Free, Online HVAC Training App

Join 10,000+ techs building careers in the trades.


10,000+ workers

learning through us


higher salary

for SkillCat Grads


pass rate

for EPA 608 Certification


Course Catalog
(All Training 100% free)

HVAC Fundamentals

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Intro to HVAC

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Refrigeration Theory

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Refrigeration Equipment

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Heating Theory

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Heating Systems

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Airflow Systems

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Basic Electrical Systems & Controls

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Advanced Electrical Troubleshooting

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NATE Ready to Work Training

EPA 608 Certification

Residential HVAC Systems

Commercial HVAC Systems

Science Fundamentals for HVAC

Mechanical Skills

Electrical Skills

Safety and Soft Skills

Personalized HVAC training just for you

Test-out of what you know. Train through what you need. 


Companies hiring through the app today! No experience required

Double your salary with our free, online training. What are you waiting for?

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SkillCat Success Stories

Jennifer Manzo
SkillCat Grad & HVAC Tech
HVAC Trade School

Spencer Small
EPA 608 Course & Test

Frequently asked questions

How Is the online HVAC Training 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.

How much does the online HVAC training 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 online HVAC training?

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 HVAC 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.

How is our HVAC Training Free?

At SkillCat, our mission is to bring more people into the skilled trades. Through SkillCat Academy, we're offering a fully online trade school 100% free for any students. Our goal is to bring more HVAC techs into the industry. If you take a course from us, you can join our jobs platform. HVAC companies pay us to hire workers from our platform. Workers get free HVAC training & HVAC jobs. Companies can easily hire all the talent they need. Win, win, win!

How is our EPA test fully online?

The EPA has approved SkillCat to offer the EPA test for EPA 608 certification 100% online. We have a virtual proctor that monitors to make sure you're not cheating through your device webcam (over Zoom), and we have an AI proctoring plugin that makes sure you are following all EPA rules. Through our program, you can get your EPA certification from home in hours! Take our online course, finish your proctored exam, and print out your EPA card. It's that easy.