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Refrigeration Repair Basics

Fix the fridges and freezers Nigeria can't live without — and turn every breakdown into cash

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About this course

Learn how fridges, freezers and small cold rooms actually cool, the parts inside them, and the handful of faults — no cooling, weak compressor, gas leak, dead thermostat — behind almost every job that reaches your bench. You'll learn to diagnose in a logical order, work safely with electricity and refrigerant, and build a repair business where one fixed fridge becomes a street full of regular customers.

When a fridge or freezer stops cooling in Nigeria, it is not a small problem — it is stock spoiling and money bleeding. The person who can save it never lacks work.

What you'll learn

Course syllabus — 7 lessons

  1. Why fridge repair is quiet, steady money in Nigeria11 min
  2. How a fridge makes cold: the refrigeration cycle and its parts14 min
  3. Your tools, workspace and the safety that keeps you alive12 min
  4. Diagnosing the fridge that won't cool — in the right order15 min
  5. The big four faults: compressor, gas leak, thermostat and relay15 min
  6. Working safely with refrigerant, electricity and brazing12 min
  7. Turning your skill into a fridge-repair business13 min

Your project

Repair case study: diagnose and quote a non-cooling fridge

A shareable repair case-study document covering the reported fault, an ordered step-by-step diagnosis, the actual fault and fix with safety steps, the parts and tools used, and a clear naira quote with a prevention note.

Certificates on Skillnaija are earned, not issued for attendance: you submit this project, it is graded against a rubric, and passing issues a certificate anyone can verify.

Frequently asked questions

Is Refrigeration Repair Basics free?

Yes. Refrigeration Repair Basics is completely free on Skillnaija. You need a free account to open the lessons, and there is no charge for the course, the project, or the certificate.

How long does Refrigeration Repair Basics take to complete?

5 weeks · ~4 hrs/week. There are 7 lessons, about 2 hours of material in total. You learn at your own pace and your progress is saved.

Do I need any experience to start Refrigeration Repair Basics?

Beginner-friendly. You can start from scratch — no prior experience is assumed.

What will I learn in Refrigeration Repair Basics?

You will build practical skills in How the refrigeration cycle actually works, Knowing every key component and its job, Diagnosing no-cooling and weak-cooling faults, Compressor, thermostat and relay testing, Electrical and refrigerant safety, Quoting jobs and pricing repairs in naira, Building a repeat-client repair business. Every lesson is written for a Nigerian context, with examples drawn from how the work is actually done and paid for here.

Do I get a certificate for Refrigeration Repair Basics?

Yes, but it has to be earned. You complete the course project — Repair case study: diagnose and quote a non-cooling fridge and submit it for grading. Passing the project issues a verifiable certificate; finishing the lessons alone does not.

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It's free, it's self-paced, and it ends with something you can show an employer.

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