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Airco19 August 2025 · 3 min

Aircon smells, especially when switched on — what now?

A musty smell from the vents is almost always mould on the evaporator. Good news: usually fixable without expensive parts.

Aircon smells, especially when switched on — what now?

The evaporator in your aircon is always damp and cold — an ideal spot for mould and bacteria. After a few years that starts to smell the moment you switch the aircon on.

What do we do?

Ozone treatment or a chemical cleaning of the evaporator plus a fresh pollen filter. Usually done within an hour and you'll smell the difference straight away.

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