Why does my aircon smell?
A musty smell usually means the indoor unit is holding moisture, dust or mould build-up somewhere in the airflow path.
Why does my aircon smell?
A musty smell usually means the indoor unit is holding moisture, dust or mould build-up somewhere in the airflow path.
What the smell can mean
- A damp or musty smell often points to moisture and build-up inside the indoor unit.
- A sour smell can be worse when the unit first starts or after it has been sitting unused.
- Cleaning the filter can help airflow, but it may not remove build-up deeper inside the unit.
When to book it in
If the smell returns after filter cleaning, or if anyone in the property is sensitive to the air quality, send the system type, brand and room details through the form.
Related service pages
Related air conditioning questions
Why does my air conditioner smell?
Air conditioner smells are commonly caused by moisture, dust, mould build-up, dirty filters or build-up inside the indoor unit.
Why does my air conditioner smell musty?
A musty smell usually means moisture or organic build-up is sitting inside the indoor unit or drain area.
Can dirty filters cause air conditioner smells?
Yes. Dirty filters can restrict airflow and hold dust, but smells can also come from deeper inside the unit.
Is a smelly air conditioner bad for indoor air quality?
A persistent smell can indicate build-up inside the system, so it should be checked rather than ignored.
Will servicing remove air conditioner smells?
Servicing can help by checking filters, airflow, drainage and indoor-unit build-up that may be causing the smell.
Book an aircon service.
Send the job details through the form. A few clear notes now can save a lot of back-and-forth later.
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