California Warm-Air HVAC Online Exam Prep

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California Warm-Air HVAC Online Exam Prep

Student’s enrolled in the Exam Review will receive the following items: Home Study Manual, Audio/Video Streaming Lectures, and Practice Exams. Please click product details for additional info.

What’s Included in Our Courses

Everything you need to pass your exam on the first try.
Comprehensive test-taking tips based on our experiences serving over 350,000 students.
Learning modules covering sitework, footings and foundation, plan reading, estimating and OSHA safety, general code, masonry, carpentry and more.
Highlighting guides and professional instructor support
A detailed syllabus and a copy of the course that includes a notes section.
@HomePrep’s No Pass, No Pay Guarantee. And our proven approach that has resulted in a 99% pass rate for our students.

Our courses are designed to help you become familiar with the references and allow you to find the information quickly as the exams are timed. We offer highlighting guides to draw attention to key points throughout the book and tabs (sold separately) to allow you to find key sections quickly. We encourage you to take the practice exams multiple times as the questions on the test change each time.

Resources for the California Warm-Air HVAC License

  • California Law and Business Online Exam Prep

    $219.99

    Student’s enrolled in the Law and Business course will receive the following items: Online Practice Tests, Law and Business Manual, Audio/Video Streaming Lectures, Law and Business Practice Exams, Law and Business Computer-Assisted Practice Tests.

    Add to cart
  • California Warm-Air HVAC Online Exam Prep

    $219.99

    Student’s enrolled in the Exam Review will receive the following items: Home Study Manual, Audio/Video Streaming Lectures, and Practice Exams. Please click product details for additional info.

    Add to cart

Books and Tabs to use During the Exam
(Included in the Complete Package):

  • As a busy contractor with multiple state licenses and needs, it is nice to find a valuable source that can help fulfill my obligations from testing prep to CEU requirements. The team at @HomePrep are very courteous and professional. I would recommend them for any and all license and training needs.

    James V. - Colorado
  • This course was very easy to follow. It was so convenient because I was able to do it at my own pace in my free time. I have a very busy schedule and did not have time to take a live course.

    N. Amaya - Virginia
  • Very informative, the reading out loud was a great help. I could work at my own pace. It’s the way to go for continuing education!

    A. Nichols - Oklahoma
  • I really like the fact that I can keep taking the tests over and over, and the questions keep changing.

    T. Galbrath - Idaho

California Warm-Air HVAC License Exam Content

The Warm-Air Heating, Ventilating and Air-Conditioning (C-20) Examination is divided into four major sections:
1. Planning and Estimating (25%)
• HVAC system design and evaluation
• Load and psychrometric calculations
• Duct system design and layout
• Job cost estimation

2. Fabrication, Installation, and Startup (29%)
• Duct system fabrication
• Equipment installation
• Electrical and mechanical components
• Plumbing and refrigeration components
• Air distribution and duct systems
• HVAC system startup

3. Troubleshooting, Repair, and Maintenance (24%)
• HVAC system diagnostic tests and evaluation
• HVAC system maintenance and repair

4. Safety (22%)
• Personal protective equipment (PPE)
• Job site safety requirements (Cal/OSHA)
• Handling hazardous materials

*Percentages are approximate*

Please view our Application Processing Services to streamline this process.

This is a multiple-choice examination with four choices per question. Examination questions are written to provide only one BEST answer. Some questions require mathematical computation. A calculator will be provided. There is no penalty for guessing. If you are unsure about a particular question, it is better to try to answer the question than to leave the question blank. Plenty of time is provided to answer all examination questions, so be sure to read each question and its four choices completely and carefully before selecting the BEST possible answer to the question.

  • HVAC (“C-20”) Manual
    • Audio/Video Lectures:
    • Math Review
    • HVAC (C-20)
    • HVAC Review Questions
    • Health and Safety
  • HVAC Practice Exams:
    • C-20 Test 1
    • C-20 Test 2
    • C-20 Test 3
    • C-20 Update
  • C-20 HVAC Contractor’s Computer-Assisted Practice Tests

The HVAC Manual briefly covers the major topics of the State exam including Properties of Air and Water, Psychrometric Charts, Basic HVAC Formulas, Basic Electrical Formulas, Electrical and Insulating Materials, Soldering and Brazing, Electric Motors, Fuels and Refrigerants, Mechanical Refrigeration, Solar Energy, and Plan and Circuit Symbols. The manual also contains summaries of the Uniform Mechanical Code. The last section of the HVAC Manual covers the Health and Safety Orders.

The Math Review Lecture covers the math formulas in the first part of the HVAC manual. The HVAC (C-20) lecture cover the topics addressed in the manual specific to the C-20 trade exam. The Health and Safety Lecture covers the Health and Safety Orders at the end of the HVAC manual. The HVAC Review Questions Lecture covers the HVAC Review Questions in the back of the manual.

Please be sure that you study all of the practice exams. It is important to read and understand each question, and read every word of the explanations. It is necessary to learn the principles behind the question because the State’s questions may be worded differently.

The C-20 HVAC Contractor’s Computer-Assisted Practice Tests are supplied on a computer disk which will load a software program on the student’s computer. The program presents questions one at a time, automatically scores the exam, presents the student with a grade, and lists each question answered incorrectly along with the correct answer.

Related Books and Materials for This Course

The California Warm-Air HVAC exam is closed book. To get the most out of our course, we also advise having a copy of the following materials:

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