For a typical Melbourne home, a full split system service once a year is the sweet spot — ideally in spring, before the first heatwave.
Between services, wash the indoor filters every couple of months during heavy use. Dirty filters cut airflow, raise running costs and are the leading cause of ice on the indoor coil.
A proper service includes coil cleaning, drain flushing, refrigerant pressure checks, electrical connection torque checks and a fan bearing inspection.
Commercial or heavily used systems should be serviced twice a year. Most manufacturers also require documented servicing to honour a warranty claim, so keep the paperwork.
