record of missed practice questions. Determine whether each error resulted from a technical knowledge gap, calculation mistake, incorrect reference selection, overlooked table note, or misunderstanding of the question.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep helps Delaware Master HVACR Restricted Air Conditioning candidates prepare with a coordinated reference package covering mechanical requirements, fuel-gas systems, refrigeration, air-conditioning equipment, residential loads, commercial loads, piping, plans, and maintenance.

The package supports trade-focused review by bringing the listed references together in one organized set. Candidates can use the books to strengthen technical knowledge, complete calculations, study code requirements, and practice open-book navigation.

Reference-navigation practice helps candidates become familiar with the structure and purpose of the International Mechanical Code, International Fuel Gas Code, Modern Refrigeration and Air Conditioning, Manual N, and Manual J.

Using the actual references consistently helps candidates develop a repeatable process for identifying the subject, selecting the correct publication, locating the applicable material, and interpreting the complete requirement.

Practice-oriented preparation can include code searches, load calculations, equipment scenarios, plan-reading exercises, piping questions, and maintenance review. This approach helps candidates apply the material instead of relying only on passive reading.

1 Exam Prep provides an organized book package without guaranteeing a passing score, examination result, or license approval. Results depend on the candidate’s experience, preparation, technical knowledge, reference-navigation ability, and performance.

Frequently Asked Questions

What is included in the Delaware Master HVACR Restricted Air Conditioning Contractor Exam Book Package?

The package includes the International Mechanical Code, International Fuel Gas Code, Modern Refrigeration and Air Conditioning, Manual N, and Manual J in the editions listed on this page.

Is the Delaware restricted air-conditioning examination open book?

Yes. The examination is open book and permits authorized printed references under the examination provider’s current rules.

How many questions are on the examination?

The examination contains 95 questions.

How much time is allowed?

Candidates are allowed four hours to complete the examination.

What score is required to pass?

A minimum score of 70 percent is required to pass the examination.

Are the books highlighted and tabbed?

No. This product includes standard editions of the listed books. Highlighted and tabbed books are available through a separate package.

Does this package include an online course?

No. This product includes the listed books only. Online exam preparation is available separately.

Does this package include Application Service?

No. Application Service is not included with this standard exam book package.

Why are both Manual N and Manual J included?

Manual N supports heating and cooling load calculations for small commercial buildings, while Manual J supports residential heating and cooling load calculations.

Why are both mechanical and fuel-gas codes included?

The examination covers mechanical installations and fuel-gas subjects, including equipment, ventilation, duct systems, piping, combustion air, venting, and installation safety.

Should I practice using every reference before exam day?

Yes. Timed practice helps candidates learn which publication addresses each subject and improves their ability to locate information efficiently.

Does purchasing this package guarantee a passing score?

No. The package provides the listed references for study and open-book navigation, but examination results depend on the candidate’s knowledge, preparation, and performance.