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AC Installation & Repair

Install, service and fix the ACs Nigeria is buying — and earn from every hot, sweaty street

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About this course

Learn to install split and window air conditioners cleanly, service them (gas top-up, cleaning, drainage), and diagnose the faults that bring an AC to a stop — from a unit that runs but won't cool to one that drips water or trips the breaker. You'll also learn to run this high-demand trade as a real business that turns one install into a customer who calls you for every service, every fault, and their neighbour's AC too.

Nigeria buys hundreds of thousands of air conditioners every year — and every one needs installing, then servicing, then fixing. The person who knows how never lacks work in this heat.

What you'll learn

Course syllabus — 7 lessons

  1. Why AC repair is one of Nigeria's hottest money trades — and how you get in12 min
  2. How an air conditioner actually cools — the parts you must know14 min
  3. Installing split and window units cleanly — the high-value skill15 min
  4. Servicing: cleaning, drainage and topping up the gas14 min
  5. Diagnosing common AC faults in the right order14 min
  6. Electrical safety: protecting yourself and the customer13 min
  7. Refrigerant safety and turning your skill into a real business14 min

Your project

Build a complete AC service case

A shareable AC service-case document containing the diagnosis or install plan, the step-by-step process, the tools and materials list, a relevant safety section, and a clear naira customer quote.

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 AC Installation & Repair free?

Yes. AC Installation & Repair 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 AC Installation & Repair take to complete?

6 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 AC Installation & Repair?

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

What will I learn in AC Installation & Repair?

You will build practical skills in How air conditioners actually cool, Installing split and window units cleanly, Servicing — cleaning, gas top-up, drainage, Diagnosing common faults in order, Electrical and refrigerant safety, Pricing installs, services and quotes in naira, Building a repeat-client AC 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 AC Installation & Repair?

Yes, but it has to be earned. You complete the course project — Build a complete AC service case and submit it for grading. Passing the project issues a verifiable certificate; finishing the lessons alone does not.

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Ready to start AC Installation & Repair?

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

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