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Allergy Machine HM405 Standard HEPA Air Purifier

Best for:

*This air purifier is best for extremely damp environments. For asthma and allergy sufferers, check out our HealthMate HM400 air purifier
• Specialty air cleaner with 60 sq. ft. of medical HEPA (MERV-17), certified to remove 99.97% of airborne particles 0.3 microns and larger. Contains activated carbon cloth for the adsorption of odors, gasses and chemicals. Comes with wheels for easy portability. Effectively cleans an area of 1500 sq. ft. (with normal ceiling heights).

Unit size: Stands 23” tall x 14.5” wide x 14.5″ wide

Who should consider the Austin Air Allergy Machine? 

- Those exposed to biologics such as viruses and bacteria
- Those living in damp environments
- Asthmatic Children

Benefits of Clean Air

- Lessens night time allergies and asthma attacks
- Strengthens the immune system
- Eases coughing, wheezing and sneezing
- Reduces dry mouth and runny nose
- Sounder sleep
- Reduced snoring

Why is the Allergy Machine the best choice for me?

-Designed for immediate filtration of allergens
- High capacity filtration for removing allergens, chemicals and gases from the air
- Designed for relief of sneezing, coughing and stuffy noses caused by every day or seasonal allergies.

A truly medical grade, HEPA air purifier.
Breathe easy with Austin Air

Trusted By:

360-Degree Progressive Filtering System

The Allergy Machine® provides relief for those suffering from asthma or every day and seasonal allergies by removing sub-micron particles such as pollens and dust mites as well as chemicals and noxious gases. Austin Air’s 360-degree intake system draws air into all sides of the Allergy Machine®, passing it through a 4-stage filter.

The result? In a third party study, results showed less emergency room visits for asthma and allergy sufferers.

Stage 1

Large Particle Pre-filter Removes particles easily seen by the (e.g.dust, hair and pet dander)

Stage 2

Medium Particle Pre-filter Removes small to medium size particles (e.g.molds, spores and pollen)

Stage 3

60 sq. ft. of True Medical Grade HEPA. Removes 99.97% of all particles larger than 0.3 microns and 95% of all particles larger than 0.1 microns (MERV-17 Rating).

Stage 4

Military-Grade HEGA Carbon Cloth. HEGA (High Efficiency Gas Arrestance), providing an extremely large surface area for adsorption of chemicals, gases, viruses and bacteria.

Why is the Austin Allergy Machine the best choice?

The Austin Air Allergy Machine® was developed specifically for people with asthma and allergies. Its unique design increases air flow, filtering allergens from the air immediately. In clinical trials the Austin Air Allergy Machine® was shown to dramatically reduce hospital visits for young asthmatic children.

The Allergy Machine HM405 is Best at Filtering


Learn More Dust is a fine, dry powder consisting of tiny particles of earth or waste matter lying on the ground or on surfaces or carried in the air.


Learn More Microparticles are particles between 0.1 and 100 m in size. Microparticles encountered in daily life include pollen, sand, dust, flour, and powdered sugar.

Particles (2.5PM)

Learn More A minute portion of matter. PM2 . 5 refers to atmospheric particulate matter (PM) that have a diameter of less than 2.5 micrometers, which is about 3% the diameter of a human hair. Commonly written as PM 2.5 , particles in this category are so small that they can only be detected with an electron microscope.


Learn More Pollen is a fine to coarse powdery substance comprising pollen grains which are male microgametophytes of seed plants, which produce male gametes (sperm cells).


Learn More As mold spores range between one and five microns in size, HEPA filters are certified and proven to remove all airborne mold spores. Every Austin air purifier contains a HEPA filter and can help to effectively eliminate mold.

Our Commitment To You

Backed by the best warranty in the industry, you can take pleasure in knowing you’ve made a sound investment with your Austin Air purifier

30 Day, No Questions Asked,
Money Back Guarantee

In the unlikely event that you’re not completely satisfied with your Austin Air purifier, return it within 30-days, no-questions-asked.

* Please contact your Austin Air dealer for their return policy.

5 Year Limited Warranty

Backed by the best warranty in the industry, you can take pleasure in knowing you’ve made a sound investment with your Austin Air purifier. In the event of a malfunction or failure of the Austin Air purifier, the purchaser should contact Austin Air Canada. If the malfunction or failure is a result of defects covered by our warranty, Austin Air Canada will, at its option, repair or replace the Austin Air purifier and return it to the purchaser.

5 Year Pro-Rated Filter Warranty

Austin Air offers a 5-year pro-rated filter warranty, by far the most comprehensive in the industry. No more costly filter replacements every few months or even years. Austin Air filters are designed to last for an amazing 5-years, under normal residential use.


Available in Four Attractive Colours



Midnight Blue


Technical Specifications


DIMENSIONSDimensions: 14.5" W x 14.5" D x 23" H
CONSTRUCTION23 gauge steel housing, 23 gauge perforated steel intake, Easy roll casters (standard), Baked on powder coat finish (no off-gassing)
MOTORPermanent, split capacitor motor, rated for continuous high RPM, long life duty, shock absorbing motor mounts, CSA & UL approved
FANPlastic centrifugal fan, Three speed control: 200 CFM on high setting, 100 CFM on medium setting, 50 CFM on low setting
132 – watt, 1.3 amp power consumption on high setting
82 – watt, 0.71 amp power consumption on medium setting
56 – watt, 0.51 amp power consumption on low setting
SOUND LEVEL65 Db at high speed, 55 Db at medium speed, Lower than 40 Db at low speed
FILTER ASSEMBLYDimensions: 13.5 in. diameter, 14.5 in. height
Permafilt™ pre-filter
Special layer of military-grade carbon cloth (HEGA)
60 square feet True Medical HEPA grade filter medium (MERV-17 Rating).
Metal end caps with foam sealing gaskets top and bottom
Total weight of 13 lbs