Protecting Indoor Air Quality During Bushfire Season
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Health8 July 2025·6 min read

Protecting Indoor Air Quality During Bushfire Season

Why Bushfire Smoke Is So Harmful

Bushfire smoke is full of fine particulate matter (PM2.5) — particles small enough to travel deep into the lungs and bloodstream. During smoke events, indoor air can become nearly as polluted as the air outside if your building isn't protected.

The Basics: Keep It Out, Filter What Gets In

  • Close windows and external doors, and seal obvious gaps
  • Switch air conditioning to recirculate mode rather than drawing in outside air
  • Run a HEPA air purifier in the rooms you use most

The Role of Your Filter

A quality filter is your first line of defence. Standard dust filters do little against fine smoke particles — you need higher-efficiency media. F7 to F9 filters capture a large share of smoke particulate, and HEPA H13/H14 filters are the gold standard for removing it entirely.

If you live in a smoke-prone area, keep higher-grade filters on hand before the season starts.

For Businesses

Offices, childcare centres, aged care facilities and healthcare sites should review filtration ahead of summer. Upgrading building filters and stocking spares keeps staff and visitors safe when air quality drops.

Be Ready Before the Smoke Arrives

We can supply smoke-rated filters for homes and commercial systems, including custom sizes. Don't wait for the next smoke event — call 07 3800 3448 or request a quote to prepare.

Written by

The Total Air Filtration Team

Have questions about this article or need help with your air filtration? We're here to help.