Preventative Maintenance Procedures

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Electrical/General Safety

Heat Transfer

HVAC Tools/Components


Air Conditioning Systems

This topic introduces preventative maintenance procedures for AC systems.

Forced Air Heating Systems

This topic introduces preventative maintenance procedures for forced-air heating systems.

Hydronic Heat Systems

Explains how to inspect hydronic heat systems to ensure correct pressure levels, check headers and timers, and inspect boilers.

Charging the System

This topic introduces charging HVAC systems. This topic is covered at a more advanced level in a separate course.

Heating Systems

This topic will cover how to service the different components in various heating systems.

General Inspections

This topic will cover the general inspection of HVAC systems and provide a template for a complete preventative maintenance service appointment in a home.

Refrigerant Charge Verification

Learn how to verify a proper refrigerant charge throughout the system using properly calibrated gauges and thermocouples.

Charging the System

This topic introduces charging HVAC systems. This topic is covered at a more advanced level in a separate course.

Leak Detection

This topic introduced leak detection of systems. This topic is covered at a more advanced level in a separate course.

Airflow Check

Learn how to properly measure the airflow pressure, temperature, and humidity, and how to adjust the system for any required changes.

Condensate Removal

This topic will explain how to replace the condensate removal pump in an HVAC system.

Verify Proper Fuel Input

This topic explores combustion analysis and how to verify a proper fuel mix ratio is being used in the system.

Carbon Monoxide Testing

Carbon monoxide is a highly toxic gas and it must be ensured that there are no CO leaks in an HVAC system. It is common for small CO monitors to be placed in a home, but more advanced testing must be done by service technicians after any service work.

Frequently Asked Questions

How Is the online course set up?

When building the course, our goal was to make online HVAC training fun, engaging, and exciting! With that goal in mind, we have put a tremendous amount of multimedia material into our courses. As a student, you will never just be reading or listening to text- this is not a textbook!​ Every single part of our courses is full of compelling graphics, informative animations, and real-life images from HVAC systems. After each lesson- and within many lessons- you will be asked to answer HVAC technician questions or do HVAC system calculations focused on what you just learned. These HVAC system exercises make learning a lot more interactive and fun.

Will you help me get hired after the course?

Once you complete the online HVAC training, you will have the option to join our talent network. We have partnered with leading HVAC companies, and they are all hiring right now! Companies will look for new hands from this talent pool since you have proven your ability through training simulations and testing. To join our talent pool, take the HVAC assessment on our website.

How much do the online courses cost?

Nothing! Our online HVAC training is entirely free, and we have made it as simple as possible. We took out all the filler, which can cause similar programs to take up to a year, and worked with hiring managers to teach you the skills that you need to know to start your career in HVAC.

How do the simulations work?

We developed the HVAC training simulations based on real-world scenarios that you will encounter as an HVAC technician. These simulations allow us to test you on the information you just learned, and they teach you how to apply the knowledge to practical tasks.

Do I need a computer for the online training courses?

To take our free online HVAC course, you will need a phone, tablet, or computer with an internet connection. A lot of our graduates took classes while they were on the job site or in between jobs. The HVAC course is super convenient and always accessible.

Is there a textbook for the online training?

No textbooks here! We wanted to design a free, online HVAC course that wasn't boring. All of our courses use animations, simulations, and quizzes to teach you the skills you will need to become an HVAC tech.

Do hiring managers like online courses like this?

Absolutely. We designed these courses with hiring managers from large HVAC companies to be sure that everything in the course is essential and approved by them. Also, hiring managers love simulations since it gives them a better understanding of how you apply the knowledge you learned in the course. That gives you an advantage over anyone who has just been studying a textbook.

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