Connecticut Limited Heating, Hot Water and Steam Contractor (S-5) Highlighted & Tabbed Books Allowed into Exam Package

Prepare for the Connecticut Limited Heating, Hot Water and Steam Contractor (S-5) examination with the approved trade references prepared for organized open-book use. This package includes the International Mechanical Code, 2021 and Modern Refrigeration and Air Conditioning, 22nd Edition, with both books highlighted and permanently tabbed to support focused study and faster reference navigation.

The Connecticut S-5 examination focuses on limited hot-water and steam heating work. Candidates should understand piping, heating equipment, boilers, controls, insulation, maintenance, testing, and general trade principles. They must also be able to locate code provisions, technical explanations, equipment information, definitions, diagrams, and tables within a timed testing environment.

This package is specifically designed for candidates who need the books allowed into the S-5 trade examination. It does not include supplemental hydronic heating books, pipefitting handbooks, online course access, application assistance, rental services, or the separate Connecticut contractor Business and Law examination reference.

Both included books are highlighted and tabbed before delivery. Important chapters, definitions, mechanical requirements, equipment subjects, piping topics, controls, testing information, and commonly reviewed technical material are marked to provide a practical starting point for preparation.

Highlighted and tabbed books can make major topics easier to locate, but candidates should still study the material thoroughly. A prepared reference is most useful when the candidate understands the tab labels, has reviewed the highlighted passages, and knows how each section relates to the published examination content.

The S-5 trade examination is open book, making reference familiarity an important part of exam preparation. Candidates who begin using the books early can practice selecting the correct reference, finding the relevant chapter, using the index, and reviewing the complete supporting material before choosing an answer.

Field experience provides an important technical foundation, but written examination questions may present familiar concepts through formal code language or textbook terminology. Studying with the approved references helps candidates connect practical heating knowledge with the wording and organization used in the examination.

Please allow up to 15 business days for tabbed and highlighted books allowed into exam package orders.

What You Get

This focused package contains only the two listed trade references. Both books are prepared to support organized review of the Connecticut S-5 examination subjects and use during the open-book testing session.

Exam Details

The Connecticut Limited Heating, Hot Water and Steam Contractor (S-5) trade examination contains 40 questions. Candidates are allowed 1½ hours to complete the examination, and a minimum score of 70 percent is required to pass.

The published S-5 examination content outline includes the following categories:

• Insulation: 1 question
• General Knowledge: 4 questions
• Controls: 5 questions
• Equipment: 8 questions
• Piping: 17 questions
• Maintenance and Testing: 5 questions

Piping is the largest examination category, accounting for 17 of the 40 questions. Candidates should give substantial attention to piping materials, fittings, joining methods, valves, supports, insulation, expansion, circulation, system layouts, flow, pressure, and the movement of hot water or steam through a heating system.

Equipment is the second-largest category. Preparation may involve boilers, pumps, circulators, expansion tanks, air-control devices, heat exchangers, terminal units, control valves, safety devices, and other components used in hot-water and steam heating installations.

The controls category may include thermostats, aquastats, pressure controls, relays, operating limits, safety controls, valves, and equipment sequences. Candidates should understand how controls start, stop, regulate, and protect heating equipment.

Maintenance and testing questions may address equipment inspection, system startup, pressure testing, temperature measurements, preventive maintenance, troubleshooting, and recognition of unsafe or inefficient operating conditions.

General knowledge questions may involve heating-system operation, accepted trade practices, equipment relationships, piping principles, and contractor-level understanding. Insulation questions may address installation, heat loss, system efficiency, protection, or the application of insulating materials.

With 90 minutes available for 40 questions, candidates have an average of approximately two minutes and fifteen seconds per question. This time includes reading the question, identifying the subject, choosing the appropriate book, locating the information, and selecting an answer.

Connecticut contractor candidates may also be required to complete the applicable Business and Law examination. That test is separate from the S-5 trade examination and uses a separate approved business reference that is not included in this package.

Open Book Test

The Connecticut S-5 Limited Heating, Hot Water and Steam Contractor examination is an open-book test. Candidates may bring approved references into the testing center under the applicable examination rules.

The International Mechanical Code, 2021 and Modern Refrigeration and Air Conditioning, 22nd Edition are the S-5 trade references included in this package for exam-room use. Both books arrive highlighted and permanently tabbed.

Approved examination references may be highlighted, underlined, annotated, and indexed before the test. Permanent tabs may be used to identify chapters, definitions, tables, equipment subjects, piping topics, controls, testing information, and other important material.

Temporary tabs, removable notes, loose papers, and inserted pages are not permitted. Candidates may not write in their books during the examination, and questions or answers may not be recorded inside the approved references.

The included highlighting directs attention to useful code and technical material, while the permanent tabs provide an organized navigation structure. Candidates should review every tab before exam day and understand the subjects associated with each marked location.

A practical open-book strategy begins with identifying the type of question. A code-based question involving boilers, mechanical equipment, piping, insulation, installation requirements, testing, or system safety may lead to the International Mechanical Code.

A technical question involving heating principles, equipment operation, controls, components, maintenance, testing, or troubleshooting may be supported by Modern Refrigeration and Air Conditioning.

Candidates should use the permanent tabs together with the index, table of contents, chapter headings, diagrams, and technical tables. Not every possible question can be represented by a single tab, so familiarity with index terminology remains important.

Reading the complete supporting section is essential. Definitions, exceptions, notes, table headings, and surrounding provisions may affect the correct response. Candidates should avoid choosing an answer based only on an isolated sentence or highlighted phrase.

Licensing Steps

1. Review the S-5 license scope. Confirm that the Connecticut Limited Heating, Hot Water and Steam Contractor classification matches the services you intend to provide.
2. Meet the qualifying experience requirement. Establish the applicable properly licensed journeyperson experience or equivalent experience and training accepted by Connecticut.
3. Gather supporting records. Prepare license history, employment verification, apprenticeship documentation, classroom records, and other qualification materials required for the application pathway.
4. Complete the contractor application. Submit the applicable application and supporting information to the Connecticut Department of Consumer Protection.
5. Receive examination eligibility. The state reviews the applicant’s qualifications and determines whether the candidate may proceed to testing.
6. Prepare for the S-5 trade examination. Study the highlighted and tabbed references, review the examination outline, and practice locating information under timed conditions.
7. Prepare for Business and Law. Obtain the separate Connecticut contractor business reference and prepare for the applicable Business and Law examination.
8. Schedule the required examinations. Follow the testing provider’s registration and scheduling procedures after eligibility is granted.
9. Complete the examinations. Pass the applicable S-5 trade and contractor Business and Law examination portions.
10. Complete license issuance requirements. Submit any remaining documents, examination results, and licensing fees according to Connecticut’s instructions.

Passing the trade examination does not automatically issue the contractor license. Applicants must complete Connecticut’s experience, application, examination, documentation, and license-issuance requirements.

State Requirements

The Connecticut S-5 credential is a limited contractor license for qualifying hot-water and steam heating work. The classification focuses on heating equipment, related piping, controls, insulation, maintenance, testing, and system operation within the scope established by Connecticut.

The S-5 classification does not provide unlimited authority to perform every type of heating, cooling, refrigeration, fuel gas, oil burner, piping, or air-conditioning service. Contractors must remain within the authorized scope and obtain any additional Connecticut credential required for work outside that scope.

Applicants must establish qualifying trade experience before becoming eligible for the contractor examination. Connecticut may review license history, supervised employment, apprenticeship completion, classroom instruction, and other supporting documentation.

Applicants using an equivalent experience or education pathway may be required to provide detailed records describing the type and duration of their training. The Connecticut Department of Consumer Protection determines whether submitted qualifications satisfy the applicable licensing requirements.

Contractor candidates may need to complete both the S-5 trade examination and the applicable Business and Law examination. The business examination addresses contractor responsibilities beyond technical heating work, including business organization, contracts, project administration, financial management, safety, and employment responsibilities.

The occupational contractor license and the contractor’s business entity serve different purposes. Holding an S-5 license does not eliminate business registration, tax, insurance, permit, or local requirements that may apply to a contracting operation.

Reference Books

• International Mechanical Code, 2021
  This approved exam-room code covers mechanical systems, boilers, equipment installation, piping, insulation, controls, testing, and related safety requirements. The included copy is highlighted and permanently tabbed to support organized code study and more efficient navigation.
• Modern Refrigeration and Air Conditioning, 22nd Edition
  This approved technical reference supports preparation involving heating principles, equipment, controls, system operation, inspection, maintenance, testing, and troubleshooting. The included copy is highlighted and permanently tabbed.

The books should be used throughout preparation rather than saved only for exam day. Repeated use helps candidates learn chapter locations, common index terms, diagram placement, table organization, and the subjects associated with each permanent tab.

Exam Room Approved Books

The following highlighted and tabbed references are included for use during the Connecticut S-5 trade examination:

• International Mechanical Code, 2021
  Use this code for questions involving boilers, mechanical equipment, piping, insulation, installation requirements, controls, testing, and system safety.
• Modern Refrigeration and Air Conditioning, 22nd Edition
  Use this reference for technical questions involving heating principles, equipment, controls, system components, operation, maintenance, testing, and troubleshooting.

Both books are included specifically for preparation and approved open-book use during the S-5 trade examination. Candidates are responsible for bringing their own references to the testing center.

The examination center does not provide each candidate with a personal set of books. Candidates should inspect their references before test day and make sure all markings and tabs comply with the applicable testing rules.

The included preparation service uses permanent tabs rather than temporary or removable markers. Candidates should not add loose notes, inserted sheets, or removable materials that could conflict with examination-center requirements.

Test Information and Study Materials

A productive S-5 study plan should begin with piping because it represents 17 of the 40 examination questions. Review piping materials, fittings, joining methods, supports, valves, insulation, expansion, circulation, flow, pressure, and system layouts.

Candidates should understand the differences between hot-water and steam systems. Study how water, steam, and condensate move through their respective systems, how circulation occurs, and how piping arrangements affect system performance.

Equipment accounts for eight questions. Review boilers, pumps, circulators, expansion tanks, air separators, heat exchangers, terminal units, control valves, and other components used in hot-water and steam systems.

Controls and maintenance each account for five questions. Candidates should understand thermostats, aquastats, pressure controls, relays, operating limits, safety devices, valves, equipment sequences, inspection procedures, testing, preventive maintenance, and troubleshooting.

Use the International Mechanical Code to review formal mechanical requirements. Pay attention to definitions, tables, exceptions, equipment provisions, piping rules, installation requirements, and testing procedures.

Use Modern Refrigeration and Air Conditioning to reinforce heating principles, equipment functions, controls, system operation, maintenance, and troubleshooting. Review component relationships and operating sequences rather than relying only on isolated definitions.

During timed practice, identify the likely reference before opening a book. Use the permanent tabs to reach a major subject, then use the index, table of contents, chapter headings, and diagrams to locate the precise information.

Review missed practice questions carefully. Locate the applicable code provision or technical explanation, determine why the original answer was incorrect, and review related concepts that may appear in a differently worded question.

Candidates should also practice deciding when to continue searching and when to move to another question. Spending too much time on one difficult item can reduce the time available for questions that can be answered more efficiently.

How 1 Exam Prep Helps You Reach Your Goal

1 Exam Prep helps Connecticut S-5 contractor candidates begin their preparation with the approved trade books organized for practical open-book study. Both references are highlighted and permanently tabbed to create a clear starting point for technical review and navigation practice.

Trade-focused preparation helps candidates connect the examination categories with the appropriate reference. The International Mechanical Code supports code-based mechanical requirements, while Modern Refrigeration and Air Conditioning reinforces heating principles, equipment, controls, operation, maintenance, and troubleshooting.

The highlighting draws attention to useful provisions and technical material. Permanent tabs help candidates move between major subjects, chapters, definitions, tables, and frequently reviewed sections more efficiently.

Reference-navigation practice can help candidates manage the 1½-hour examination period. Familiarity with indexes, chapter layouts, tab locations, definitions, diagrams, and tables can reduce unnecessary searching and create a more organized exam approach.

Practice-oriented preparation also helps identify weaker subjects before test day. Candidates can direct additional study toward piping, equipment, controls, insulation, maintenance, testing, or general heating knowledge based on their practice results.

No highlighted and tabbed book package can guarantee examination eligibility, a passing score, application approval, or contractor license issuance. Consistent study, qualifying experience, familiarity with the references, and effective time management remain important parts of the Connecticut S-5 licensing process.

FAQ Section

What books are included in this package?

The package includes the International Mechanical Code, 2021 and Modern Refrigeration and Air Conditioning, 22nd Edition.

Are both books highlighted and tabbed?

Yes. Both books are highlighted and permanently tabbed before delivery.

How long should I allow for my order?

Please allow up to 15 business days for tabbed and highlighted books allowed into exam package orders.

Are both books allowed into the S-5 examination?

Yes. The International Mechanical Code and Modern Refrigeration and Air Conditioning are the approved S-5 trade references included for exam-room use.

Is the Connecticut S-5 examination open book?

Yes. Candidates may bring approved references into the testing center under the applicable examination rules.

How many questions are on the S-5 examination?

The S-5 trade examination contains 40 questions. Candidates have 1½ hours to complete the test and must earn a minimum score of 70 percent.

What is the largest examination category?

Piping is the largest category, accounting for 17 of the 40 examination questions. Equipment is the second-largest category with eight questions.

Does the package include supplemental study books?

No. This package is limited to the two highlighted and tabbed books allowed into the S-5 trade examination.

Does the package include online course access?

No. This product contains highlighted and tabbed reference books only and does not include an online course.

Is the Business and Law book included?

No. The contractor Business and Law examination uses a separate reference that is not included in this S-5 trade package.

Does purchasing this package guarantee a contractor license?

No. Applicants must meet Connecticut’s qualification requirements, receive examination eligibility, pass the required examinations, complete the application process, and receive state approval.