The 1 Package: All-Inclusive Oklahoma Limited Residential Installer (Mechanical) Contractor Exam, Licensing & Business Setup Solution

The 1 Package combines Oklahoma Limited Residential Installer exam preparation, licensing support, highlighted and tabbed reference materials, and business setup services in one comprehensive solution. It is designed for candidates who want an organized path from preparing for the Limited Residential Installer examination through understanding the additional steps involved in pursuing broader Oklahoma mechanical contracting and establishing a business.

The Oklahoma Limited Residential Installer credential is regulated by the Oklahoma Construction Industries Board. The license allows qualifying individuals to install complete new mechanical systems in new construction for detached one- or two-family dwellings and multiple single-family dwellings, including townhouses, not more than three stories in height with a separate means of egress.

The Limited Residential Installer scope includes cooling systems of 5 tons or less, heating systems of 150,000 Btu/h or less, and related accessories such as humidifiers, filtering systems, kitchen vent hoods, exhaust fans, and clothes dryer vent exhausts. The authorized scope does not include fuel gas piping, welding, soldering, brazing, final connection of refrigerant lines, or final connection of electrical wiring permitted to be installed under Oklahoma law.

The 1 Package includes the technical references used for Limited Residential Installer exam preparation along with Oklahoma mechanical licensing and contractor business references. The business materials support preparation in areas such as licensing requirements, estimating, project management, contracts, financial management, workers’ compensation, liens, insurance, bonds, and other contractor responsibilities.

All included books are highlighted and tabbed to support organized studying and efficient open-book reference navigation. Candidates also receive 1 year of course access, Application Service, Business Formation assistance, EIN Filing with the IRS, and Contractor Compliance Guidance.

Package Price: $2,295 plus a $350 deposit, for a total initial payment of $2,645.

Please allow up to 15 business days for The 1 Package book orders.

Exam Details

The Oklahoma Limited Residential Installer examination is administered by PSI. Candidates first complete the applicable Oklahoma Construction Industries Board application process and receive authorization before proceeding with the examination.

• Exam: Oklahoma Limited Residential Installer
• Number of Questions: 30
• Passing Score: 70%
• Passing Raw Score: 21 correct answers
• Time Allowed: 75 minutes
• Testing Provider: PSI

The examination is divided among 13 residential mechanical subjects:

• Duct Systems: 9 questions
• Vents: 2 questions
• Insulation: 2 questions
• Clothes Dryer: 2 questions
• Range Hoods: 1 question
• Clearances: 1 question
• Access: 3 questions
• Appliance Installation: 2 questions
• Restroom Exhaust Systems: 2 questions
• Combustion Air: 1 question
• Piping: 2 questions
• General Installation: 1 question
• SMACNA Symbols: 2 questions

Duct Systems is the largest individual category, representing 9 of the 30 questions. Candidates should devote meaningful preparation time to duct-related requirements while continuing to review every other subject in the examination outline.

For customers whose goal extends beyond the Limited Residential Installer credential into Oklahoma mechanical contractor licensing, Mechanical Business and Law preparation is also important. The Mechanical Business and Law examination contains 50 questions, requires a 70% passing score with 35 correct answers, and allows 120 minutes.

Business and law topics include bidding and estimating, project management and supervision, contracts, financial matters, labor and personnel, risk management, payroll and payroll taxes, and licensing requirements. The business books included with The 1 Package support preparation in these areas.

Open Book Test

The Oklahoma Limited Residential Installer examination is an open-book test. The examination-room references currently identified for this test are the International Residential Code for One- and Two-Family Dwellings, 2018 edition with Oklahoma revisions and the SMACNA Symbols Sheet.

Candidates are responsible for bringing their permitted references to the examination center. Approved reference materials may be highlighted, underlined, and indexed before testing. Permanent tabs are permitted. Temporary tabs such as Post-it notes are not allowed.

References may not contain candidate-added writing before or during the examination session. Learning how to use the books before test day is therefore an important part of preparation. Candidates should practice identifying the subject of a question, finding the appropriate chapter or section, and locating the applicable requirement efficiently.

With 30 questions and 75 minutes available, the average testing time is approximately two and a half minutes per question. Familiarity with the International Residential Code and SMACNA Symbols Sheet can help reduce unnecessary searching and leave more time for questions requiring closer interpretation.

The Mechanical Business and Law examination used in the Oklahoma mechanical contractor licensing path is also open book. The Oklahoma statutes, regulations, fine schedule, lien law, NASCLA business guide, and workers’ compensation material included with this package support preparation for that examination.

Licensing Steps

The Limited Residential Installer credential and an Oklahoma mechanical contractor license are different licensing levels. The 1 Package supports the Limited Residential Installer exam process while also providing business-law materials and business setup services for customers with broader contractor goals.

1. Review the Limited Residential Installer scope. Confirm that the authorized residential mechanical work matches your intended activities.
2. Meet the applicable qualification requirements. Applicants must satisfy Oklahoma requirements for age and qualifying mechanical experience or an accepted education-and-experience pathway.
3. Submit the appropriate application. Complete the required Oklahoma Construction Industries Board application and supporting documentation.
4. Receive examination approval. The Construction Industries Board determines eligibility for the Limited Residential Installer examination.
5. Schedule the examination through PSI. Approved candidates arrange their examination appointment with the testing provider.
6. Prepare with the approved references. Study the technical content and practice open-book navigation with the 2018 International Residential Code and SMACNA Symbols Sheet.
7. Complete the required Limited Residential Installer examination. Successful completion is part of obtaining the Limited Residential Installer credential.
8. Address separate contractor requirements when applicable. Candidates progressing toward mechanical contractor licensing must meet the additional qualifications associated with the contractor category being pursued.
9. Organize the business setup. The 1 Package includes Business Formation, EIN Filing, Application Service, and Contractor Compliance Guidance to support the administrative side of the customer’s business goals.

State Requirements

The Oklahoma Limited Residential Installer license applies specifically to qualifying new residential construction. It covers complete new mechanical systems for detached one- or two-family dwellings and multiple single-family dwellings, including townhouses, not more than three stories high with a separate means of egress.

The permitted scope includes qualifying cooling systems of 5 tons or less and heating systems of 150,000 Btu/h or less, along with related accessories. The license does not authorize fuel gas piping, welding, soldering, brazing, final refrigerant-line connections, or final electrical connections that fall outside the Limited Residential Installer scope.

Candidates whose business goals include operating at the Oklahoma mechanical contractor level must satisfy the separate contractor requirements established by the Construction Industries Board. Active mechanical contractors are subject to state insurance requirements and applicable contractor bond requirements. Business formation by itself does not replace the required trade license or contractor qualification process.

The business setup services included with The 1 Package are intended to help customers organize the entity, federal tax identification, and contractor-compliance portions of their broader business plan alongside licensing preparation.

Reference Books

• International Residential Code for One- and Two-Family Dwellings, 2018
  Included Book: The primary residential code reference for the Limited Residential Installer examination. Candidates should become familiar with mechanical requirements involving ducts, ventilation, insulation, appliance installation, exhaust systems, access, piping, combustion air, and related residential topics.
• SMACNA Symbols Sheet
  Included Book: The permitted technical reference used for questions involving SMACNA symbols. The Limited Residential Installer examination includes questions specifically assigned to this subject.
• Oklahoma Mechanical Licensing Act, Oklahoma Statutes, Title 59, Chapter 43A
  Included Book: Covers Oklahoma statutory provisions governing mechanical licensing and responsibilities within the regulated mechanical industry.
• Oklahoma Mechanical Industry Regulations, Oklahoma Administrative Code, Title 158, Chapter 50
  Included Book: Contains Oklahoma administrative rules governing mechanical classifications, qualifications, licensing responsibilities, contractors, apprentices, firms, and related requirements.
• Oklahoma Fine Schedule of the Construction Industries Board, Oklahoma Administrative Code, Title 158, Chapter 10
  Included Book: Supports preparation for compliance and enforcement topics involving the Oklahoma Construction Industries Board.
• Oklahoma Lien Law, Oklahoma Statutes, Title 42, Chapter 3
  Included Book: Provides Oklahoma statutory material concerning construction liens and supports contractor business-law preparation.
• NASCLA Contractors Guide to Business, Law and Project Management, Basic 14th Edition
  Included Book: Supports preparation in estimating, project management, contracts, business organization, financial management, labor, risk management, insurance, bonds, and other contractor business topics.
• Oklahoma Workers’ Compensation Act, Oklahoma Statutes, Title 85A, Chapter 1
  Included Book: Supports preparation for Oklahoma workers’ compensation, labor, personnel, and employer-responsibility topics associated with contractor business and law study.

All included books are highlighted and tabbed. Regular use of the prepared references helps students become familiar with their organization and develop more efficient reference-navigation habits.

Test Information and Study Materials

Preparation for the Limited Residential Installer examination should combine technical understanding with open-book navigation practice. Duct systems deserve additional attention because they represent the largest portion of the current content outline, but candidates should also prepare for vents, insulation, clothes dryer exhaust, range hoods, clearances, access, appliance installation, restroom exhaust systems, combustion air, piping, general installation, and SMACNA symbols.

Use the International Residential Code regularly during study. Practice identifying keywords in a question, using the index and tabs, navigating to the appropriate section, and interpreting the applicable requirement. The goal is to make reference research a familiar process rather than something attempted for the first time during the examination.

For SMACNA symbols, review the Symbols Sheet repeatedly and learn how the information is arranged. Symbol questions can be handled more efficiently when candidates already recognize the reference layout.

Customers continuing toward contractor licensing can separately organize Business and Law study around bidding, estimating, project management, contracts, financial management, workers’ compensation, insurance, bonds, payroll, liens, licensing requirements, and Oklahoma mechanical regulations. This keeps technical trade preparation and contractor-business preparation organized without confusing the reference lists for the two examinations.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep supports candidates through organized study guidance, trade-focused review, practice-oriented preparation, reference navigation, and a structured approach to licensing preparation. The 1 Package adds business setup services for customers whose goals extend beyond exam preparation.

Highlighted and tabbed books help organize the reference material, while 1 year of course access gives candidates time to revisit challenging topics, practice reference navigation, and build greater familiarity with the technical and business-law subjects.

Application Service is included to support the licensing application process. Business Formation assistance helps establish an LLC or corporation, while EIN Filing with the IRS helps obtain the Employer Identification Number commonly used for business banking, taxes, employment, and other business functions.

Contractor Compliance Guidance helps customers understand requirements relevant to their Oklahoma contracting goals, including applicable licensing, insurance, bond, and business responsibilities. These services complement exam preparation without replacing the requirements established by the state licensing authority.

Together, the course, prepared books, application support, and business services create an organized solution for candidates preparing for the Oklahoma Limited Residential Installer examination while planning the next stages of their mechanical trade and business goals.

What is included in The 1 Package?

The package includes the listed highlighted and tabbed books, 1 year of course access, Application Service, Business Formation assistance for an LLC or corporation, EIN Filing with the IRS, and Contractor Compliance Guidance.

How much does The 1 Package cost?

The package price is $2,295 plus a $350 deposit, for a total initial payment of $2,645.

How long should I allow for The 1 Package book order?

Please allow up to 15 business days for The 1 Package book orders.

Are all included books highlighted and tabbed?

Yes. All books included with The 1 Package are highlighted and tabbed to support organized studying and efficient reference navigation.

Is the Oklahoma Limited Residential Installer exam open book?

Yes. The examination is open book. The permitted exam-room references are the International Residential Code for One- and Two-Family Dwellings, 2018 edition with Oklahoma revisions and the SMACNA Symbols Sheet.

How many questions are on the Limited Residential Installer exam?

The examination contains 30 questions. Candidates need a 70% passing score, or 21 correct answers, and have 75 minutes to complete the exam.

Are the business books taken into the Limited Residential Installer exam?

The Limited Residential Installer exam-room reference list consists of the 2018 International Residential Code with Oklahoma revisions and the SMACNA Symbols Sheet. The additional business books support Oklahoma mechanical business, law, licensing, and broader contractor preparation.

Does the package include business formation?

Yes. Business Formation assistance for an LLC or corporation is included as part of The 1 Package.

Does the package include EIN filing?

Yes. EIN Filing with the IRS is included. The EIN can support business banking, applicable tax administration, hiring employees, and other business operations.

Is Application Service included?

Yes. Application Service is included with The 1 Package to support the licensing application process.

Does The 1 Package include contractor compliance guidance?

Yes. Contractor Compliance Guidance is included to help customers understand applicable Oklahoma licensing, insurance, bond, and business compliance requirements connected with their contracting goals.