Free Course Image Air Conditioning Training

Free online courseAir Conditioning Training

Duration of the online course: 10 hours and 15 minutes

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Explore HVAC School's free Air Conditioning Training and master essential skills in refrigeration and air conditioning. Perfect for aspiring professionals.

Course Description

Discover the extensive field of air conditioning through the comprehensive Air Conditioning Training course offered by HVAC School. Ideal for aspiring HVAC professionals, this free online training covers essential topics vital for anyone looking to excel in refrigeration and air conditioning. Dive into subjects like installation best practices with a focus on brazing, running effective pressure tests, and ensuring leak checks.

Gain valuable insights into vacuum best practices, and learn the importance of measuring airflow before charging an air conditioning unit. The course offers three intricately detailed sections on HVAC troubleshooting, guiding you through common issues and their solutions. Further narrow down your expertise in airflow management and understand special considerations for inverter-driven installations, including mini-split cleaning.

Another significant segment of the course covers psychrometrics and the many facets of humidity and moisture control, skillfully explained over two focused parts. Whether you're new to the HVAC industry or looking to enhance your technical skills, this course provides the knowledge foundation you'll need to succeed. Gain hands-on experience, deepen your understanding, and prepare yourself for a successful career in HVAC with this well-structured course.

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

Free online courses on HVAC Training

Learn aboutHVAC Training

Free Online HVAC Training Courses (Refrigeration & Air Conditioning)

Build job-ready skills with a curated selection of free online HVAC training courses designed for learners who want to understand heating, ventilation, and air conditioning from the ground up. These free courses fit within the broader world of refrigeration and air conditioning, helping you connect how cooling cycles, airflow, and system controls work together in residential and light commercial environments. Whether you’re exploring a new career path, refreshing technical knowledge, or preparing for hands-on practice, this collection focuses on practical concepts that translate to real equipment and real service scenarios.

The course options here include HVAC Training and Air Conditioning Training, both offered online at no cost. You can study at your own pace and revisit key topics as often as needed, making these free resources ideal for beginners and for technicians who want to strengthen fundamentals before moving on to advanced certifications.

What you can learn in these free HVAC courses

  • HVAC fundamentals: how heating and cooling systems are organized, common components, and basic terminology used in the field.
  • Air conditioning principles: heat transfer, sensible vs. latent heat, humidity basics, and why airflow and refrigerant charge matter.
  • Refrigeration cycle basics: compressor, condenser, metering device, evaporator, and how pressure/temperature relationships affect performance.
  • System types and applications: split systems, packaged units, and ducted vs. ductless approaches, with a focus on common use cases.
  • Controls and electrical basics: thermostats, relays/contactors, capacitors, safe meter use concepts, and troubleshooting logic.
  • Maintenance and diagnostics: filter and coil care, airflow checks, temperature split concepts, recognizing symptoms of common faults.
  • Safety and best practices: personal protective measures, working around moving parts and electricity, and responsible handling concepts.

Included free courses

  • HVAC Training: a broad introduction to HVAC systems, components, and core workflows to help you understand how systems are installed, operated, and maintained.
  • Air Conditioning Training: focused learning on AC operation and performance, including cooling principles, comfort fundamentals, and practical troubleshooting ideas.

Who these free online HVAC courses are for

These courses are suitable for newcomers seeking a clear entry point into HVAC, building maintenance staff who need reliable troubleshooting basics, and anyone interested in refrigeration and air conditioning concepts that support efficient, comfortable indoor environments.

Why train online for HVAC

Online learning makes it easier to master theory before stepping into a workshop or field setting. By completing free HVAC training online, you can build confidence in the vocabulary, system diagrams, and diagnostic thinking used across refrigeration and air conditioning work. Start with the fundamentals, reinforce them with the air conditioning-focused material, and use the knowledge to support more advanced study later.

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

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