Oklahoma HVACR Limited Journeyman  Contractor - Online Exam Prep Course

Prepare for the Oklahoma HVACR Limited Journeyman examination with an online exam prep course focused on electrical knowledge and controls, natural gas systems, air distribution, refrigeration and air conditioning, heating systems, hydronics, system troubleshooting, installation, maintenance, code navigation, mechanical calculations, and workplace safety. This preparation is designed for mechanical professionals pursuing the Oklahoma HVAC/R Limited Journeyman license through the Oklahoma Construction Industries Board.

The Oklahoma HVAC/R Limited Journeyman classification covers a broad range of heating, ventilation, air conditioning, refrigeration, sheet metal, and natural gas work while establishing specific limits on cooling and heating equipment capacity. A licensed HVAC/R Limited Journeyman may work on cooling systems with a capacity of no more than 25 tons and heating equipment with a heat input of no more than 500,000 Btu/h per appliance, along with sheet metal, natural gas piping, and refrigeration work permitted within the license scope.

The current Oklahoma HVACR Journeyman Limited examination is administered by PSI after the Oklahoma Construction Industries Board determines that the applicant meets the qualification requirements to test. The exam contains 60 scored questions, provides 180 minutes, and requires a minimum passing score of 70%. Candidates currently need 42 correct answers to meet the passing standard.

The examination requires more than code-book familiarity. Candidates should understand electrical controls, motors, refrigeration theory, equipment operation, natural gas piping, duct systems, ventilation, heating systems, combustion air, hydronics, troubleshooting, and safe work practices. Trade knowledge and general industry practices may also appear on the examination.

This Oklahoma HVACR Limited Journeyman online exam prep course is organized around the primary study references provided for this product: the International Mechanical Code, 2018, International Fuel Gas Code, 2018, Modern Refrigeration and Air Conditioning, 22nd Edition, Mathematics for Plumbers and Pipefitters, 8th Edition, and Code of Federal Regulations - 29 CFR Part 1926 (OSHA).

Exam Details

The Oklahoma HVACR Journeyman Limited examination tests knowledge of the installation, maintenance, repair, fabrication, alteration, and extension of air conditioning, refrigeration, heating, and ventilation systems, including ductwork within a complete system subject to the Limited classification’s equipment-capacity restrictions.

The current examination contains 60 questions. Candidates receive 180 minutes, or three hours, to complete the exam. The minimum passing score is 70%, which equals 42 correct answers.

Electrical Knowledge and Controls is the largest individual content category with 15 questions. Subjects include general electrical theory, motors, DC circuits, AC circuits, and controls. Candidates should understand how electrical components interact with HVAC/R equipment and how control-system problems affect equipment operation.

Natural Gas contains nine questions. Topics include piping valves, connectors, accessories, hangers and supports, gas-pipe sizing, materials, testing, installation, and assembly. Candidates should become comfortable navigating the International Fuel Gas Code and applying gas-piping requirements.

Air Distribution Systems contains 10 questions. The exam outline includes duct definitions, sizing and design, duct assembly and installation, hangers and supports, duct materials and shapes, insulation, fire and smoke control, hoods and exhaust systems, testing and balancing, ventilation requirements, plans, and symbols.

Refrigeration and Air Conditioning Systems contains 13 questions. Subjects include refrigeration theory, refrigerants, equipment sizing and design, equipment and components, piping, installation, system operation, troubleshooting, and maintenance.

Heating Systems contains 10 questions. Candidates should prepare for heating theory and system types, combustion air, vents and chimneys, equipment sizing, heating equipment, equipment installation, troubleshooting, maintenance, hydronics, and hydronic piping.

Safety contains three questions. Subjects include responsibility for PPE, safety training, employee ventilation, first-aid requirements, personal protective equipment, material safety information, work around toxic materials, fall protection, lockout/tagout, ladders, and scaffolds.

Open Book Test

The Oklahoma HVACR Limited Journeyman examination is an open-book test. Candidates are responsible for bringing the approved references they plan to use during the examination.

The current code references include the 2018 International Mechanical Code with Oklahoma revisions and the 2018 International Fuel Gas Code with Oklahoma revisions. Code questions are based on the specific editions identified for the examination.

The current PSI reference list identifies earlier editions of Modern Refrigeration and Air Conditioning and permits later editions of non-code references in the test area. The 22nd Edition provided with this product is a later edition of that approved non-code reference.

Mathematics for Plumbers and Pipefitters, 8th Edition and 29 CFR Part 1926 OSHA are also approved references for the current examination.

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

Written notes may not be placed in approved references before the examination, and candidates may not write in those references during the test. Additional loose papers are also prohibited.

Downloaded references must be properly secured. Current rules allow acceptable downloaded materials when spiral bound, hole-punched and placed in a binder, or stapled in the permitted manner.

A silent, non-printing, non-programmable calculator may be used. With 60 questions in 180 minutes, candidates average three minutes per question. Good preparation should focus on knowing where information is located instead of searching every reference from the beginning for each question.

Licensing Steps

1. Begin gaining qualifying mechanical experience. Work within Oklahoma’s mechanical licensing structure under the supervision or employment arrangement required by state law.
2. Register as a mechanical apprentice when required. Oklahoma experience intended to count toward licensing generally must be supported by proper apprentice registration unless an applicable lawful exception applies.
3. Gain HVAC/R Limited experience. Develop experience involving air conditioning, refrigeration, heating, ventilation, ductwork, natural gas piping, and related mechanical systems within the Limited classification.
4. Complete the required experience. The standard journeyman pathway requires three years of verifiable mechanical experience in the category being pursued.
5. Use qualifying mechanical education when applicable. Oklahoma recognizes approved education-and-experience combinations that can satisfy portions of the journeyman qualification requirement.
6. Maintain supporting documentation. Keep apprentice registration records, employment verification, school transcripts, and other materials needed to document eligibility.
7. Submit the Mechanical License Application. Apply through the Oklahoma Construction Industries Board for HVAC/R Limited Journeyman examination approval.
8. Receive authorization to test. The Board evaluates the application before permitting the candidate to schedule the examination.
9. Schedule through PSI. After approval, select an examination date and testing location through PSI.
10. Prepare your references. Organize the 2018 IMC, 2018 IFGC, refrigeration reference, mathematics book, and OSHA material according to current examination-room rules.
11. Take the HVACR Journeyman Limited examination. Complete all 60 scored questions within the 180-minute limit.
12. Reach the required passing score. Candidates currently need 70%, or 42 correct answers.
13. Complete license issuance. Follow the Oklahoma Construction Industries Board process after satisfying examination and licensing requirements.

State Requirements

Applicants for an Oklahoma mechanical journeyman license must be at least 18 years old.

The standard qualification pathway requires three years of verifiable mechanical trade experience in the category for which the applicant is applying. Oklahoma defines one year of verifiable mechanical experience as 2,000 hours.

Experience used toward licensing generally consists of mechanical work performed while employed by a licensed Mechanical Contractor or through another method accepted under Oklahoma mechanical licensing rules. Qualifying military experience may also be considered.

Experience obtained in Oklahoma generally must be supported by appropriate apprentice registration unless an applicable lawful exemption applies. Maintaining accurate registration and employment records is therefore important throughout the apprenticeship period.

Oklahoma recognizes approved mechanical education as part of several alternative qualification pathways. An approved program containing at least 1,000 hours can be combined with one year of qualifying experience, while a program containing at least 500 hours can be combined with two years of experience. Other approved education-and-experience combinations are recognized under state rules.

The HVAC/R Limited Journeyman license authorizes the license holder to install, alter, modify, service, maintain, or repair cooling products, systems, or equipment including process piping with a cooling capacity of no more than 25 tons.

The license also covers heating equipment and associated process piping with a heat input of no more than 500,000 Btu/h per appliance. In addition, the classification covers sheet metal, natural gas piping, and refrigeration within the authorized scope.

These limits distinguish the HVAC/R Limited classification from the HVAC/R Unlimited classification. Mechanical work exceeding the Limited equipment-capacity restrictions requires the appropriate Unlimited licensing.

A licensed journeyman performs authorized work while employed by the appropriate licensed Mechanical Contractor. Journeyman licensing does not independently authorize the individual to operate as a Mechanical Contractor.

Oklahoma mechanical journeymen and contractors currently must complete six hours of approved continuing education during the 36 months preceding license expiration, subject to applicable licensing rules and exemptions.

If a candidate does not pass the examination on the first attempt, current Oklahoma testing rules require a 30-day waiting period before retesting. For subsequent failures of non-electrical examinations, the waiting period is generally 90 days.

Reference Books

• International Mechanical Code, 2018
  The 2018 International Mechanical Code with Oklahoma revisions supports preparation involving mechanical equipment, air distribution, ductwork, ventilation, refrigeration, heating, hydronics, exhaust systems, and other applicable mechanical-code requirements.
• International Fuel Gas Code, 2018
  The 2018 International Fuel Gas Code with Oklahoma revisions supports preparation involving natural gas piping, valves, connectors, supports, sizing, materials, testing, installation, combustion air, and related gas-system requirements.
• Modern Refrigeration and Air Conditioning, 22nd Edition
  This HVAC/R trade reference supports preparation involving refrigeration theory, refrigerants, electrical systems, controls, motors, air conditioning, heating, system components, equipment sizing, installation, troubleshooting, maintenance, and service.
• Mathematics for Plumbers and Pipefitters, 8th Edition
  This trade mathematics reference supports preparation for mechanical calculations involving dimensions, piping, measurements, offsets, and other quantitative applications used in HVAC/R work.
• Code of Federal Regulations - 29 CFR Part 1926 (OSHA)
  This construction-safety reference supports preparation involving PPE, fall protection, hazardous materials, ladders, scaffolds, lockout/tagout, ventilation, training, and other workplace-safety requirements.

Test Information and Study Materials

A productive Oklahoma HVACR Limited Journeyman study plan should follow the official exam weighting. Electrical Knowledge and Controls, Refrigeration and Air Conditioning Systems, Air Distribution Systems, and Heating Systems account for most of the examination.

Prioritize Electrical Knowledge and Controls. With 15 questions, this is the largest category. Review electrical theory, AC and DC circuits, motors, controls, relays, contactors, and how electrical faults can affect HVAC/R operation.

Study Refrigeration and Air Conditioning Systems. Review refrigeration theory, refrigerants, equipment sizing, components, piping, installation, system operation, troubleshooting, and maintenance.

Strengthen Air Distribution knowledge. Practice duct sizing, design, materials, shapes, supports, insulation, fire and smoke control, exhaust systems, testing, balancing, ventilation, plans, and symbols.

Review Heating Systems. Study heating theory, combustion air, vents, chimneys, equipment sizing, system components, hydronic piping, installation, operation, and troubleshooting.

Practice Natural Gas code navigation. Review valves, connectors, accessories, hangers, sizing, materials, testing, and installation. Become comfortable using the 2018 IFGC efficiently.

Know the license limits. Remember the 25-ton cooling limit and 500,000 Btu/h-per-appliance heating limit. Understanding the license scope is important both for exam preparation and for working legally after licensing.

Use the refrigeration reference actively. Study diagrams, electrical controls, system cycles, equipment operation, troubleshooting information, and heating and cooling theory rather than relying only on code searches.

Practice mechanical mathematics. Work through piping measurements, dimensions, offsets, and other calculations using Mathematics for Plumbers and Pipefitters.

Review OSHA safety. Know where to locate PPE, fall protection, lockout/tagout, ventilation, hazardous-material, ladder, and scaffold requirements.

Complete timed practice sessions. Use the three-hour examination limit as your benchmark. Practice answering known questions quickly and returning later to questions requiring more detailed reference searches.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep helps Oklahoma HVACR Limited Journeyman candidates organize preparation around the technical categories and references used for the current licensing examination.

Trade-focused review supports stronger understanding of electrical controls, air distribution, refrigeration, heating, natural gas piping, hydronics, equipment operation, and troubleshooting. Organized preparation can help candidates identify weak areas before test day rather than studying every subject equally.

Reference-navigation preparation helps students become more comfortable using the 2018 International Mechanical Code, 2018 International Fuel Gas Code, Modern Refrigeration and Air Conditioning, Mathematics for Plumbers and Pipefitters, and OSHA regulations.

Practice-oriented preparation helps candidates build a steady pace for the 60-question, three-hour examination while learning when to answer from trade knowledge and when to verify information in an approved reference.

1 Exam Prep provides organized study guidance, HVAC/R-focused review, electrical and controls preparation, refrigeration study, fuel-gas review, mechanical calculations, safety preparation, and confidence-building study structure to support professionals working toward the Oklahoma HVAC/R Limited Journeyman license.

FAQ Section

Who licenses HVACR Limited Journeymen in Oklahoma?

The Oklahoma Construction Industries Board administers mechanical licensing, including the HVAC/R Limited Journeyman classification.

Who administers the Oklahoma HVACR Limited Journeyman exam?

PSI administers the examination after the Oklahoma Construction Industries Board approves the applicant’s eligibility.

Is the Oklahoma HVACR Limited Journeyman exam open book?

Yes. The current examination is open book and permits approved references under PSI testing rules.

How many questions are on the exam?

The current examination contains 60 scored questions.

How much time is allowed?

Candidates currently receive 180 minutes, or three hours.

What score is required to pass?

The current passing requirement is 70%, which equals 42 correct answers.

What is the largest exam category?

Electrical Knowledge and Controls is the largest category with 15 questions.

How many Refrigeration and Air Conditioning questions are on the exam?

The current examination contains 13 questions in Refrigeration and Air Conditioning Systems.

What code books are used for the exam?

The current examination uses the 2018 International Mechanical Code and 2018 International Fuel Gas Code with Oklahoma revisions.

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

Yes. Current PSI rules permit later editions of approved non-code references, making the 22nd Edition a later edition of the listed Modern Refrigeration and Air Conditioning reference.

Can I highlight and underline my references?

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

Are permanent tabs allowed?

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

Can I write notes in my exam books?

No. Written notes are prohibited in approved reference materials before and during the examination.

How much experience is required for an Oklahoma HVACR Limited Journeyman license?

The standard qualification pathway requires three years of verifiable mechanical experience in the applicable category. Oklahoma also recognizes approved education-and-experience combinations.

What is the cooling limit for an HVACR Limited Journeyman?

The Limited classification covers cooling products, systems, and equipment with a cooling capacity of no more than 25 tons.

What is the heating limit for an HVACR Limited Journeyman?

The Limited classification covers heating equipment with a heat input of no more than 500,000 Btu/h per appliance.

Does the HVACR Limited license include natural gas piping and refrigeration?

Yes. The authorized Limited classification includes sheet metal, natural gas piping, and refrigeration in addition to qualifying cooling and heating systems.

Can an HVACR Limited Journeyman work independently as a Mechanical Contractor?

No. A journeyman performs authorized work while employed by the appropriate licensed Mechanical Contractor. Separate contractor licensing is required to operate as a Mechanical Contractor.

Does Oklahoma require continuing education for HVACR Limited Journeymen?

Yes. Oklahoma mechanical journeymen currently must complete six hours of approved continuing education during the 36 months preceding license expiration.

What happens if I fail the examination?

Current Oklahoma testing rules require a 30-day waiting period after the first failed attempt. Subsequent failures generally require a 90-day waiting period before another attempt.

Does this online exam prep course guarantee a passing score?

No exam-preparation course can guarantee a passing result. This course provides organized HVAC/R review, electrical and controls preparation, refrigeration study, code navigation, natural gas preparation, mathematics practice, safety review, and structured exam-focused study to support your preparation.