Professional Aircon Servicing

🔧📋 The complete guide to professional aircon maintenance—what technicians do, what tools they use, and how to know you’re getting quality service

You’ve decided to schedule a professional aircon service. Good decision. But what actually happens during that service call?

I’ve watched hundreds of homeowners schedule services without knowing what to expect. They pay R500-R800, the technician spends 30-60 minutes at their home, and they’re left wondering: “Did they actually do everything? Was that worth the money? How do I know my aircon is properly serviced?”

The truth is, not all “professional services” are equal. Some technicians do a thorough 15-point inspection. Others simply clean the filter, spray some coil cleaner, and leave. Knowing what SHOULD happen helps you hold technicians accountable and ensures you’re getting value for your money.

In this guide, I’ll walk you through exactly what aircon servicing should include, what tools professionals use, how long each task takes, what questions to ask your technician, and how to verify a quality service.

For more maintenance guidance, check our maintenance checklist and service frequency guide. Ready to understand professional servicing? Let’s go.

📊 Why Professional Servicing Matters

DIY maintenance (filter cleaning, debris removal) is essential, but professional aircon servicing goes far beyond what homeowners can do.

Read our service cost guide and service frequency guide.

📋 What to Expect: Service Call Overview

Here’s what typically happens during a professional aircon servicing call:

Before the technician arrives:

• You schedule an appointment (30-60 minute time window).
• Technician calls to confirm arrival time.
• Ensure clear access to indoor and outdoor units (move furniture if needed).

When the technician arrives (first 5 minutes):

• Introduces themselves and shows ID/company branding.
• Asks about any issues you’ve noticed (noises, leaks, poor cooling).
• Reviews service history if available.
• Explains what the service will include and estimated duration.

During the service (30-60 minutes):

• Technician performs 15-point inspection (see checklist below).
• Uses specialized tools (manifold gauges, multimeter, coil cleaner).
• Cleans indoor and outdoor components.
• Tests system operation.
• Documents findings.

After the service (final 5-10 minutes):

• Technician explains what was done.
• Points out any issues found and recommends repairs if needed.
• Provides service report/invoice.
• Answers your questions.
• Suggests next service date.

🔧 Step-by-Step: What Technicians Actually Do

Here’s the detailed breakdown of each step in a professional hvac inspection and service:

Indoor Unit Service (20-30 minutes):

1. Turn off power – Isolator switch and breaker.
2. Remove and clean filters – Wash with mild soap, dry, reinstall.
3. Open front panel – Access evaporator coils and drain pan.
4. Inspect evaporator coils – Check for dirt, ice, or damage.
5. Clean evaporator coils – Apply coil cleaner, rinse with spray bottle.
6. Clean drain pan – Remove standing water and debris.
7. Flush drain line – Pour vinegar/water mixture or use compressed air.
8. Inspect fan blower wheel – Check for dust buildup, clean if needed.
9. Check fan motor operation – Listen for unusual noises, test bearings.
10. Inspect control board (PCB) – Look for burnt components or loose connections.
11. Test thermostat – Verify temperature accuracy.
12. Check electrical connections – Tighten loose terminals.
13. Test capacitor – Measure microfarads (should be within 5-10% of rating).

Outdoor Unit Service (20-30 minutes):

1. Turn off power – Isolator switch and breaker.
2. Remove debris – Leaves, grass, twigs from around and inside unit.
3. Clean condenser coils – Apply coil cleaner, rinse with gentle water spray.
4. Inspect fan blade – Check for cracks, bends, or damage.
5. Test fan motor – Listen for noise, check bearings, test capacitor.
6. Check compressor operation – Listen for normal sound, check current draw.
7. Test refrigerant pressure – Connect manifold gauges, compare to specifications.
8. Check for refrigerant leaks – Use electronic leak detector or UV dye.
9. Inspect contactor and relays – Check for burnt contacts, pitting.
10. Check electrical connections – Tighten loose terminals.
11. Test capacitor(s) – Measure microfarads.
12. Check insulation on refrigerant pipes – Replace if damaged.
13. Verify unit is level – Adjust mounting if needed.

System Performance Test (5-10 minutes):

1. Restore power and run system in Cool mode.
2. Measure temperature drop across indoor unit (should be 10-15°C).
3. Measure current draw of compressor and fans.
4. Check that outdoor fan is spinning correctly.
5. Listen for unusual noises.
6. Verify drain line is dripping outside.
7. Check remote control operation.

🛠️ Tools and Equipment Professionals Use

A qualified technician arrives with a full toolkit. Here’s what they use and why:

📋 Complete Service Checklist (15-Point Inspection)

Use this checklist to verify your technician performed a thorough aircon servicing. A quality service includes all of these:

If your technician skipped several of these steps, they didn’t do a full service. Ask questions or choose a different provider next time.

Read our maintenance checklist.

⏱️ How Long Does a Service Take?

Service duration depends on unit type and condition:

Warning signs of a rushed service:

• Technician finishes in under 30 minutes for a split system
• Didn’t open the indoor unit panel (just cleaned filters from outside)
• Didn’t check refrigerant pressure
• Didn’t test electrical components
• Didn’t provide a service report

💰 Cost Breakdown: What You’re Paying For

A professional aircon servicing costs R500-R800 for a standard split system. Here’s what that covers:

Read our detailed service cost guide.

🚩 Red Flags: How to Spot a Poor Service

Not all “professional” services are equal. Watch for these red flags:

• No refrigerant pressure check: This is the most important diagnostic test. If they skip it, they’re not doing a full service.
• Didn’t open the indoor unit panel: Just cleaning filters from outside isn’t enough. They need to access coils and drain pan.
• Rushed service (under 30 minutes for split system): A thorough service takes 45-60 minutes minimum.
• No tools visible: A professional arrives with a toolkit (manifold gauges, multimeter, etc.). If they only have a screwdriver, be suspicious.
• No SAQCA certification for refrigerant handling: Ask to see their certification. It’s illegal to handle refrigerant without it.
• No service report provided: A professional documents what they did, what they found, and any recommendations.
• Upselling unnecessary repairs: Be wary of technicians who immediately find “urgent” problems that need expensive fixes. Get a second opinion.
• Cash-only payments with no invoice: Legitimate businesses provide invoices for warranty and tax purposes.

Read our installer selection guide and contractor selection guide.

❓ Questions to Ask Before Hiring

Before scheduling a service, ask these questions to ensure quality:

1. “Are you SAQCA certified for refrigerant handling?” – This is a legal requirement. If they say no or hesitate, hire someone else.
2. “What does your service include?” – Compare their answer to the 15-point checklist above.
3. “How long will the service take?” – 45-60 minutes for a split system is standard.
4. “Do you provide a written service report?” – Yes, they should.
5. “What’s your call-out fee vs service cost?” – Some charge a call-out fee plus service; others include it.
6. “Do you have public liability insurance?” – Protects you if they damage your property.
7. “Can you provide references?” – A quality technician has happy customers.

Read our benefits of choosing us and customer reviews.

📝 What to Do After the Service

After the technician leaves, take these steps:

1. Review the service report – Understand what was done and any recommendations.
2. Test the system yourself – Run it in Cool mode for 15-20 minutes. Does it cool well? Any unusual noises?
3. Schedule next service – Mark your calendar for next year (or 6 months if heavy usage).
4. File the service report – Keep for warranty and future reference.
5. Leave a review – Help other homeowners by sharing your experience.
6. If repairs were recommended, get a second opinion – For major repairs (compressor, control board), always get multiple quotes.

Read our repair services guide.

❓ Frequently Asked Questions About Professional Aircon Servicing

✅ Final Thoughts: Knowledge Protects Your Investment

Understanding what happens during professional aircon servicing empowers you to hold technicians accountable and ensure you’re getting value for your money.

Key takeaways for professional servicing:

• A full service takes 45-60 minutes for a standard split system. Rushed services skip important steps.
• The 15-point inspection includes filters, coils, drain line, refrigerant pressure, electrical components, and performance testing.
• Refrigerant pressure check is critical – detects leaks before they destroy your compressor.
• Electrical testing identifies failing capacitors – replacing them now (R500-R1,000) prevents emergency breakdowns later.
• Always verify SAQCA certification – handling refrigerant without a license is illegal.
• A service report should be provided – documenting what was done and any recommendations.
• Annual service costs R500-R800 – saves R500-R1,500/year on electricity and prevents R5,000-R12,000 repairs.
• Book pre-summer (September-October) – avoid December rush and ensure your unit is ready for heatwaves.

Your action plan: First, if your aircon hasn’t been serviced in over a year, schedule a professional service. Second, use the 15-point checklist to verify the technician does a thorough job. Third, ask for SAQCA certification and proof of insurance. Fourth, request quotes from local technicians to compare prices. Fifth, read our maintenance checklist for DIY tasks between professional services.