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Duct cleaning video

Why dust comes out of your vents

The short answer

Dust usually comes out of your vents because air is getting around the filter: a filter that is the wrong size or not seated properly lets room dust slip past it. In older homes, gaps or loose duct joins can also pull in dust from the roof space.

  • Duct cleaning
  • 0:36 Short
  • Published 28 Oct 2026

7 days a week. No call-out fee, and you pay after the job.

Key points

  • The return-air grille pulls in room dust, pet hair and lint every time the system runs.
  • The filter should catch it, but a wrong-sized or badly seated filter lets air slip around it.
  • Gaps or loose joins in older ducts can draw dust in from the roof space.
  • A proper duct clean removes the build-up inside the ducts and checks the filter and joins.

Questions this video answers

Why is dust coming out of my air vents?

Usually because air is bypassing the filter. A filter that is the wrong size or not seated properly lets dust slip around it, and older ducts can have gaps or loose joins that pull in dust from the roof space.

What fixes dusty vents?

A proper duct clean removes the build-up inside the ducts, and FreshDuct also checks the filter and the duct joins.

Transcript

Dust puffing out of your vents? FreshDuct explains where it's coming from. Your return-air grille pulls in room dust, pet hair and lint every time the system runs. The filter should catch it. But a filter that's the wrong size, or not seated properly, lets air slip around it. Older ducts can also have gaps or loose joins that pull in dust from the roof space. A proper FreshDuct clean removes the build-up inside the ducts, and checks the filter and joins.

No call-out fee, and you pay after the job. Call FreshDuct on 04 3191 8137.