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.
