C-4 Boiler, Hot Water Heating & Steam Fitting Contractor Exam Prep Course

Pass the C-4 Trade Exam: Easy as 1-2-3!

Step 1: Commit to passing your California C-4 Contractor exam. Prepare for your exam at HOME and on your schedule. Utilize our multimedia resources to: “Read, Listen, Watch, Learn, and Pass!”

Step 2: CSLB Application Assistance: We’re here to help you complete your C-4 application correctly. Call us for personalized guidance and ensure a smooth application process.

Step 3: Study and Succeed – Proven Results: Our clients typically pass their trade exam on the first attempt. Your success is our goal. “Follow the Plan and Pass Your Exam!”

All qualifying individuals must also pass the California Contractor Law & Business Exam (sold separately below)


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🎯 Pass Your C-4 Contractor (Trade Exam)

  • Aim to Pass: Aim to pass the C-4 Boiler, Hot Water Heating & Steam Fitting Contractor exam on your very first try.
  • Unbeatable Course: Experience California’s most effective & affordable C-4 contractors’ license course.
  • Proven Track Record: Our clients consistently pass their C-4 contractor trade exams, making us a trusted choice for exam preparation.

Pass your C-4 Boiler, Hot Water Heating & Steam Fitting Contractor exam:

Online Flexible Study Plan:

  • Comprehensive Manual: Dive into our industry-leading C-4 Boiler, Hot Water Heating & Steam Fitting exam preparation manual.
  • Master Multiple-Choice: Learn strategies to dominate multiple-choice exams.
  • Multimedia Learning: Engage with audio and video content featuring industry experts on Math Review and Title 8 Health & Safety Rules.
  • Question Bank: Access hundreds of researched exam questions and answers.
  • Interactive Tools: Use virtual flashcards and non-graded quizzes to reinforce key concepts.
  • Online Practice Exams: Test your knowledge with online timed practice exams.
  • First-Time Success: Aim to pass your C-4 Contractor exam on your first attempt.

🌟 The Most Effective Course in California at any price!

  • Online Advantage: Our multimedia course allows you to study at your pace and is the most affordable method for passing the C-4 Contractor License Exam.

Hassle-Free Application Process:

  • Paperwork Assistance: We’ll guide you through the CSLB application process.
  • Expert Help: Email us for personalized assistance and a free line-by-line review of your application before submission to the state. TLC is here to help to make your CSLB Application easier than ever!

Exam Success:

  • Pass Rate: Our students have a high success rate if they take our course to its entirety. If you have failed in the past, we are here to help increase that score with the latest updated information specific to your trade.
  • Exam Scheduling: Once your application is approved and you are ready, schedule your exam through PSI. (Refer to the PSI Candidate Information Bulletin for more details. PSI – C-4 Boiler, Hot Water, and Steam Fitting Bulletin

IT’S A FACT! When you read somethingwatch somethinghear somethingand then put that information to use – ONLINE PRACTICE QUESTIONS  & ONLINE EXAMS, your ability to retain our study materials increases exponentially!

📚 Course Details: C-4 Contractor (Trade Exam)

  • Online Study: Skip the commute and study comfortably from your home or office.
  • Convenience: Our courses are designed to fit into your busy schedule, allowing you to prepare at your own pace.
  • Proven & Affordable: Rely on our proven methods to pass the C-4 Boiler, Hot Water Heating & Steam Fitting Contractor exam without breaking the bank.

California C-4 Contractor (Trade Exam)

📝 Select Your Course Format:

Please choose the format that best suits your learning style & needs, & take advantage of our comprehensive study materials to prepare effectively for your C-4 Boiler, Hot Water Heating & Steam Fitting Contractor trade exam.

  • eCourse: Online Manual: (Read Only) + A/V & Testing:

    • The Course is 100% Online
    • Online Manual (not printable)
    • Online A/V (Audio/Video)
    • Online Practice Testing
  • or Printed Manual + Online A/V & Testing:

    • Printed Manual
    • Online A/V (Audio/Video)
    • Online Practice Testing
  • or Printed Manual + CDs, DVDs, & Online Testing:

    • Printed Manual
    • CDs & DVDs
    • Online Practice Testing

Included In Each Course Format:

Each of our C-4 Boiler, Hot Water Heating & Steam Fitting Contractor License Trade Exam Courses includes the following study materials as outlined below.

  • Trade-Specific Manuals or eManuals: Comprehensive guides covering all relevant topics.
  • Audio Lectures: Listen to expert insights and explanations.
  • Video Lectures: Visualize key concepts through video content.
  • Flash Card Mode: Test your knowledge with virtual flashcards.
  • Online Practice Exams: Take multiple-timed practice exams.

📖 California C-4 Boiler, Hot Water Heating & Steam Fitting Contractor Exam Trade Manual

The California C-4 Boiler, Hot Water Heating & Steam Fitting exam manual briefly covers essential topics of the California C-4 exam’s trade section.

  • Broad Coverage: This manual provides a concise overview of essential topics for the California C-4 Boiler, Hot Water Heating & Steam Fitting exam’s trade section, including boilers, piping systems, linear expansion, safety valves, and welding.
  • Code Summaries: Gain insights from summarized sections of the Title 8 Health & Safety Orders.

Inside The Study Guide:

  • Math Review: Get a solid foundation with an introduction to construction math, covering estimating formulas, measurement units, elementary geometry, and the architect’s scale.
  • General Trade Knowledge: This section provides the basic trade information needed to pass the C-4 Boiler, Hot Water Heating & Steam Fitting trade exam.
  • Health and Safety: Become familiar with Title 8 and other essential safety regulations and practices.
  • C-4 Exam Review Questions: Read and understand each question and read every word of the explanation. The principle behind the question is your key to success.

🎧  Audio/Video Lectures:

  • Flexible Formats: Choose between streaming online audio & video files or opt for CDs & DVDs.
  • Expert Instruction:  Lectures include Math Formulas, Plans and Specifications, and Title 8 Health and Safety Orders.

Latest Online C-4 Study Questions and Online Practice Exams

Virtual Flashcards:

  • Randomized Questions: Keep your study sessions fresh and engaging via online flashcards.
  • Progress Tracking: Know where you stand and what you’ve mastered.
  • Exclude Mastered Questions: Focus only on what you need to learn.

Trade Practice Exams and Updated Questions:

  • Four-Timed General Exams: Each practice exam consists of 100 questions, allowing you to practice under timed conditions. *Includes an updated exam with the most current questions.
  • Two Title 8 Health & Safety Tests: Each specialized test is to ensure you’re prepared for all aspects of the C-4 exam.
  • Inclusive Trade Practice Questions: Each course includes practice questions complete with questions, answers, and in-depth explanations to deepen your understanding of trade concepts.
  • Updated Questions: Stay current with the latest General Knowledge, Health & Safety questions, and trade-specific updates.
  • Test & Expand Knowledge: Our questions are designed to test your existing knowledge and expand upon it through detailed explanations.

📞 Contractor Exam Application Assistance

  • Free Form Review: Request a free review of your completed contractor exam application to ensure it’s error-free before you submit it to the state.
  • Direct Assistance: All students enrolled in our C-4 Boiler, Hot Water Heating & Steam Fitting course can call us at (866) 685-8564 or email support@thompsonlearningco.com for personalized assistance in completing the application.

One-Year Unlimited Access

  • All-Inclusive Resources: Gain unrestricted access to all online eManuals, audio/video materials, and practice exams.
  • 365 Days of Access: Unlike other schools that limit you to 30, 90, or 180 days, we offer a full year of access to all online course materials, ensuring you have ample time to prepare.

🔍 CSLB (C-4) Trade Exam Content & Source Material

  • In-Depth Overview: Gain a comprehensive understanding of what the C-4 Boiler, Hot Water Heating & Steam Fitting Contractor trade exam entails.
  • Reference Compilation: Access a complete compilation of all reference materials used for the exam, ensuring you have all the resources you need.
  • Scope Outline: Understand the full scope of work covered under the C-4 contractor classification so you know exactly what to expect.

The C-4 Boiler, Hot Water & Steam Fitting Exam: Five Major Sections:

Section 1. Planning and Estimation (19%)

  • Plan boiler projects
  • Estimate boiler projects

Section 2. Boiler System Removal, Preparation, and Installation (33%) 

  • Remove old boiler systems
  • Prepare job site for new boiler systems
  • Install new boiler systems
  • Test and complete boiler systems

Section 3. Specialty Boiler Installation (11%) 

  • Commercial boiler systems
  • Industrial boiler systems
  • School and hospital boiler systems
  • Residential hydronic boiler systems

Section 4. Boiler System Maintenance, Repair, and Retrofit (15%)

  • Maintain boiler systems
  • Repair boiler systems
  • Retrofit boiler systems

Section 5. Safety (22%) 

  • Personnel safety
  • Job site safety
  • Confined space work
  • Dangerous materials

*Percentages are approximate

📚 C-4 Boiler, Hot Water & Steam Fitting Exam Source Material:

The CSLB utilizes the following publications to create the C-4 Boiler Contractor exam. California codebooks can be viewed online: www.bsc.ca.gov

2022 California Mechanical Code. International Association of Plumbing and Mechanical Officials (IAPMO).
Phone: (909) 472-4100
Free Access: https://www.dgs.ca.gov/BSC/Codes
Purchase: www.iapmo.org

2022 California Plumbing Code. International Association of Plumbing and Mechanical Officials (IAPMO).
Phone: (909) 472-4100
Free Access: https://www.dgs.ca.gov/BSC/Codes
Purchase: www.iapmo.org

Boiler Operator’s Guide. Anthony I. Kohan.
Phone: (877) 833-5524
Purchase: www.mhprofessional.com

Modern Hydronic Heating For Residential and Light Commercial Buildings. John Siegenthaler.
Phone: (800) 354-9706
Purchase: www.cengage.com

Radiant Floor Heating. R. Dodge Woodson.
Phone: (877) 833-5524
Purchase: www.mhprofessional.com

State of California General Industry & Electrical Safety Orders (Cal/OSHA) and State of California Construction & Electrical Safety Orders (Cal/OSHA). 2022. California Code of Regulations, Title 8. Mancomm.
Phone: (877) 626-2666
Free Access: https://www.dir.ca.gov/dosh/LawsAndRegulations.htm 
Purchase: http://www.mancomm.com

*Publisher information is current as of 12/22

🔍 CSLB Scope for the Boiler, Hot Water Heating & Steam Fitting Contractor Classification:

California Code of Regulations
Title 16, Division 8, Article 3. Classifications

A boiler, hot-water heating, and steam fitting contractor install services and repairs power boiler installations, hot-water heating systems, and steam fitting, including fire-tube and water-tube steel power boilers and hot-water heating low-pressure boilers, steam fitting and piping, fittings, valves, gauges, pumps, radiators, convectors, fuel oil tanks, fuel oil lines, chimneys, flues, heat insulation and all other equipment, including solar heating equipment, associated with these systems.

Authority cited: Sections 7008 and 7059, Reference: Sections 7058 and 7059 (Business and Professions Code)

Add the California Law & Business Course

Required For Your Original Contractors License

We offer our California contractor exam study materials as two separate courses. (Each course is sold separately).

  1. C-4 TRADE EXAM.

Pass the Law & Business Exam

Pass the Law & Business Exam for Your Original Contractor’s License

  • Law & Business Exam Focus: This exam concentrates on California Contractor Law and best business practices.
  • Path to Success: To qualify for your first contractor’s license, you must pass both the TRADE and LAW exams. Utilize our resources to “Read, Watch, Listen, Learn, and PASS!”

Prepare for both exams to ensure you meet all the requirements for your original contractor’s license. With the right resources and study habits, you’re on your way to becoming a licensed contractor.


* Shipping fees apply for the options not fully online.

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Free C-4 Boiler, Hot Water & Steam Fitting Practice Quiz

  • Try a free practice quiz to see what types of questions you’ll get on the C-4 Boiler, Hot Water & Steam Fitting exam.
  • Similar to Actual Test Questions: These free practice questions are designed to be similar to those on the real exam.

Use this free test to get a preview of the types of questions found on the exam.

Welcome to your free C-4 Boiler, Hot Water Heating and Steam Fitting Quiz.

REQUIRED - Enter your email address to receive a printable copy of your test results.
What do you do if you discover that a piece of a boiler is rotted throughout, not just slightly corroded?

Which of the following would you NOT use for pressure testing?

To avoid flarebacks, which of the following must be done?

Which of the following techniques is best for lifting a metal-jacketed boiler?

For which point(s) do you lift a boiler?

Who has the first authority regarding the repair a boiler?

Of the following, the most important factor in pressure vessel fatigue is:

Appliances equipped with draft hoods must be checked to verify that there is NO draft hood spillage after ______ minute(s) of main burner operation.

The gas input rating of appliances operating at elevations above ______ feet must be reduced by one of several listed methods.

When using a hydronic system and a line rises vertically 40 feet, how much pressure is needed in the line?

What sort of PPE (personal protective equipment) is recommended when using cleaning solvent?

What should be done with lifelines, safety harnesses, and shock-absorbing lanyards that have been subjected to impact loading?

What is the longest standard length of a scaffold plank?

On a 120V circuit, what color is the (protective) ground wire?

What is the minimum distance apart that acetylene and oxygen cylinders must be stored?

Which of the following is a correct method for storing acetylene cylinders?

Which of the following is the best choice for hoisting a full gas cylinder?

Cylinders containing ______ shall not be taken into confined spaces.

A dry chemical or carbon dioxide fire extinguisher rated at least ______ must be kept near operations where bottled fuel gases are being used.

No more than ______ of paints, solvents, and chemicals may be stored in a room unless an approved safety storage cabinet is present.