If rooms feel warmer, smell musty, or drip unexpectedly, it is time to book aircon servicing. A thorough visit restores airflow, improves hygiene, and helps the system run efficiently in humid weather. This checklist explains what to expect from general aircon servicing in SG, so you can verify the work on the spot and keep records for future maintenance.
1. Filter Removal and Proper Cleaning
Technicians should remove all accessible filters, wash them with mild detergent, and dry them before refitting. Clean filters reduce pressure drop, raise airflow, and improve temperature control. Ask the team to note any tears or warped frames that weaken sealing, as damaged filters allow dust to bypass the mesh and foul the coil.
2. Indoor Coil Cleaning and Biofilm Control
The evaporator coil cools air and collects moisture, which encourages biofilm. A proper service includes coil-safe cleaning to lift grime without damaging fins. The technician should brush gently along the fin direction, apply an approved cleaner, and rinse to restore heat exchange. Cleaner coils reduce odours and help the unit reach the set temperature faster.
3. Drain Line Inspection and Flushing
Blocked drains are the most frequent cause of leaks. Expect a drain flush that proves a steady outflow into a bucket or clear hose. The pan should be checked for level and cracks, and any kinks in the hose should be corrected. Where gravity flow is limited, the technician should test the pump, confirm backflow protection, and show you where the clean-out sits.
4. Outdoor Condenser Rinse and Air Path Check
Leaves, dust, and roadside grime reduce condenser performance. As part of routine aircon servicing, a careful rinse clears fins and restores airflow through the coil. The team should verify fan operation, check that the unit sits on a stable base with vibration pads, and ensure there is enough clearance around the cabinet for hot air to exit freely. Good condenser airflow lowers pressure and protects the compressor.
5. Electrical, Sensor, and Control Checks
Even a clean system fails if wiring is loose or sensors drift. Technicians should tighten accessible terminals to specification and confirm that safety isolators function. Controls need a quick test: thermostat response, mode changes, and quiet operation at low fan speed. Sensor checks should confirm that readings track room temperature and coil conditions consistently.
6. Temperature Split, Current Draw, and Baseline Readings
A professional service records numbers you can compare next time. Expect a temperature split across the indoor coil, supply and return readings, and current draw at the typical load. Where gauges are appropriate, static pressure or operating pressures may be recorded. Keeping these baselines helps you spot declining performance long before comfort drops or bills climb.
7. Refrigerant Leak Screening and Visual Piping Review
Servicing is not a full repair visit, but good technicians still screen for leaks. They will look for oil stains on flare joints, inspect insulation for sweating, and note unusual frost patterns. If there are signs of a charge issue, they should recommend diagnostics rather than topping up blindly. Early detection prevents ice build-up and protects the compressor.
8. Louvres, Airflow Direction, and Noise Tuning
Air direction shapes comfort. After cleaning, the team should set louvres to sweep the room rather than blast faces or short-circuit across corridors. They should listen for rattles, check that panels fit snugly, and add simple vibration pads where needed. Small adjustments make day-to-day operation quieter and more even.
9. Hygiene Finishes and Workspace Cleanup
After wet work, the team should wipe exterior panels, replace grilles, and leave the area dry. They should remove wastewater, packaging, and used clothes. A tidy finish matters because residual moisture around the unit can invite dust streaks and light staining on walls or ceilings.
10. Simple Aftercare and Service Report
Before leaving, technicians should show you how to remove filters safely, set a sensible cleaning cadence, and recognise early warning signs. You should receive a brief service report listing tasks done and key readings. Keep this with your home records so trends are easy to track across seasons.
Conclusion
General aircon servicing in SG is more than a quick wipe of the grille. It combines filter cleaning, coil care, drain flushing, condenser rinsing, electrical checks, and measured readings that confirm healthy performance. When each step is completed and documented, cooling improves, odours fade, and the system works with less effort. Schedule servicing on a regular cadence, and you will spend less time reacting to leaks, trips, and hot rooms during rainy weeks.
Contact Newway to book aircon servicing that follows this full checklist, with documented readings and clear aftercare for reliable cooling in Singapore.
