Darwin’s monsoon pushes your split system to work as a dehumidifier, air mover, and cooling lifeline—so clean coils and drains are essential. This guide covers climate-specific AC cleaning supplies, simple DIY steps, and when to call a licensed tech. Learn how foaming coil cleaner, an aircon cleaning bag, and a portable rinse kit keep mould and musty odours at bay in tropical humidity. Get Top End-ready maintenance routines, safety notes (ARCtick), and smart thermostat tips to trim summer bills. Plus: a quick buyer’s guide, comparison table, and image-led step-through for confident cleaning. Stay cool, dry, and healthy all Wet Season.