Refrigerators and air conditioning systems (ACs) are used in nearly all commercial, residential and industrial buildings worldwide. These systems, at some point require—installation, maintenance, and repairs in case of any damages/issues.

So what does this mean?

There is an overwhelming need for refrigerator and AC technicians worldwide. Which means that—once you acquire the necessary skills, you’ll be assured of job opportunities.

But what’s important to note though, is that—for you to succeed in this profession, you must be knowledgeable in electricity, mathematics, physics, and chemistry.

Without further ado, here are some free online refrigerator and AC repairing courses to start with.

  1. Danfoss-Engineering Tomorrow

This site offers a comprehensive range of free courses and webinars on refrigerator and AC repairing. You’ll cover: refrigeration fundamentals, factors influencing temperature of a system, AC and commercial refrigeration…and more. 

  1. Free Video Lectures

This site offers a series of free video lectures on refrigerator and AC repairing. It will guide you through—the basics of refrigerators and ACs, fundamentals of AC repairing, and teach you about condensers and evaporators in detail.

  1. You Tube

Want to learn refrigerator and AC repairing from scratch? This is your go to website. It covers a series of insightful free online courses that provide in-depth understanding of how refrigerators and ACs work. You’ll find courses on: basics of refrigeration and AC repair, safety practices for technicians, and more.

  1. Star Learning Solutions

This site offers free training on AC and refrigeration. You’ll not only learn about repairing, but also cover topics on: fundamentals of refrigeration, AC10 Automotive air-conditioning basics, maintenances and more.

  1. Alison.com

This site offers a free course on—oil in refrigeration and AC systems. You’ll learn: the different types of leak tests like the use of soap and nitrogen, basic methods of recovery and more. And, in addition, how to fix oil leaks in ACs and refrigeration plants.

  1. HVAC School

This site was designed by technicians to teach other technicians refrigeration in detail. It uses well-explained podcasts, videos and fun quizzes to help students better understand how refrigerators work. You’ll find courses on: air conditioner cleaning tips, how to use an ohmmeter and more.

  1. Yes Yen Graphi Tech

This site offers the most practical training on refrigerator and AC repairing. It uses picture animations and videos to give detailed explanation of: how refrigerators and ACs work, and—teaches the different compressor types, their classifications, and the refrigeration cycle.

  1. Skill Cat 2022

Download this free online appliance repair app that teaches refrigerator and AC repairing for free. It uses 3D stimulations for interactive and fun learning to help you better understand—the basics of electricity and science fundamentals. You’ll learn: how to maintain and troubleshoot domestic refrigerators, key hand tools involved, and refrigeration theories.

  1. Learnhvaconline.com

This site offers a free HVAC course that covers a range of topics in refrigerator and AC repairing. You’ll cover: an in-depth introduction to refrigeration systems, how they operate, and how pressure, heat and temperature supports the functionality of refrigerators and ACs.

  1. Academia.edu

This site offers a free PDF AC and refrigerator repair course. It provides a complete step-by-step repair guide for residential and commercial ACs and refrigerator units. You’ll also cover: basic introduction to refrigeration, learn how to troubleshoot refrigerant flow controls and more.