How is a chemical wash different from a normal aircon service?

A normal service is often just a filter clean and quick check. A chemical wash dismantles the indoor unit further and uses chemical solution to strip mold and grime off the coil and blower fan.

How often should I get a chemical wash done?

Roughly once a year for typical household use, more often in humid rooms, kitchens, or units that run almost continuously.

Does a chemical wash fix a smelly aircon?

In most cases yes, since the smell usually comes from mold or bacteria buildup on the coil and blower, which the chemical wash removes.

Aircon chemical wash / deep cleaning service

A chemical wash is a deeper clean than the standard service most people book. It involves partially dismantling the indoor unit, spraying the coil and fan blower with chemical cleaning solution to strip built-up mold, dust, and grime, then rinsing thoroughly before reassembly. This is different from a quick filter clean or a wipe-down service, which only handles the surface and filter.

Signs you need a chemical wash rather than a basic service include musty smell when the unit starts, visible black spots around the vents, weak airflow even after filter cleaning, or water dripping from the unit. Units that haven't had a deep clean in over a year, or that run in dusty/humid rooms, tend to need this more often.

Ask whether the quoted service is a basic wipe-clean or a full chemical overhaul with dismantling
Musty odor and visible mold on the blower fan are the clearest signs a chemical wash is overdue
Chemical wash is usually recommended annually for units in humid or heavily used rooms

What it costs

Chemical wash costs more than a basic service because it takes longer and involves dismantling the unit, but it typically costs less than a repair caused by a clogged, moldy coil that has damaged the fan motor. Price can vary by number of units serviced in one visit.

Top 3 by our score

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FAQ

How is a chemical wash different from a normal aircon service?: A normal service is often just a filter clean and quick check. A chemical wash dismantles the indoor unit further and uses chemical solution to strip mold and grime off the coil and blower fan.
How often should I get a chemical wash done?: Roughly once a year for typical household use, more often in humid rooms, kitchens, or units that run almost continuously.
Does a chemical wash fix a smelly aircon?: In most cases yes, since the smell usually comes from mold or bacteria buildup on the coil and blower, which the chemical wash removes.

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