Austin Air Immunity Machine Air Purifier
- The widest coverage in one filter: 8 phases of filtration media
- The widest coverage in one filter: 8 phases of filtration media
- Gases most units miss: impregnated zeolite targets nitrogen dioxide
- Particles handled: medical grade HEPA plus a HEGA carbon cloth
- Low upkeep: one filter designed to last up to 5 years
Four kinds of adsorption media, not two
Most carbon purifiers use one or two granular media. The Immunity Machine uses four: plain and impregnated carbon, and plain and impregnated zeolite. Each holds a different class of gas, so together they cover VOCs, formaldehyde, ammonia and nitrogen based gases that a single carbon bed lets through. HEPA and a HEGA cloth sit behind them for particles.
It is an air purifier that filters the air in a room; it is not a medical device and does not treat, cure, or prevent any condition.
Free delivery, estimated in 3–8 business days. No sales tax.
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Recommended pairing
All eight phases of the Immunity Machine live in one cartridge, and its adsorption media fill with use. A genuine replacement on hand restores the full range in minutes, no tools needed.
Austin Air Immunity Machine Air Purifier
$1,144.99
Austin Air Immunity Machine Replacement Filter
$694.99
Description
The Immunity Machine is Austin Air's most comprehensive purifier, with eight types of filtration media in a single filter. It is built for homes where chemicals and gases are the bigger worry: new construction, gas stoves, busy roads, shared spaces.
Air passes through eight phases. Two prefilters catch hair, dust and pollen. Activated carbon, potassium iodide impregnated carbon, zeolite and an impregnated zeolite adsorb odors, VOCs, formaldehyde, ammonia and nitrogen based gases such as nitrogen dioxide. Medical grade HEPA captures 99.97% of particles at 0.3 microns and 99% at 0.1 microns, and a HEGA carbon cloth finishes the job.
Why it belongs in your stack: if you want the widest coverage of what is in your indoor air from one unit, this is the most thorough filter Austin Air makes.
Built in a graphite steel cabinet with casters and a filter designed to last up to 5 years. It belongs to the Elevate layer of the Kove stack: the environment you recover in.
Is this right for you?
You'll get the most from it if
- You want the most comprehensive Austin Air filter in a single unit.
- Your home is new or recently renovated, or you cook on a gas stove.
- You live near heavy traffic or spend time in shared, busy spaces.
- You prefer a simple dial over apps, sensors or WiFi.
Maybe look elsewhere if
- Dust, pollen and general air quality are your main goals; the HealthMate covers those for less.
- You want a choice of colors; the Immunity Machine comes in graphite only.
Specifications
| Phase 1 | Large particle prefilter: catches dust, hair and pet dander |
|---|---|
| Phase 2 | Medium particle prefilter: catches smaller particles such as pollen and mold spores |
| Phase 3 | Activated carbon: adsorbs odors from pets, cooking and smoke, plus common gases |
| Phase 4 | Potassium iodide impregnated carbon: targets chemicals such as formaldehyde and VOCs |
| Phase 5 | Zeolite: mineral media that adsorbs gases such as ammonia |
| Phase 6 | Impregnated zeolite: holds nitrogen based gases such as nitrogen dioxide from smog and gas appliances |
| Phase 7 | 60 sq ft medical grade HEPA: 99.97% at 0.3 microns, 99% at 0.1 microns |
| Phase 8 | HEGA carbon cloth (high efficiency gas adsorption): a final layer for remaining gases and ultrafine particles |
| Room size | Larger rooms; manufacturer suggested up to 1,500 sq ft |
| Airflow | Up to 250 CFM on high, 3 speeds |
| HEPA | Medical grade HEPA; 99.97% at 0.3 microns, 99% at 0.1 microns |
| Adsorption | Activated carbon, potassium iodide impregnated carbon, zeolite, impregnated zeolite, HEGA carbon cloth |
| Prefilters | Large particle and medium particle prefilters |
| Sound | Under 50 to 65 dB, depending on speed |
| Power | Standard 120V outlet |
| Housing | Graphite steel with baked powder coat, 360° intake, casters |
| Dimensions | 14.5 × 14.5 × 23 in |
| Weight | 47 lb |
| Filter life | Up to 5 years in normal home use |
| Certified | CSA approved; no ozone or ionization |
| Model | HM444 |
| Made | Handcrafted in Buffalo, NY |
| Warranty | 5 year mechanical once you register the unit with Austin Air (keep your receipt) · 5 year prorated filter |
| Manual | Immunity Machine owner's manual (PDF) |
How to use
- PlacementAnywhere in the room, at least 4 in from the wall; air is drawn in from all four sides
- First runStart on high for a few hours, then settle on the speed you are comfortable with
- KitchenWith a gas stove, run it near the kitchen while you cook
- UpkeepVacuum the outer screen about once a month
- FilterReplace when you notice an odor from the unit or a clear drop in airflow, typically up to 5 years
Shipping & delivery
Free shipping within the United States on every order. Most orders ship within a few business days, and you will receive tracking as soon as your order is on its way. Larger items may ship freight with a delivery appointment.
Warranty & returns
5 year limited warranty on the motor, fan and working parts, plus a 5 year prorated filter warranty.
Not the right fit? You have 60 days from delivery to send it back. Reach out to our team, we will email you a prepaid return label and the right address, and refund you once it arrives. Items need to come back in their original packaging. Prefer to exchange it for something else? We handle that at no extra cost.
Cancel free of charge any time before your order ships. If anything arrives damaged, send us photos of the item, the box and the SKU within 24 hours and we will sort it out for you.
See our Return Policy for full details.
Why we chose it. Most purifiers focus on either particles or gases. The Immunity Machine runs eight media in one filter, so dust, VOCs, formaldehyde and gases like nitrogen dioxide are all covered by one quiet unit. There's nothing to set up beyond a dial.
Choose options
Compare the full size line
Which full size Austin Air?
 HealthMate
$844.99View |  HealthMate Plus
$894.99View |  Bedroom Machine
$994.99View | You are viewing Immunity Machine
$1,144.99Viewing | |
|---|---|---|---|---|
| Best for | Everyday dust, pollen and odors | Smoke, VOCs and off gassing | Sleep, with extra gas protection | The widest range of gases |
| Filter stages | 4 | 4 | 5 | 8 |
| Adsorption | About 15 lb carbon and zeolite | About 15 lb, with impregnated carbon | About 15 lb carbon and zeolite | Carbon, impregnated carbon, zeolite and impregnated zeolite |
| HEGA cloth | Not included | Not included | Included | Included |
| Airflow | Up to 400 CFM | Up to 400 CFM | Up to 250 CFM | Up to 250 CFM |
| Colors | 4 colors | 4 colors | 4 colors | Graphite |
- Best for
- Everyday dust, pollen and odors
- Filter stages
- 4
- Adsorption
- About 15 lb carbon and zeolite
- HEGA cloth
- Not included
- Airflow
- Up to 400 CFM
- Colors
- 4 colors
- Best for
- Smoke, VOCs and off gassing
- Filter stages
- 4
- Adsorption
- About 15 lb, with impregnated carbon
- HEGA cloth
- Not included
- Airflow
- Up to 400 CFM
- Colors
- 4 colors
- Best for
- Sleep, with extra gas protection
- Filter stages
- 5
- Adsorption
- About 15 lb carbon and zeolite
- HEGA cloth
- Included
- Airflow
- Up to 250 CFM
- Colors
- 4 colors
- Best for
- The widest range of gases
- Filter stages
- 8
- Adsorption
- Carbon, impregnated carbon, zeolite and impregnated zeolite
- HEGA cloth
- Included
- Airflow
- Up to 250 CFM
- Colors
- Graphite
Choose the HealthMate for everyday air, the Plus for smoke and chemicals, the Bedroom Machine for sleep, or the Immunity Machine for the widest coverage. All four share a 14.5 by 14.5 by 23 inch steel cabinet on casters, 60 sq ft of medical grade HEPA, a filter designed to last up to 5 years and a 5 year warranty.
