Free Course Image Air Conditioning Training

Free online courseAir Conditioning Training

Duration of the online course: 10 hours and 15 minutes

4.5

StarStarStarStarHalf star

(2)

Build in-demand HVAC skills with a free air conditioning course—learn installation best practices, troubleshooting, charging and airflow to work smarter, faster.

In this free course, learn about

  • Brazing best practices for HVAC installs, including proper joint prep and heat control
  • Why flowing nitrogen during brazing prevents oxidation/scale in modern AC refrigerant circuits
  • Nitrogen pressure testing & leak checking procedures, and safe test pressures and methods
  • Which split-system component is most at risk of failure from over-pressurization during testing
  • Vacuum/evacuation best practices for clean, dry systems; setup for fast, reliable evacuation
  • Why airflow must be verified before charging; how airflow errors distort charge diagnostics
  • What blower static pressure readings represent and how to interpret them for airflow performance
  • Best-practice charging methods for new split systems and for inverter/ductless equipment
  • Troubleshooting mindset (wide–narrow–wide) and a structured workflow for residential AC calls
  • Expected evaporator saturation temp at 75°F indoor air and using it to assess operation
  • How adding refrigerant affects subcooling and what that indicates about system charge/state
  • Acceptable room-to-main pressure difference during airflow testing and how to correct imbalances
  • VRF service valve handling and oil return best practices for inverter-driven systems
  • Mini-split cleaning and post-maintenance performance verification without unnecessary refrigerant loss

Course Description

Upgrade your hands-on HVAC capabilities with practical training focused on how modern air conditioning systems are installed, verified, and serviced in the real world. This course is designed for anyone building professional skills in refrigeration and air conditioning, whether you are stepping into the trade, leveling up for better job opportunities, or aiming to reduce callbacks and improve reliability on every install.

You will learn to approach AC work with a process-first mindset: prepare the system correctly, protect equipment during installation, and validate performance with confident testing. From clean brazing techniques and the importance of flowing nitrogen, to pressure testing and leak checking that catch problems early, the course emphasizes habits that prevent contamination, protect components, and improve long-term system efficiency.

Good installations are verified, not guessed. That is why evacuation and vacuum best practices are treated as essential skills, helping you achieve fast and reliable results without shortcuts that can lead to moisture, non-condensables, and performance issues. You will also see why airflow must be confirmed before charging, how to interpret static readings properly, and how to build a consistent workflow that ties measurements to real system behavior.

Troubleshooting is a core theme throughout. You will practice a clear diagnostic mindset that starts broad, narrows logically, and then widens again to confirm the true cause. Along the way, the training connects pressures, temperatures, saturation concepts, and refrigerant charge adjustments to what you actually observe in the field, improving both speed and accuracy when resolving comfort complaints.

Modern equipment demands modern methods. The course includes key considerations for inverter-driven, ductless, and VRF-style systems, including service valve practices, oil return awareness, and charging strategies that reduce risk and protect performance. Maintenance is addressed with a focus on mini-split cleaning and how to verify results without unnecessary refrigerant loss.

Finally, you will strengthen your understanding of comfort beyond temperature by learning the practical side of psychrometrics, humidity, and moisture control. By connecting diagnostics to building conditions, you will be better prepared to prevent issues like duct and vent sweating and to deliver solutions that keep occupants comfortable and systems operating efficiently.

Course content

  • Video class: Installation Best Practices: Brazing

    1h01m

  • Exercise: Why is flowing nitrogen while brazing modern AC systems especially important?

  • Video class: Pressure Testing and Leak Checking

    46m

  • Exercise: Which component is most likely to fail from over-pressurization during nitrogen pressure testing on a split system?

  • Video class: Vacuum Best Practices

    29m

  • Exercise: Fast and reliable evacuation on a new residential install

  • Video class: Airflow Before Charging

    18m

  • Exercise: What does a built in controller static reading at the blower actually represent

  • Video class: Charging Best

    27m

  • Exercise: Best practice for charging a newly installed split system

  • Video class: HVAC Troubleshooting Part 1

    1h10m

  • Exercise: What evaporator saturation temperature would you expect at 75°F indoor air in cooling mode?

  • Video class: HVAC Troubleshooting Part 2

    42m

  • Exercise: Effect of Increasing Subcooling by Adding Refrigerant

  • Video class: HVAC Troubleshooting Part 3

    16m

  • Exercise: Which workflow best follows the wide narrow wide troubleshooting mindset on a residential AC call?

  • Video class: Airflow

    54m

  • Exercise: What pressure difference between a closed room and the main space is generally acceptable during airflow testing?

  • Video class: Inverter Driven Install Considerations Part 2

    44m

  • Exercise: VRF service valves and oil return best practice

  • Video class: Mini-Split Cleaning

    30m

  • Exercise: Which method best verifies ductless performance after maintenance while avoiding unnecessary refrigerant loss?

  • Video class: Psychrometrics, Humidity and Moisture Control Part 1

    1h02m

  • Exercise: Most effective step to reduce duct sweating in a humid attic

  • Video class: Psychrometrics, Humidity and Moisture Control Part 2

    56m

  • Exercise: Best strategy to prevent vent sweating in humid homes

  • Video class: Inverter Driven Install Considerations Part 1

    52m

  • Exercise: Best practice for charging inverter and ductless systems

This free course includes:

10 hours and 15 minutes of online video course

Digital certificate of course completion (Free)

Exercises to train your knowledge

100% free, from content to certificate

Ready to get started?Download the app and get started today.

Install the app now

to access the course
Icon representing technology and business courses

Over 5,000 free courses

Programming, English, Digital Marketing and much more! Learn whatever you want, for free.

Calendar icon with target representing study planning

Study plan with AI

Our app's Artificial Intelligence can create a study schedule for the course you choose.

Professional icon representing career and business

From zero to professional success

Improve your resume with our free Certificate and then use our Artificial Intelligence to find your dream job.

You can also use the QR Code or the links below.

QR Code - Download Cursa - Online Courses

Course comments: Air Conditioning Training

K

Kierra

StarStarStarStar

I love it so far

More free courses at Refrigeration and air conditioning

Free Ebook + Audiobooks! Learn by listening or reading!

Download the App now to have access to + 5000 free courses, exercises, certificates and lots of content without paying anything!

  • 100% free online courses from start to finish

    Thousands of online courses in video, ebooks and audiobooks.

  • More than 60 thousand free exercises

    To test your knowledge during online courses

  • Valid free Digital Certificate with QR Code

    Generated directly from your cell phone's photo gallery and sent to your email

Cursa app on the ebook screen, the video course screen and the course exercises screen, plus the course completion certificate