With an HVAC contractors license (warm-air heating, ventilating and air-conditioning), you will be able to fabricate, install, maintain, service and repair warm-air heating systems and water heating heat pumps, complete with warm-air appliances; ventilating systems complete with blowers and plenum chambers; air-conditioning systems complete with air-conditioning unit; and the ducts, registers, flues, humidity and thermostatic controls and air filters in connection with any of these systems.
The HVAC classification includes warm-air heating, ventilating and air-conditioning systems which utilize solar energy.
Before you can apply for your HVAC contractors license, you must meet the following experience requirements:
Don't have 4 years of general engineering experience?
A college degree can be substituted for up to three years of that experience.
The State will accept self-employed experience.
In order to obtain your HVAC contractors license, you are required to pass the Trade examination as well as the Law & Business exam.
*Even though you can apply for a HVAC contractors license when you are 18 years old, it is recommended that you be at least 23 years old due to experience requirement.
Includes 120-days access to Law & Trade videos, audio, reading, and practice exams
$495.00
Regular Price: $595.00
Our live classes are available throughout California. Includes Study Material
$595.00
Comes with a 120-day complimentary access to our online tests
$295.00
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Full Online CourseLive Streaming ClassesWe Pay Your 1st Year Contractors License Bond
Expires 1/31/2026
We've created a step-by-step guide that walks you through everything you need to know about obtaining your C-20 HVAC Contractor License in California, from eligibility and application to exam preparation, bonding, and compliance.
Get clarity on the entire process before you begin.
Our HVAC contractors license prep course covers California HVAC trade topics, Law & Business exam requirements, and real-world applications so you can pass the exams and get licensed with confidence.
We provide step-by-step guidance on filling out and submitting a contractor application to avoid mistakes and minimize delays and rejection risks.
To familiarize yourself with a state testing system, real exam structure, and question formats, you’ll get access to mock tests available online or via our mobile app. They simulate real exam conditions to help you test the waters before state exams.
You’ll get access to comprehensive, well-structured, and illustrated materials covering all related topics for trade and law exams, including study guides, textbooks, online lectures, and live instruction classes, depending on the study option you choose.
Compatible with over 8,000 devices
When you enroll in any of our courses, you’ll get full access to our powerful mobile learning app, designed to help you study on your schedule. Whether you're on the job site, at home, or on a break, you can study when it's most convenient for you.
Included free with every course.
Access available to enrolled students only
I was able to pass my contractor exam with their online program within 6 months. I recommend
— Alex Romo
Great online platform and great customer service when needed.
— Mark Cappelletti
Great platform to study and excellent personal they help me out to the entire process
— Josue Mejia
Our students don’t just study. They pass.With our proven teaching methods, 98% of students pass their exams on the first try. You can feel confident you're investing in a program that truly works and sets you up for success from day one.
Our students don't just study. They pass.With our proven teaching methods, 98% of students pass their exams on the first try. You can feel confident you're investing in a program that truly works and sets you up for success from day one.
Yes. You must hold a C-20 Warm-Air Heating, Ventilating, and Air-Conditioning (HVAC) Contractor License if you plan to charge $1,000 or more (including labor and materials) for HVAC work in California. This applies to the installation, repair, or servicing of systems in residential, commercial, or industrial settings. The license is also required for projects under $1,000 if the work requires any type of permit or if the unlicensed individual hires other workers to assist.
The only way to become a certified HVAC contractor is to pass the CSLB licensing exam, which includes two parts: Law & Business and Trade. The exams cover topics such as heating and cooling systems, ventilation, ductwork, safety codes, and regulations.
We guide you through every step — from completing your CSLB application to preparing for the Law & Business and Trade exams. You'll study using our flexible online, live streaming, in-class, or home study options. With practice exams, mobile app access, and a 98% student success rate, you'll be ready to pass with confidence.
Most students who enroll in a prep course at Contractors Intelligence School are able to earn their C-20 HVAC license within 6 to 8 weeks, depending on how quickly they complete the application and pass the exams.
Get expert guidance with your CSLB application and exam preparation so you can get licensed quickly and grow your business with confidence.
Prefer to talk it through? Call us and get personalized advice from our friendly support team.
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