Austin Air Immunity Machine Replacement Filter FR444A

The Austin Air Immunity Machine Replacement Filter FR444A is made for the Immunity Machine Air Purifier and features an Advanced 8-Phase Filtration System. Also, for the first time, Austin Air owners can upgrade their existing standard units with the new Immunity Machine filter.

Fits These Austin Air Purifier Models:

• Austin Air Immunity Machine
• Austin Air Bedroom Machine
• Austin Air HealthMate
• Austin Air HealthMate Plus
• Austin Air Allergy Machine

Does NOT Fit:

• Austin Air Junior models
• Austin Air Personal Air Purifiers

Next-Level Protection for Your Purifier - Designed for individuals with delicate or suppressed immune function, people living in newly built or recently renovated homes, or anyone routinely exposed to airborne pollutants and viral threats in busy environments such as classrooms, medical facilities, or shared office spaces, this replacement filter delivers an upgraded layer of protection to your purifier.

For the first time, Upgrade your Existing Austin Air Standard Unit with the New Immunity Machine Filter for next level advanced 8-phase filtration. Designed specifically for standard model Austin Air purifiers (not compatible with Junior models), this next-generation filter provides enhanced protection against a wider range of airborne contaminants. By upgrading to the Immunity Machine filter, you’re choosing the most comprehensive, immune-supporting air purification system available, delivering cleaner, healthier air and long-lasting protection for you and your family.

In contrast to standard filters that primarily capture dust and larger particles, the Immunity Machine Replacement Filter reaches Beyond Conventional Particle Filtration. It is specifically engineered to neutralize chemical vapors, volatile organic compounds (VOCs), harmful gases, viruses, bacteria, and ultrafine matter. The result is an air environment that is cleaner, safer, and more supportive of overall immune health-keeping your purifier operating at peak performance for whole-spectrum protection in both home and workplace settings.

This state-of-the-art filter employs an Advanced 8-Phase Filtration System, merging eight distinct layers of filtration into one powerful sequence. It combines hospital-grade HEPA, military-grade HEGA carbon, and a four-component granular blend of carbon, potassium iodide-impregnated carbon, zeolite, and enhanced impregnated zeolite. Together, these elements ensure an exceptionally broad defense against the widest spectrum of airborne contaminants.

• Phase 1: Large Particle Prefilter - Initial Protective Barrier - This first line of defense removes larger visible particles such as dust, strands of pet hair, and coarse dander. By intercepting these contaminants early, it prevents inner filters from becoming clogged, sustains the purifier’s efficiency, and leaves the surrounding air visibly cleaner.
• Phase 2: Medium Particle Prefilter - Allergen-Targeted Defense - This secondary stage captures smaller airborne irritants like pollen, mold spores, and common allergens. These are frequent triggers for respiratory irritation in asthma sufferers, allergy-prone individuals, and children, making this level a vital safeguard for sensitive users.
• Phase 3: Activated Carbon - Odor & Household Gas Absorption - A dense bed of activated carbon granules is employed to eliminate lingering odors from pets, cooking, and smoke while also adsorbing everyday gases and vapors. This ensures fresher and cleaner air throughout your living space.
• Phase 4: Potassium Iodide-Impregnated Carbon - Superior Chemical Neutralization - This specialized layer, enhanced with potassium iodide, directly targets harsh chemical pollutants including formaldehyde, VOCs, and byproducts released by building materials, wildfire smoke, and strong cleaning chemicals. It provides a reinforced barrier against stubborn toxins that standard carbon cannot fully manage.
• Phase 5: Zeolite - Dedicated Gas Detoxification - As a natural mineral filtration medium, zeolite complements carbon by absorbing gases like ammonia and other challenging airborne contaminants. This adds an extra dimension of chemical defense to the system’s multi-layer design.
• Phase 6: Proprietary-Impregnated Zeolite - Nitrogen Compound Reduction - This upgraded zeolite layer is fortified with proprietary compounds that specifically bind to nitrogen-based pollutants, including Nitrogen Dioxide (NO2). Such toxins are common in vehicle emissions, industrial smog, and gas appliances, giving this stage vital importance in urban or high-traffic environments.
• Phase 7: Medical-Grade HEPA - Ultra-Fine Particle Filtration - Built with true hospital-grade HEPA, this layer captures 99.97% of particles ≥0.3 microns and up to 99% of particles as small as 0.1 microns. Bacteria, viruses, allergenic fragments, mold spores, and even microplastics are removed, creating medical-level air purity inside your home or workspace.
• Phase 8: Military-Grade HEGA (High-Efficiency Gas Adsorption) - Final Protective Barrier - The last phase integrates military-grade HEGA carbon cloth, a material developed for military protective gear against CBRN (chemical, biological, radiological, and nuclear) exposure. This stage neutralizes hazardous gases, captures ultra-fine pollutants, and deactivates viral threats, completing the most thorough and powerful purification system available today.