Why Indoor Air Still Triggers Allergies (Even With Windows Shut)
Hay fever is often blamed on outdoor air, but many Australians are surprised to find their symptoms persist indoors. Even with windows closed and air purifiers running, sneezing, congestion, and itchy eyes can continue day and night.
The reason is simple: pollen doesn’t behave the way we think it does.
Once pollen enters the home—on clothing, pets, or through brief door openings—it stops drifting and starts settling. Sofas, carpets, bedding, curtains, and even pet fur become reservoirs for allergens. Every movement stirs these particles back into the air, creating a constant cycle of exposure.
Traditional air purifiers rely on airflow to pull particles toward a filter. While this works for some airborne dust, it leaves behind pollen that settles in corners or clings to surfaces. In rooms with poor circulation, allergens can remain active for days.
This explains why many households notice little improvement during peak pollen months, despite running purifiers continuously.
What’s often missing from the conversation is the difference between filtering air and managing an indoor environment. Reducing allergy triggers indoors requires addressing both airborne particles and the allergens resting on everyday surfaces.
This is especially important in Australian homes, where long pollen seasons and indoor living during heatwaves or bushfire smoke events limit ventilation options.
Managing indoor pollen effectively means understanding how allergens move—and where they hide. Once that’s clear, it becomes easier to make informed decisions about air quality strategies that actually support sleep, focus, and overall wellbeing.
For a deeper breakdown of how pollen behaves indoors and why filters alone may fall short, read more here: 👉 How to Neutralise Pollen and Reclaim Your Indoor Air
End indoor pollen allergies. Standard filters miss particles on surfaces. Learn how active tech neutralises airborne and surface allergens.