Austin Air Immunity Machine Replacement Filter FR444A

The Austin Air Immunity Machine Replacement Filter FR444A is designed for the Immunity Machine but can also upgrade your existing standard model purifier with the full strength of their most advanced 8-phase filtration system. Compatible with Austin Air Immunity Machine, Bedroom Machine, HealthMate, HealthMate Plus, and Allergy Machine models. The powerful Austin Air Immunity Machine filter is engineered to last five years under normal residential conditions.

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

Their Next-Level Protection for Your Purifier is perfect for individuals with sensitive or compromised immune systems, those living in recently built homes, or anyone regularly exposed to chemical pollutants and viruses in shared spaces like classrooms, clinics, or offices. This filter brings elevated protection to your current unit.

Upgrade Your Current Air Purifier with the Austin Air Immunity Machine replacement filter and take your home or office air quality to the next level with 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.

Unlike conventional filters that focus only on dust and visible particles, the Immunity Machine Replacement Filter goes Beyond Standard Particle Filtration and is engineered to neutralize gases, volatile organic compounds (VOCs), viruses, bacteria, and ultrafine particles. The result is cleaner, safer air that sustains your purifier’s ability to provide true, whole-spectrum protection for your home or workplace.

This next-generation replacement filter integrates eight layers of defense in the form of an Advanced 8-Phase Filtration System, including medical-grade HEPA, military-grade HEGA carbon, and a four-part granular blend of carbon, impregnated carbon, zeolite, and enhanced impregnated zeolite. Together, these components deliver the broadest spectrum of contaminant removal available today.

• Phase 1: Large Particle Prefilter – Primary Barrier of Protection – This initial stage intercepts and captures larger airborne debris such as visible dust, strands of pet hair, and coarse dander. By removing these contaminants early, it prevents clogging of the inner filtration media, maintains the purifier’s peak operating efficiency, and ensures that the air in your environment appears cleaner to the eye.
• Phase 2: Medium Particle Prefilter – Targeted Allergen Control – The second stage is designed to trap smaller airborne irritants, including pollen grains, mold spores, and other fine allergens. These particles are common triggers for respiratory flare-ups, particularly in children, allergy sufferers, and individuals managing asthma, making this filter stage an essential line of respiratory defense.
• Phase 3: Activated Carbon – Everyday Odor & Gas Removal – This phase employs a dense bed of activated carbon granules to adsorb and eliminate common household odors originating from cooking, pets, and smoke. It simultaneously captures a wide range of low-level gases and chemical vapors, delivering fresher, cleaner air throughout the indoor space.
• Phase 4: Potassium Iodide-Impregnated Carbon – Enhanced Chemical Breakdown – Formulated with potassium iodide, this specialized carbon stage targets and neutralizes more stubborn and hazardous compounds such as formaldehyde, volatile organic compounds (VOCs), and other harmful byproducts often released from building materials, wildfire smoke, and aggressive cleaning products.
• Phase 5: Zeolite – Focused Gas Detoxification – Zeolite, a naturally occurring mineral filtration medium, expands chemical absorption capabilities by capturing gases that activated carbon alone cannot effectively manage. This includes substances like ammonia and other problematic contaminants, adding depth to the system’s layered protection strategy.
• Phase 6: Proprietary-Impregnated Zeolite – Advanced Nitrogen Compound Neutralizer – Further reinforced with proprietary compounds, this zeolite layer specifically binds to nitrogen-based pollutants such as Nitrogen Dioxide (NO2). These harmful emissions commonly stem from vehicle exhaust, urban smog, and gas-burning appliances, ensuring a broader and more robust shield against environmental toxins.
• Phase 7: Medical-Grade HEPA – Critical Fine Particle Filtration – Utilizing hospital-grade HEPA media, this stage captures 99.97% of airborne particles ≥0.3 microns and up to 99% of particles down to 0.1 microns. This includes bacteria, viruses, mold fragments, allergens, and even microplastics, delivering air quality that approaches medical and laboratory standards of purity.
• Phase 8: Military-Grade HEGA (High-Efficiency Gas Adsorption) – Comprehensive Final Shield – The concluding phase integrates military-grade HEGA carbon cloth, a material originally engineered for protective military gear against chemical, biological, radiological, and nuclear threats. This technology provides the ultimate safeguard by neutralizing hazardous gases, disabling viruses, and capturing ultra-fine particulates, completing the system’s unmatched purification performance.

Product Features:

• Provides advanced protection for individuals with weakened or compromised immune systems
• Supports those managing autoimmune disorders with cleaner, safer air
• Reduces exposure to harmful chemicals often found in newly built or recently renovated homes
• Delivers safe, purified air for classrooms, daycares, and other shared learning spaces
• Shields people working or living in consistently high-exposure environments
• Neutralizes formaldehyde, VOCs, and other everyday chemical irritants
• Offers maximum defense against airborne viruses while maintaining a chemical-free indoor environment
• Compatible with the Austin Air Immunity Machine, Bedroom Machine, HealthMate, HealthMate Plus, & Allergy Machine
• Lasts up to 5 years under normal use, making it one of the longest-lasting filters on the market
• Includes a 5-year Manufacturer's Warranty