Online HVAC Training: Self-Paced Courses

Accredited & Approved by Industry Leaders

EPA

Introduction to HVAC
The Heating, Ventilation, and Air Conditioning (HVAC) industry is the backbone of modern comfort and indoor air quality, ensuring that homes and businesses remain safe, healthy, and energy-efficient. As an HVAC technician, you are responsible for the installation, maintenance, and repair of a wide range of HVAC systems, from basic components to advanced commercial refrigeration components and automatic control components.
A comprehensive online HVAC training program is essential for anyone looking to become a certified HVAC/R technician. These programs are designed to prepare you to start a job with confidence and ensure you nail every interview. These programs demonstrate your expertise and commitment to the field, making you a valuable asset to employers and customers alike. Whether you are just starting out or looking to advance your career, online HVAC training offers the flexibility and depth needed to master the skills required for success in air conditioning, commercial refrigeration, and beyond. Online courses provide flexibility, enabling students to study anytime and from anywhere with an internet connection.
Online HVAC School
Join over 300,000 students & enroll in SkillCat's HVAC Trade School. Through our HVAC Classes Programs, you can gain skills that set you apart & ensure you feel confident in the field. Both online and traditional schools are accepted for meeting the educational prerequisites required for HVAC training.
$18/Hr
HVAC Technicians Average Starting Salary
100,000
Number of open jobs
HVAC Jobs
50,000
Job Growth
New jobs by 2026
100%
Quality of life improvement
*According to labor statistics, these figures reflect current job growth and salary trends for HVAC/R technicians.
Career Outcomes for HVAC R Technicians
The career outlook for HVAC R technicians is strong, with labor statistics showing steady growth in job opportunities across the country. The demand for HVAC technicians is projected to grow 9% over the next ten years, adding 42,500 new positions. Additionally, the employment of HVAC/R technicians is expected to grow 6% by 2032, resulting in 37,700 job openings each year. As an HVAC R technician, you can expect a competitive average salary, with many professionals earning between $57,300 and $84,250 per year, depending on experience and specialization.​
​
Completing an online HVAC training program and earning certifications- such as numerous SkillCat certifications and passing NATE certification exams- opens doors to a wide range of roles. HVAC technicians can work in residential or commercial HVAC systems, manage teams of other technicians, or specialize in advanced areas like geothermal heat pumps and chilled water systems. To become an HVAC technician, you will first have to work as an apprentice under a licensed technician for up to 2,000 hours. Those with experience managing HVAC technicians or holding multiple certifications, often move into supervisory or program director roles.
​
With the right training and credentials, HVAC R technicians are well-positioned to advance their careers, take on leadership positions, and work in diverse environments, from large commercial buildings to specialized industrial settings.
The Fastest Way to Break into The Trades
Our Top Programs
SkillCat offers a comprehensive career training programs, including an HVAC R technician courses designed to prepare students for certification exams and employment in the HVAC/R industry.
_edited.jpg)
1500 certificates issued every month
EPA 608
Get EPA 608 trained & certified for the lowest cost & from home!
OSHA-10
300 certificates issued every month
OSHA-10
Get OSHA-10 Certified in 2-days while sitting on your couch!

350 diplomas issued every month
Trade School
Get your IACET Accredited HVAC Technician School Diploma from home & on your own time.
Our HVAC Tradesmen
Don’t just take it from us
Get certified online & at your own pace
“This app allows you to study and learn whenever it's convenient. The self-paced HVAC Training learning format makes it easy to follow and retain the knowledge you need.”
- Charles Elkins, Residential HVAC Tech


Certificates that employers give raises for
“I am finally getting out of the Hotel Maintenance career. I will be starting a new one at the end of this month. The pay is way higher than what I've been making. I could not have done it with out Skillcat.”
- Randy Karl Dunn, Maintenance Tech
Accredited, simulation based training to increase confidence
"The lessons are very informative and comprehensive. The simulation-based approach makes it easy to understand and apply the concepts in real-world scenarios. The HVAC simulation challenge mode allows students to apply their knowledge in realistic, interactive scenarios as part of the training."

- Attebs Johns, Commercial HVAC Tech
EPA Certification 100% online
Download the free SkillCat App
Take online program & self proctored exam
Download your printable certificate
Course Catalog
HVAC Fundamentals
Students will have the opportunity to learn about chilled water systems (chilled water systems learn), commercial refrigeration (commercial refrigeration learn), and all weather systems (all weather systems learn). The curriculum also covers electric motors gain, air source heat pumps (air source), domestic appliances, and the differences in working on residential HVAC systems depending on the setting.
EPA 608 Certification
Residential HVAC Systems
Commercial HVAC Systems
Science Fundamentals for HVAC
Mechanical Skills
Electrical Skills
Key Sections
HVAC Fundamentals
Mastering HVAC fundamentals is the first step toward a successful career as an HVAC technician. A quality training program introduces you to the essential principles of HVAC systems, including both residential and commercial HVAC systems. You’ll learn about the operation and maintenance of electric motors, air conditioners, and refrigeration systems, as well as the importance of air quality in every environment.
​
The curriculum emphasizes general safety practices, proper installation techniques, and how to properly perform electrical measurements—skills that are critical for troubleshooting techniques and ensuring the longevity of HVAC equipment. With hands-on training and a focus on real-world applications, you’ll be prepared to become an HVAC technician who can confidently handle a variety of systems and challenges. The average salary for HVAC technicians is competitive, making this a rewarding field for those who enjoy problem-solving and working with advanced technology.
Commercial Refrigeration
Commercial refrigeration is a specialized area within the HVAC industry that requires a deep understanding of complex systems and components. As part of your training program, you’ll explore commercial refrigeration components such as evaporators, condensers, compressors, and expansion devices. These elements are crucial for maintaining the performance and reliability of refrigeration systems in commercial settings. SkillCat provides a mobile-friendly program and prepares students for the EPA Section 608 certification.
​
You’ll also gain hands-on experience with chilled water systems, air conditioning systems, cooling towers, and variable air volume systems, all of which are integral to commercial HVAC systems. Understanding air distribution and the unique requirements of commercial refrigeration allows HVAC technicians to serve industries like food service, healthcare, and retail, where temperature control is mission-critical. According to the Occupational Outlook Handbook, the demand for skilled HVAC technicians continues to grow, making expertise in commercial refrigeration a valuable asset for your career.
Advanced Systems
As HVAC technology evolves, technicians are increasingly called upon to work with advanced systems that go beyond traditional heating and cooling. Training in this area covers geothermal heat pumps, all-weather systems, and other more advanced systems that require specialized knowledge and skills. Through simulation challenge mode, students can practice maintaining HVAC systems in realistic scenarios, building confidence and competence before entering the field.
The curriculum also delves into maintaining HVAC systems through piping operations, managing system refrigerants, and working with electric motors. Emphasis is placed on general safety practices and the proper installation and maintenance of complex equipment. With expertise in advanced systems, HVAC technicians can take on challenging projects in commercial and industrial environments, often commanding a higher average salary and greater career advancement opportunities.
Environmental Considerations
Environmental responsibility is a cornerstone of the modern HVAC industry. Technicians must understand the impact of HVAC systems on air quality, energy consumption, and overall sustainability. The training program addresses these issues by teaching best practices for energy efficiency and the safe handling of refrigerants and other materials regulated by the Environmental Protection Agency (EPA). Many states require that HVAC/R technicians have a license before they are able to work independently, ensuring they meet safety and competency standards.
​
Preparing for the EPA certification exam is a key part of the HVACR technician certification course, ensuring that you are qualified to work with refrigerants and contribute to a safer, greener environment. The course also covers strategies for reducing energy use and promoting sustainable practices in both residential and commercial settings. By focusing on environmental considerations, HVAC technicians not only meet regulatory requirements but also help create healthier, more sustainable communities—while enjoying a rewarding and in-demand career.
Commercial Air Conditioning Systems
Commercial air conditioning systems are at the heart of climate control in office buildings, hospitals, schools, and retail spaces. These systems are more complex than residential units, often incorporating cooling towers, variable air volume systems, and other advanced commercial HVAC systems to maintain optimal air quality and comfort.
HVAC R technicians specializing in commercial air conditioning must understand the intricacies of commercial refrigeration components, automatic control components, and electric motors. Properly performing electrical measurements, managing piping operations, and handling system refrigerants are all critical skills for maintaining and troubleshooting these large-scale systems.
​
Through an online HVAC training program, technicians gain the expertise needed to install, maintain, and repair commercial air conditioning systems, including the latest technologies like variable refrigerant flow systems. This specialized knowledge ensures that commercial spaces remain comfortable, energy-efficient, and safe for occupants.
Proper Installation and Maintenance
Ensuring the proper installation and maintenance of HVAC systems is essential for their performance, safety, and longevity. HVAC R technicians must be well-versed in the basic components of HVAC systems, as well as more advanced systems found in both residential and commercial settings.
​
A comprehensive training program teaches general safety practices, advanced math skills, and the correct use of all the tools required for the job. Proper installation involves following precise protocols, from setting up equipment to making accurate electrical connections. Regular maintenance tasks—such as cleaning coils, replacing filters, and inspecting system components—are vital for maintaining HVAC systems and improving indoor air quality.
​
By mastering these procedures, HVAC R technicians can help prevent costly breakdowns, extend the life of HVAC systems, and ensure that both air quality and energy efficiency are maintained at the highest standards. This expertise is built through hands-on training and a deep understanding of both basic and advanced HVAC concepts.
FAQs
Can HVAC Be Self Taught?
​
HVAC and refrigeration can be self-taught through online HVAC programs, technical manuals and tutorials. However becoming a proficient HVAC technician typically requires hands-on training and practical experience. While self-study is valuable formal HVAC certification and real-world practice is essential to master the trade.​
What Is the Highest Paying HVAC Job?
​
The highest paying HVAC jobs are typically roles like HVAC project managers, HVAC engineers or specialized HVACR technicians who work on complex commercial refrigeration systems. These roles often require advanced certifications and experience.
What Is the Highest License in HVAC?
​
The highest license in HVAC is often a Master HVACR license which allows for the broadest scope of work including supervision of other HVAC technicians and work on complex commercial refrigeration systems.
Is HVACR a Good Career?
​
HVACR (Heating, Ventilation, Air Conditioning, and Refrigeration) is a good career choice due to the stable demand for skilled technicians in both residential and commercial sectors including specialized fields like commercial refrigeration.
Are Online HVAC Certifications Worth It?
​
Online HVAC certifications can be worth it if they are from accredited institutions and cover both HVAC and HVACR (refrigeration) topics. However practical hands-on experience is also critical to becoming a proficient HVAC technician.
Is SkillCat Really Free?
No, SkillCat offers a free 3-day trial for all online HVAC training and certification courses. These courses cover essential HVAC and HVACR topics so it’s an accessible option for those entering the field. After the free trial it’s $10/month to continue training.
​
How Can I Learn HVAC Fast?
​
To learn HVAC quickly consider enrolling in an intensive HVACR program that covers both HVAC and refrigeration topics. Utilize online resources, seek hands-on experience through internships and focus on certifications like EPA 608 and the SkillCat Trade Schol Diploma.
Is HVAC Associate Degree Worth It?
An HVAC associate degree can be worth it if you want to advance your career as it covers both HVAC and HVACR (refrigeration) systems and leads to higher paying positions and more opportunities.
Is HVAC Course Hard?
​
HVAC courses can be tough due to the technical nature of the work especially when including HVACR components like refrigeration. However with dedication and the right HVAC program many find the coursework manageable and rewarding.
​
Is HVAC a Hard Trade?
​
HVAC is considered a tough trade due to the technical skills required especially when including HVACR components like refrigeration. However for those who enjoy hands-on work and technical problem-solving it’s a rewarding career.
​
What Does R Stand for in HVAC?
​
In HVAC the “R” stands for “Refrigeration” which is the cooling and temperature control process in both residential and commercial HVAC systems.
​
Which HVAC Course Best?
​
The best HVAC course depends on your career goals. Courses leading to certifications like EPA 608, NATE or SkillCats Trade School are highly regarded. For those interested in commercial refrigeration a specialized HVACR program may be the best choice. R technician training is also a pathway for entry-level roles in the field.
​
What Certification Is Required for Refrigerant?
​
To handle refrigerants you must obtain the EPA 608 Certification which ensures you understand the proper handling and disposal of refrigerants crucial for both HVAC and HVACR (refrigeration) work.
​
How Much Is EPA 608 Certification?
​
EPA 608 certification is $10 through SkillCat if you complete it within 1 month! This certification is required for handling refrigerants a key component of HVACR work.
​
What Is Air Conditioning Course?
​
An air conditioning course teaches the basics of installing, maintaining and repairing air conditioning systems. These courses are often part of a broader HVACR program that includes refrigeration training as well. For those interested in commercial air conditioning specialized training is available to address the unique requirements of commercial buildings.
​
How Long Is AC and Refrigeration Course?
​
AC and refrigeration courses are 6 months to 2 years long. These courses are part of HVACR programs which prepare students for certification and work in both air conditioning and refrigeration.What Are the Requirements to Become an HVAC Technician?
​
High school diploma. Some go on to vocational school to get an HVAC certificate. High school diploma + HVAC training + HVAC certificate = successful HVAC career.
​
How to Start an HVAC Career Without College?
​
High school diploma, then HVAC training. Many start by enrolling in a program that offers an HVAC certificate. Get the certificate with high school diploma and you’re ready for entry-level air conditioning and heating positions. R technician training is also a good starting point.
​
How Important is EPA Certification for HVAC Techs?
​
EPA certification is required for any HVAC tech who handles refrigerants. To build a complete HVAC career, techs often pair EPA certification with an HVAC certificate and hands-on HVAC training.
​
Do I Need High School Diploma for HVAC Training?
​
Most HVAC training programs require a high school diploma. With a high school diploma you can access accredited HVAC training programs that lead to an HVAC certificate. This is key to a successful HVAC career especially in air conditioning and heating.
​
What Certifications Should I Get for a Strong HVAC Career?
​
Get an HVAC certificate through specialized HVAC training. Along with that get an EPA certification. With these you’re ready to work in air conditioning and heating systems. Green Mechanical Council certifications are also an option if you want eco-friendly or specialty certifications.
What Does HVAC Training Cover?
​
HVAC training covers air conditioning, heating and ventilation systems. Completing this training gets you an HVAC certificate which is key to starting an HVAC career. Most programs require a high school diploma and prepare you to obtain EPA certification. The career diploma covers a wide range of topics relevant to HVAC R technicians, residential and commercial systems.
​
​
Can I Become an HVAC Tech Without College?
Yes, many HVAC techs start with just a high school diploma and specialized HVAC training. Get an HVAC certificate and EPA certification and you can work in the HVAC industry, air conditioning and heating systems.
​
What’s the Role of an HVAC Certificate in Career Advancement?
​
An HVAC certificate is a key step in career advancement for HVAC techs. It shows completion of formal HVAC training and mastery of skills like air conditioning maintenance and repair. For those with a high school diploma, getting an HVAC certificate and EPA certification is key to advancing in an HVAC career. Customers looking for service often look for techs with recognized certifications which can impact their decision to choose a tech or company.
State Questions:
​
Do I Need an HVAC License in MO?
​
Yes, in MO you need an HVAC license to work as an HVACR tech. Licensing requirements may vary by location within the state so check the specific regulations in your area. This license ensures you are qualified to work on HVAC systems and commercial refrigeration units.
How Long to Get HVAC Certified in SC?
​
In SC it takes 6 months to 2 years to get HVAC certified depending on whether you enroll in a fast-track HVAC program or a longer program that includes refrigeration and HVACR training.
How Do I Get My HVAC License in GA?
​
To get your HVAC license in GA you must complete an accredited HVAC program, get the required work experience and pass the state licensing exam. This ensures you are qualified to work as an HVACR tech, capable of working on residential and commercial HVAC systems.
How Long is HVAC School in NC?
​
HVAC school programs in NC are 6 months to 2 years long. These programs often cover HVACR topics, heating, ventilation, air conditioning and refrigeration so graduates are well-prepared for certification and work in the field.
How Long is HVAC School in TX?
In TX HVAC training programs are 6 months to 2 years long depending on whether it’s just HVAC or HVACR (Heating, Ventilation, Air Conditioning and Refrigeration) training.
**How Long is HVAC School in KS?**HVAC school programs in KS are 6 months to 2 years long. These programs may include HVACR training which covers commercial refrigeration.
How Long Is HVAC School in AL?
​
HVAC school programs in AL are 6 months to 2 years long. These programs often include HVACR training for residential and commercial work.
How Long Is HVAC School in Chicago?
​
HVAC training programs in Chicago are 6 months to 2 years long. These programs may cover HVACR training for HVAC and commercial refrigeration.
How Do I Get My HVAC Certified in CA?
To get certified in CA you must complete an approved HVAC program which often includes HVACR training and pass the state certification exams. This certification is required to work on HVAC and refrigeration systems in the state.
How Long to Get HVAC Certified in IN?
Getting HVAC certified in IN takes 6 months to 2 years depending on whether the program includes HVACR training which covers a broader range of skills for residential and commercial work.
How Long to Get an HVAC License in NY?
Getting an HVAC license in NY takes 6 months to 2 years depending on the level of training and certification. An HVACR program that includes refrigeration training can open up more career opportunities.
​
How Do I Get My HVAC License in NC?
To get your HVAC license in NC you must complete an accredited HVAC or HVACR program, get the required work experience and pass the NC HVAC exam. This licensure allows you to work on residential and commercial HVAC systems.
How Do I Get My HVAC License in NM?
To get an HVAC license in NM you must complete a state-approved training program, get relevant work experience and pass the licensing exam.
How Do I Get My HVAC License in IN?
To get an HVAC license in IN you must complete a training program, get experience and pass the state licensing exam.
What are the Qualifications of Your Instructors?
Our courses are written by HVAC technicians and instructors, many of whom have been HVAC program directors at large companies and schools. These instructors have years of experience managing HVAC technicians and delivering accredited training so students are ready for industry certifications.
Are There Eco-Friendly or Specialized Certifications?
Yes, in addition to standard certifications there are eco-friendly and specialized options like Green Mechanical Council certifications. These are industry recognized and help technicians meet eco-friendly standards and advance their careers.
What Certification Exams Do You Prepare Students For?
We prepare students for a variety of certification exams including NATE and EPA 608, specialty test certification exams and professional technician certifications exams. These exams are required to become licensed or certified in the HVAC/R field.
Do Your Training Programs Cover Entry-Level and Advanced Topics?
Yes, our training programs cover a wide range of topics from entry-level R technician training to advanced HVACR concepts so students are ready for entry-level positions and career advancement in the HVAC/R industry.
Do You Offer Training for Commercial Systems?
Yes, our programs include training for both residential and commercial systems. Commercial air conditioning is a specialized area covered in our curriculum including systems like chilled-water setups, cooling towers and packaged rooftop units with focus on operational details, maintenance and troubleshooting specific to the commercial sector.
How Do Certifications Build Customer Trust?
Certifications like NATE and EPA 608 are recognized by customers seeking service. These credentials help build trust and confidence as customers often look for technicians with proven expertise and industry-recognized qualifications.
​
What is the Career Diploma?
The career diploma covers a broad range of topics relevant to HVAC R technicians including heating, ventilation, air conditioning, refrigeration and commercial systems so graduates are ready for many roles in the industry.







