Choose options
Austin Air Immunity Machine Replacement Filter
Your air purifier just got a serious upgrade.
This replacement filter brings Austin Air's most advanced 8-phase filtration system to your existing purifier — delivering next-level protection against the full spectrum of airborne threats, from everyday dust and pollen to viruses, VOCs, and ultrafine particles.
Designed for anyone who takes their air quality seriously — whether you have immune vulnerabilities, live in a new construction home, or spend time in high-traffic spaces like classrooms, clinics, or shared offices — this filter transforms your current unit into a comprehensive immune-supporting powerhouse.
And the best part? With a filter life of up to five years, it's one of the most cost-effective investments you can make in your home's air quality. No constant replacements, no ongoing hassle — just five years of clean, healthy air.
8 Phases of Protection. Nothing Gets Through.
Phases 1 & 2 — Prefilters Capture visible dust, pet dander, pollen, and mold spores right at the source, keeping your air cleaner and your core filters working at peak efficiency.
Phases 3–6 — Four-Part Granular Defense A powerful blend of carbon, impregnated carbon, mineral-based filtration, and impregnated mineral-based filtration works together to adsorb odors, VOCs, formaldehyde, ammonia, nitrogen dioxide, and other harmful gases. Unmatched chemical and gaseous pollutant protection.
Phase 7 — Medical-Grade HEPA Certified to capture 99.97% of airborne particles down to 0.3 microns and 99% down to 0.1 microns — including viruses, bacteria, allergens, and microplastics.
Phase 8 — Military-Grade HEGA Carbon Cloth Originally engineered for chemical, biological, and nuclear defense. Eliminates the most dangerous ultrafine contaminants that other filters simply miss.
Compatible With These Austin Air Models
- Austin Air Immunity Machine
- Austin Air Bedroom Machine
- Austin Air HealthMate
- Austin Air HealthMate Plus
- Austin Air Allergy Machine
Upgrades all standard models to full 8-phase filtration.
Does Not Fit
- Austin Air Junior models
- Austin Air Personal Air Purifiers
The Most Complete Air Purification Available. Eight filtration phases. One filter. Cleaner, healthier air for the life you're building at home.