🇦🇺 GandoAir – Ducted Air Conditioning Cleaning Procedure (Staff Guide)
Home > Staff Guide
1. Preparation
-
Switch off the power to the air-conditioning system.
-
Inspect all ducts, vents, and the return system for dust, mould, odours, or pests.
-
Lay protective floor coverings and prepare the cleaning area.
-
Set up vacuum and negative-pressure equipment (HEPA-filtered).
-
Use PPE: gloves, respirator, safety glasses.
2. Supply Duct Cleaning
-
Remove and clean all supply vent covers and grilles.
-
Block other vents to increase suction on one duct at a time.
-
Connect the rotary brush or air whip to the vacuum hose.
-
Agitate internal duct surfaces to loosen dust, lint, and mould.
-
Extract debris using the negative-pressure vacuum.
-
Clean flexible ducts gently to avoid damage.
3. Return Air System
-
Remove and clean the return air grille and frame.
-
Vacuum and brush return ducts.
-
Wash or replace the return filter (upgrade to high-efficiency if possible).
-
Spray antibacterial sanitiser and deodoriser through the return air path.
4. Indoor Unit (Fan Coil)
-
Remove access panels to the indoor fan coil unit.
-
Clean blower wheel, evaporator coil, and drain tray with non-corrosive cleaner.
-
Flush drain line and check for blockages.
-
Apply antibacterial sanitiser.
-
Reassemble and test fan and coil operation.
5. Outdoor Condenser Unit
-
Turn off isolator switch before starting.
-
Vacuum and hose down condenser coil using low pressure.
-
Inspect refrigerant lines, insulation, and terminals.
-
Clear debris and ensure 300mm clearance around the unit.
6. Sanitisation & Deodorising
-
Apply antibacterial fog or mist treatment through the duct network.
-
Use only biodegradable, non-toxic cleaning agents approved for HVAC use.
-
Neutralise mould spores and odours.
7. Final System Test
-
Restore power and test system in both heating and cooling modes.
-
Check airflow, suction, drain flow, and thermostat accuracy.
-
Listen for vibration or unusual noise.
-
Record results and complete the service report.
Recommended Service Frequency
-
Environment Frequency Standard residential Every 12–18 months Coastal or dusty areas Every 6–12 months Commercial / medical / childcare Every 3–6 months
Professional Standards
- Use only approved biodegradable products.
- Provide before/after photos for client transparency.
-
Always sanitise and deodorise after cleaning.
- Leave workspace spotless.