Oklahoma Refrigeration Contractor - Online Exam Prep Course

Prepare for the Oklahoma Refrigeration Contractor examination with an online exam prep course focused on refrigeration systems, electrical knowledge and controls, refrigerants, refrigeration piping, compressors, condensers, evaporators, valves, expansion devices, troubleshooting, installation, maintenance, repair, and workplace safety. This preparation is designed for experienced mechanical professionals pursuing an Oklahoma Refrigeration Contractor license through the Oklahoma Construction Industries Board.

The Refrigeration Contractor classification authorizes qualifying license holders to install, alter, modify, service, maintain, or repair refrigeration products, systems, and equipment, including associated process piping. It is a contractor-level mechanical credential and provides a broader professional role than the Refrigeration Journeyman license, including the ability to operate within the contracting structure established by Oklahoma law.

The current Oklahoma Refrigeration Contractor trade examination is administered by PSI after the Oklahoma Construction Industries Board determines that an applicant is eligible to test. The examination contains 80 scored questions, provides 210 minutes, and requires a minimum passing score of 70%. Candidates currently need 56 correct answers to meet the passing standard.

The exam places substantial emphasis on electrical knowledge, refrigeration equipment and components, and refrigeration system operations. Candidates should be prepared to understand both individual components and how an entire refrigeration system operates under normal and abnormal conditions.

This Oklahoma Refrigeration Contractor online exam prep course uses the International Mechanical Code, 2018, Modern Refrigeration and Air Conditioning, 22nd Edition, and Code of Federal Regulations - 29 CFR Part 1926 (OSHA) to support organized trade-exam preparation.

Exam Details

The Oklahoma Refrigeration Contractor examination tests knowledge of the operation, installation, maintenance, repair, fabrication, alteration, and extension of refrigeration systems. The technical scope includes electrical components, piping, refrigerants, refrigeration equipment, and refrigeration-system operation.

The current examination contains 80 scored questions. Candidates receive 210 minutes, or three and one-half hours, to complete the test. A minimum score of 70% is required, which equals 56 correct answers.

Electrical Knowledge and Controls contains 20 questions. This major category covers general electrical theory and knowledge, motors, AC and DC circuits, meters, controls, and relays. Refrigeration contractors should understand how electrical components control system operation and how electrical problems can affect refrigeration performance.

Refrigerants contains 10 questions. Subjects include refrigerant types, refrigerant systems, and refrigerant theory. Candidates should understand refrigerant behavior throughout the refrigeration cycle and the relationship between temperature, pressure, heat transfer, and system performance.

Piping contains five questions covering piping supports, piping materials and sizes, and pressure testing. Candidates should be familiar with installation practices and the role of properly designed and installed piping in refrigeration-system performance.

Refrigeration Equipment and Components contains 20 questions. Topics include valves, compressors, condensers, evaporators, receivers, accumulators, expansion devices, and dryers. Candidates should understand what each component does, where it is located in the system, and how a component problem can influence overall operation.

Refrigeration Systems Operations contains 20 questions. This section addresses system troubleshooting, system operation, installation, maintenance, and repair. Contractor candidates should be prepared to diagnose symptoms, interpret system conditions, identify possible causes, and select appropriate service approaches.

Safety contains five questions. The outline includes safety training requirements, ventilation, first-aid requirements, personal protective equipment, material safety information, work around toxic materials, lockout/tagout procedures, and ladders.

Oklahoma mechanical contractor applicants also encounter a separate Mechanical Business and Law examination. The current Mechanical Business and Law test contains 50 questions, allows 120 minutes, and requires 70%, or 35 correct answers. It covers bidding and estimating, project management, contracts, financial subjects, labor and personnel, risk management, payroll and taxes, and licensing requirements.

Open Book Test

The Oklahoma Refrigeration Contractor trade examination is an open-book test. Candidates are responsible for bringing the approved references they plan to use during the examination.

The current reference list identifies the 2018 International Mechanical Code with Oklahoma revisions as the applicable code reference. Code questions are based on the edition specifically identified by the examination bulletin.

The current PSI reference list identifies the 20th or 21st edition of Modern Refrigeration and Air Conditioning and allows later editions of non-code references in the test area. The 22nd Edition provided for this preparation is a later edition of that approved non-code reference.

The examination also allows Code of Federal Regulations - 29 CFR Part 1926 with the latest available amendments or the applicable PSI selections.

Approved reference materials may be highlighted, underlined, and indexed before the examination. Permanent tabs are permitted. Temporary tabs such as Post-it notes are not allowed.

References may not contain written notes before the examination, and candidates may not write in the approved books during the test. Additional loose papers may not be brought into the exam room with the references.

Downloaded reference materials must be properly secured according to the testing rules. Acceptable preparation methods include spiral binding, hole-punching and placing the material in a binder, or stapling it in the permitted manner.

A silent, non-printing, non-programmable calculator may be used. Candidates should practice working with their references and calculator before exam day so routine searches and calculations do not consume unnecessary time.

With 80 scored questions in 210 minutes, candidates have an average of approximately two minutes and 38 seconds per question. Strong open-book preparation means using the books to confirm answers while relying on developed trade knowledge for familiar refrigeration concepts.

Licensing Steps

1. Begin in the mechanical trade. Gain qualifying refrigeration experience while working within Oklahoma's mechanical licensing structure.
2. Register as an apprentice when applicable. Oklahoma experience used toward mechanical licensing generally requires proper apprentice registration unless a recognized exception applies.
3. Qualify for journeyman licensing. The standard pathway to contractor licensing begins by meeting the qualifications required for an Oklahoma mechanical journeyman license.
4. Gain additional contractor-level experience. Mechanical contractor applicants must meet the journeyman requirements plus an additional year of qualifying mechanical trade experience.
5. Document experience and education. Maintain employment verification, apprentice records, licensing history, transcripts, and other materials necessary to establish eligibility.
6. Submit the Mechanical Contractor License Application. Apply to the Oklahoma Construction Industries Board for the Refrigeration Contractor classification.
7. Receive approval for examination. The Board reviews the application and determines whether the applicant qualifies to test.
8. Schedule through PSI. Approved applicants arrange their required testing through PSI.
9. Prepare the approved trade references. Organize the 2018 International Mechanical Code, refrigeration reference, and OSHA material according to current open-book testing rules.
10. Prepare for the contractor business requirement. Contractor licensing includes the applicable Mechanical Business and Law requirement in addition to the refrigeration trade examination.
11. Take the Refrigeration Contractor examination. Complete 80 scored questions within 210 minutes and earn at least 70%.
12. Complete the Mechanical Business and Law requirement. Prepare for business operations, contracts, financial management, licensing, insurance, bonds, labor, and other contractor subjects.
13. Complete contractor activation requirements. After successfully completing the required examinations and licensing steps, provide the bond and insurance documentation required for an active Oklahoma Mechanical Contractor license.
14. Maintain the active license. Keep required insurance and bond coverage current, comply with apprentice requirements, renew the license, and complete required continuing education.

State Requirements

Oklahoma mechanical contractor applicants must meet the same underlying requirements as a journeyman plus one additional year of experience in the mechanical trade. The Oklahoma Construction Industries Board reviews the applicant's experience and documentation before authorizing contractor examinations.

The standard journeyman qualification route requires an applicant to be at least 18 years old and have three years of verifiable mechanical experience in the category sought. Oklahoma defines one year of verifiable experience as 2,000 hours.

Approved mechanical education may substitute for a portion of the journeyman experience requirement. Oklahoma recognizes several combinations of approved vocational education and verifiable field experience, depending on the number of classroom hours completed.

A mechanical contractor must be a permanent employee, owner, partner, or officer of the mechanical firm. The Refrigeration Contractor license authorizes the licensee to install, alter, modify, service, maintain, or repair refrigeration products, refrigeration systems, and refrigeration equipment, including associated process piping.

After the required examinations are completed, the contractor license remains inactive until the Construction Industries Board receives the required proof of bond and insurance.

An active Oklahoma Mechanical Contractor is currently required to maintain a $5,000 corporate surety bond payable to the Oklahoma Construction Industries Board. The bond must be in the individual license holder's name and meet the state's continuity and cancellation-notice requirements.

An active Mechanical Contractor must also provide evidence of at least $50,000 in commercial general liability insurance. The license holder must keep the coverage current to maintain active contractor status.

Oklahoma also regulates apprentice supervision. Mechanical apprentices may work at a ratio of no more than three apprentices to one contractor under the applicable contractor requirements.

Mechanical contractors must display the required firm name and license number on applicable vehicles and include the contractor license number on advertising, contracts, and bids as required by Oklahoma contractor rules.

Oklahoma mechanical contractors are subject to continuing education requirements. Mechanical licensees currently complete six hours of approved continuing education every 36 months as part of maintaining the license.

If a candidate fails an examination on the first attempt, the current PSI rules require a 30-day waiting period before retesting. For non-electrical examinations, failures after the first unsuccessful attempt generally require a 90-day waiting period.

Reference Books

• International Mechanical Code, 2018
  The 2018 International Mechanical Code with Oklahoma revisions is the designated code reference for the current Refrigeration Contractor examination. It supports preparation involving refrigeration machinery, system installation, mechanical equipment, piping, safety, and other applicable refrigeration requirements.
• Modern Refrigeration and Air Conditioning, 22nd Edition
  This comprehensive trade reference supports study of refrigeration theory, refrigerants, electrical systems, motors, controls, compressors, condensers, evaporators, receivers, accumulators, expansion devices, dryers, piping, troubleshooting, maintenance, and system operation. Later editions of approved non-code references are allowed under the current PSI rules.
• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  This construction-industry safety reference supports preparation for questions involving personal protective equipment, ladders, toxic materials, safety training, workplace ventilation, lockout/tagout procedures, and related safety requirements.

Test Information and Study Materials

A productive Oklahoma Refrigeration Contractor study plan should follow the official content distribution. Sixty of the 80 trade-exam questions are concentrated in Electrical Knowledge and Controls, Refrigeration Equipment and Components, and Refrigeration Systems Operations.

Prioritize Electrical Knowledge and Controls. Review electrical theory, motors, AC and DC circuits, meters, controls, and relays. Practice connecting electrical symptoms to refrigeration-system performance.

Master Refrigeration Components. Study compressors, condensers, evaporators, valves, receivers, accumulators, expansion devices, and dryers. Understand each component's function and how it interacts with the rest of the system.

Practice System Troubleshooting. Review symptoms, operating conditions, pressures, temperatures, refrigerant flow, electrical operation, and component failures. Contractor-level questions reward an understanding of the entire system.

Review Refrigerants. Study refrigerant types, system applications, refrigerant theory, and the changes that occur throughout the refrigeration cycle.

Study Refrigeration Piping. Review piping supports, materials, sizes, and pressure testing. Understand why correct piping practices affect capacity, reliability, oil return, and system operation.

Use the 2018 International Mechanical Code efficiently. Practice locating refrigeration-related provisions before taking timed practice exams. Familiarity with chapters, tables, and terminology can reduce time spent searching.

Review OSHA safety. Become comfortable locating information on personal protective equipment, ladders, toxic materials, workplace safety, lockout/tagout, and ventilation requirements.

Practice under the 210-minute time limit. Work through 80-question study sessions using the actual examination pace. Answer familiar questions first and preserve time for detailed reference searches.

Separate trade preparation from Business and Law preparation. The refrigeration trade exam emphasizes technical competency, while Mechanical Business and Law focuses on contracting operations such as bidding, contracts, financial management, labor, insurance, bonds, payroll, and licensing.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep helps Oklahoma Refrigeration Contractor candidates organize preparation around the technical subjects and reference materials used for the current licensing examination.

Trade-focused review reinforces refrigeration theory, electrical controls, refrigerants, piping, compressors, condensers, evaporators, metering devices, system operation, maintenance, and troubleshooting. This structure helps experienced professionals identify areas that need additional study before test day.

Reference-navigation preparation helps students become more comfortable working with the 2018 International Mechanical Code, Modern Refrigeration and Air Conditioning, and OSHA regulations during an open-book examination.

Practice-oriented preparation helps candidates build the pacing needed for an 80-question, 210-minute test while learning when to answer from trade knowledge and when to confirm an answer in an approved reference.

1 Exam Prep provides organized study guidance, refrigeration-focused review, electrical and controls preparation, troubleshooting practice, reference navigation, safety review, and confidence-building study structure to support professionals pursuing the Oklahoma Refrigeration Contractor license.

FAQ Section

Who licenses Refrigeration Contractors in Oklahoma?

The Oklahoma Construction Industries Board administers Oklahoma mechanical contractor licensing, including the Refrigeration Contractor classification.

Who administers the Oklahoma Refrigeration Contractor exam?

PSI administers the examination after the Oklahoma Construction Industries Board determines that the applicant is eligible to test.

Is the Oklahoma Refrigeration Contractor exam open book?

Yes. The current Refrigeration Contractor trade examination is open book and permits approved references under current PSI rules.

How many questions are on the Refrigeration Contractor exam?

The current trade examination contains 80 scored questions.

How much time is allowed?

Candidates receive 210 minutes, or three and one-half hours.

What score is required to pass?

The current passing requirement is 70%, which equals 56 correct answers.

What are the largest examination categories?

Electrical Knowledge and Controls, Refrigeration Equipment and Components, and Refrigeration Systems Operations each contain 20 questions.

What code book is used for the Refrigeration Contractor exam?

The current examination uses the 2018 International Mechanical Code with Oklahoma revisions for code-based questions.

Can I use Modern Refrigeration and Air Conditioning, 22nd Edition?

Yes. PSI allows later editions of approved non-code references in the testing area, making the 22nd Edition a later edition of the listed Modern Refrigeration and Air Conditioning reference.

Does an Oklahoma Mechanical Contractor have a Business and Law examination?

Yes. The current Mechanical Business and Law examination contains 50 questions, allows 120 minutes, and requires 70%, or 35 correct answers.

Can I highlight and underline my approved trade references?

Yes. Approved references may be highlighted, underlined, and indexed before the examination.

Are permanent tabs allowed?

Yes. Permanent tabs are allowed. Temporary removable tabs such as Post-it notes are not permitted.

Can I write notes in my examination references?

No. Current testing rules prohibit written notes in approved references before or during the examination.

How much experience is required for an Oklahoma Mechanical Contractor license?

Mechanical contractor applicants must meet the applicable journeyman requirements and complete an additional year of qualifying mechanical trade experience.

What does the Oklahoma Refrigeration Contractor license allow?

The license authorizes qualifying contractors to install, alter, modify, service, maintain, or repair refrigeration products, systems, or equipment, including associated process piping.

What bond and insurance are required for an active Mechanical Contractor?

Current active-contractor requirements include a $5,000 corporate surety bond and at least $50,000 in commercial general liability insurance.

Does Oklahoma require continuing education for Mechanical Contractors?

Yes. Oklahoma mechanical licensees currently complete six hours of approved continuing education every 36 months, subject to applicable licensing rules.

Does this online exam prep course guarantee that I will pass?

No exam-preparation course can guarantee a passing result. This course provides organized refrigeration review, electrical and controls preparation, troubleshooting study, reference navigation, safety review, and practice-oriented preparation to support your examination study.