Airflow restrictions
Dirty filters, blocked coils and weak indoor fans.
No-cooling fault specialists
Aircon Not Cooling? Professional Fault Diagnosis
An air conditioner that is not cooling does not always need gas. Dirty filters, blocked coils, failed fans, electrical faults, sensor problems, poor installation and compressor issues can create the same symptom.
Service scope
Practical repairs for residential, commercial and industrial systems
An air conditioner that is not cooling does not always need gas. Dirty filters, blocked coils, failed fans, electrical faults, sensor problems, poor installation and compressor issues can create the same symptom.
Refrigerant problems
Leak detection, pressure testing and correct charging.
Electrical faults
Power supply, capacitors, boards, sensors and contactors.
Outdoor-unit problems
Condenser airflow, fan operation and heat rejection.
Capacity & installation
Incorrect sizing, long pipework or poor installation.
Compressor diagnosis
Electrical and refrigeration checks before replacement.
Faults investigated
Problems our technicians diagnose
- Air is slightly cool but the room never reaches temperature
- Outdoor unit does not run
- Indoor coil forms ice
- Aircon works at night but not during daytime heat
- System starts and stops every few minutes
- Cooling gradually became worse over several weeks
Diagnosis before replacement
How the service is handled
We start with temperature and airflow measurements, then check electrical operation and the outdoor unit. Refrigerant pressure is assessed only in context, because pressure alone can be misleading when airflow or ambient conditions are abnormal.
- Clear fault assessment
- Written quotation before major work
- Testing after repair or service
- Maintenance recommendations where relevant
Information to send when booking
Share the location, equipment brand, model if visible, system type, fault symptoms, when the problem started and photographs of the indoor and outdoor equipment.
Send Details on WhatsAppIndicative 2026 pricing
Service price guide
These ranges show typical starting points. The final quotation depends on system size, access, parts, refrigerant and the fault found.
| Service | Indicative price | Typical inclusion |
|---|---|---|
| No-cooling diagnosis | R650–R1,500 | Depends on residential or commercial unit |
| Major service | R750–R1,800 | Unit type dependent |
| Leak detection | R1,250–R3,000 | Circuit and access dependent |
| Refrigerant recharge | R1,150–R2,800 | After leak assessment |
| Compressor diagnosis | R1,250–R3,500 | Electrical and system checks |
Pricing note: Prices are 2026 estimates for standard access and are confirmed in writing after inspection. Spare parts, refrigerant quantity, cranes or access equipment, electrical upgrades, travel outside core service areas and VAT may be additional unless specifically included in the quotation.
View the complete aircon and HVAC price list →Customer questions
Frequently asked questions
Does an aircon that is not cooling always need gas?
No. Airflow, dirt, fans, electrical controls, sensors, installation and compressor faults can all cause poor cooling.
Can I keep running an aircon that is icing up?
It is better to switch it off and arrange inspection. Continued operation can worsen water leakage and stress the compressor.
Why does my aircon cool at night but not in the day?
Possible causes include dirty outdoor coils, weak condenser airflow, low capacity, high heat load, refrigerant issues or compressor deterioration.
How quickly can the fault be found?
Many faults can be identified during the first visit, but intermittent controls, large VRF systems or hidden leaks may require additional testing.
Will I receive a quote before repair?
Yes. The diagnosis and proposed corrective work are explained before major parts or refrigerant work proceeds.
Book an air-conditioning inspection
Send the equipment type, brand, location and fault description for a faster response.