Contractors License (C4)

Get your California boiler & hot water heating contractors license. Our program makes the licensing process very simple, which allows most of our students to get their boiler & hot water heating contractors license within 6-8 weeks.

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Getting C4-Boiler Contractors License Has Never Been Easier!

Pass Your Boiler Contractors License Exam. Guaranteed.

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1-Day Law & Business Live Streaming Class
1-Day Trade* Live Streaming Class

*(Construction Math, Safety, Test Taking Strategies)

Our Exclusive App Contractors License Exam Prep Compatible with over 8,000 devices Available for iOS and Andriod devices
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Boiler, Hot Water Heating & Steam Fitting

A boiler, hot-water heating and steam fitting contractors license allows you to install, service and repair 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.

How to obtain a
boiler & hot water heating
contractors license ?

Before you can apply for your boiler & hot water heating contractors license, you must meet the following experience requirements:

  • 4 years of experience performing/supervising boiler & hot water heating (C-4) work.
  • Social Security number or ITIN
  • Be at least 18 years old*

Don't have 4 years of boiler & hot water heating 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 boiler & hot water heating contractors license, you are required to pass the Trade examination as well as the Law & Business exam.

*Even though you can apply for a boiler & hot water heating contractors license when you are 18 years old, it is recommended that you be at least 23 years old due to experience requirement.

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#1 California Contractors License Prep Program. Try our free interactive course demo.


Full Online Course

Law & Trade Course

Regular Price: $595.00

Includes Full Online Course



Home Study





Our live classes are available
throughout California.

Includes Study Material

Limited Time Offer | Save $500

Get The Complete California
Contractors License Prep Program

For Just $1,200 $695

This special offer includes:

  • Full Online Course
  • Live Streaming Classes
  • We Pay Your 1st Year Contractors License Bond
See Details

Expires 3/31/2023

Get your boiler
contractors license.

Our boiler & hot water heating contractors license exam courses come with 100% Pass Exam Money-Back Guarantee.We will even pay your re-test fee if you fail your boiler & hot water heating contractors license exam.
98% of our students pass the state exam on their first try. Click here to read our student's testimonies.