How To Maintain Split System Air Conditioning for Peak Performance

A technician inspects an outdoor HVAC unit for maintenance.

Maintain Split System Air Conditioning for Peak Performance with regular cleaning, seasonal checks, and professional servicing to keep air fresh and energy use low. Consistent care prevents breakdowns and extends system life.

Steps on How To Maintain Split System Air Conditioning for Peak Performance

1. Clean or Replace Filters Frequently

Vacuum or wash filters monthly during peak seasons and replace if worn. Clean filters improve airflow, reduce energy draw, and protect coils from dirt build-up that degrades capacity. Mark cleaning dates on the panel to stay consistent.

2. Keep Coils and Louvres Clean

Wipe indoor louvres and schedule coil cleans to remove dust and biofilm. Clean heat-exchange surfaces transfer energy more efficiently and reduce odours and allergen circulation. Use manufacturer-approved cleaners to avoid coating damage.

3. Clear the Outdoor Unit

Remove leaves, lint, and obstructions within at least 300–500 mm of clearance. Unrestricted airflow lowers compressor workload and helps maintain quiet operation. Check for insect nests or debris after storms.

4. Check Drainage and Signs of Leaks

Ensure condensate drains freely and look for water stains or musty smells. Early attention prevents water damage, mould growth, and nuisance shutdowns. Inspect the drain pan for algae buildup.

5. Book Annual Professional Service

Have a technician check refrigerant pressures, electrical connections, sensors, and firmware. Pro servicing catches small issues early and keeps performance within design specs. Request a service report for your records.

Pro Tip: Set calendar reminders at season changes to clean filters and visually inspect the outdoor unit—simple habits keep efficiency high and comfort consistent.