Short answer: every 6-12 months for split systems, every 12-18 months for ducted. But it depends on where you live, what you've got, and who's breathing the air.
| System Type | Recommended Clean | If Pets/Allergies |
|---|---|---|
| Split system (1-3 units) | Every 12 months | Every 6 months |
| Split system (4+ units) | Every 12 months | Every 6 months |
| Ducted system | Every 12-18 months | Every 12 months |
| Coastal property | Every 6-9 months | Every 6 months |
| Commercial/office | Every 12 months | Per lease terms |
Why Coastal Air Means More Cleaning
Salt air on the Central Coast is brutal on air conditioners. The salt accelerates corrosion on the coil, and the humidity keeps the drain pan wet longer. If you're in Wamberal, Terrigal, Avoca or anywhere within 2km of the beach — clean every 6-9 months.
Filter vs Professional Clean — What's the Difference?
Filters — you can (and should) clean these yourself every 2-3 months. Vacuum or wash, let dry completely. This keeps airflow up but doesn't touch the internal mould.
Professional deep clean — strips the unit down, chemically cleans the coil, barrel fan, and drain pan. This is what actually removes the mould, bacteria, and sludge. Surface sprays don't reach it.
7 Signs You're Overdue
- Musty smell when the unit starts
- Visible black spots on the vents or louvres
- Reduced airflow — barely feel it on high
- Heating or cooling takes longer than it used to
- Power bills creeping up (dirty system works harder)
- Water leaking from the indoor unit (blocked drain)
- Anyone in the house has unexplained allergies or cough
Winter Special — $30 Off
Professional split system clean from $250
90 minutes. We come to you. Same process, same price, every time.