Trap in a never-ending loophole surrounded by pollutants? Highly sensitive to dust, plant pollen or other seasonal allergens? Regularly stuck with running nose or sneezing? If those are the common symptoms you suffer, Austin Air Allergy Machine HM405 is the perfect solution to you. Catered to allergy sufferers, Austin Air Allergy Machine is designed to stop regular or seasonal allergens from harassing you from your daily life thanks to the one and only HEGA filter (High-Efficiency Gas Absorption) that we will touch on later.
[STAGE 4] Activated military carbon cloth (HEGA) filter
3 fan speeds
Long-lasting filters that could last up to 5 years depending on usage
5 years manufacture defect warranty
Austin Air Allergy Machine review
Activated military grade carbon HEGA filter that is great for people that are sensitive to allergens.
Consistent airflow with wide purifying coverage.
Comprehensive filtration thanks to the trio pre-filter and reliable 60 sq. ft. certified HEPA filter.
No off-gassing as the exterior is made entirely from powdered coated steel.
Long-life (up to 5 years), low maintenance cost filter.
5 years warranty.
Clearly audible noise level that is not great for night use.
Lighter but overall still bulky that requires casters support.
Hassle filter change from bottom rather than pop out cover.
Empty on features. Lacks auto/ sleep mode, air quality sensors, digital screen indicator and timer.
14.5 x 23 x 14.5 in
(36.8 x 58.4 x 36.8 cm)
33.1 lb (15 kg)
Austin Air Allergy Machine boxy exterior has the exact same dimension with every other Austin Air air purifier at 14.5 x 23 x 14.5 in. Weight is slightly lighter at 33.1 lb, you would still need to rely on the 4 casters to move the air purifier around. Usability is a bit of mix bag; front dial knob fan speed is super easy to use however, the lack of any practical features such as air quality sensor, auto mode, filter indicator hinder the air purifier overall usability. On to the specification, what’s included in the package is a 4-stage filtration, 5 years all-in-one filter lifespan, 360° progressive Intake System, NRTL (Nationally Recognized Testing Laboratory) recognized, CSA (Canadian Standards Association) and CE (Conformité Européenne) approved, no ozone emitted and 5 years warranty.
Airflow, speed, and CADR
1500 sq. ft. (139 m2)
72 - 400 cfm (122 - 680 m3/h)
Powered by the excellent all-round 360° progressive system with 72-400 cfm airflow delivery rate, Austin Air Allergy Machine has an impressive purifying applicable area up to 1500 sq. ft. that can cover almost any sizes of room including the living hall. Compare with other standard Austin Air purifiers, expect equivalent airflow performance and purifying coverage.
What’s inside count
Large Particle Pre-filter
60 sq.ft. True Medical Grade HEPA
Activated Military Carbon Cloth
Medium Particle Pre-filter
^ Austin Air Allergy Machine filters/ technologies/ lifespan
Austin Air Allergy Machine 4-stage filtration is excellent for people suffering from asthma and allergies. The first stage filtration consists of outer mesh filter and inner pre-filter that would trap large particles such as pet hair. The 2-stage medium filter would, of course, capture medium size particles while the 3-stage HEPA filter would trap even smaller airborne particles. Finally, Allergy Machine High-Efficiency Gas Absorption (HEGA) filter would trap odor and gas-based allergens that often linked to household contaminants.
Hair/ Pet hair
Without a doubt Austin Air Allergy Machine 4-stage filtration is highly efficient when take on common and micron size contaminants, allergens, viruses and bacteria. Made possible by ultra-powerful airflow distribution and wide purifying coverage, Austin Air Allergy Machine combined filtration is exceptional in eradicating hair, dust, pet dander, dust mites, fungi, pollen, mildew, mold, spores and germs. On handling odors and smokes, Austin Air Allergy Machine is also exceptional against cooking odors, radon, ammonia chemicals, VOCs, tobacco and cigarette smokes.
Keep it down
40 - 65 dB
Austin Air Allergy Machine 40 - 65 dB noise is far from subtle and generally not suitable for night use. Without sleep mode or silent mode, the only way to prevent the air purifier from making too much noise is to place it as far as possible so long it's within its purifying range. On another note, 132 W power consumption is average for this segment air purifier.
At what cost
Annual Filter Cost
^ Replacement filters/ estimated cost
Austin Air Allergy Machine is not cheap to begin with, the lack of any practical features is a further blow on the air purifier overall value. Filter replacement is another story as Austin Air Allergy Machine offer one of the lowest filter replacement cost in its class thanks to the extra-long filter lifespan. Not only you will save tons of money on the filter replacement, but you would also only have to deal with the hassle filter replacement every couple of years.
The ultimate version that comes with 5-stage filtration including 15 lbs. Activated Carbon and Zeolite and HEGA filter. It's also the most expensive unit in Austin Air lineup.
Verdicts and ratings
Frequently Asked Questions FAQ
More on Austin Air HM405
Smooth in design with a focus on comprehensive filtration, Austin Air HM405 is similar to every other Austin Air air purifier with a standard dimension and weight. Built on powder lined finish steel exterior, the body consists of a 360° progressive filtering intake system supported by the non-fancy 3 dial fan speeds knob. Inside of Austin Air Allergy Machine is the powerful 4-stage filtration system that consists of 2 back to back pre-filters, medical-grade HEPA filter, and all new High-Efficiency Gas Absorption (HEGA) filter. The HEGA filter is an activated carbon cloth that is placed at the last stage of the 4-stage filtration and it has the same filtration quality used in military or hospital. It is extremely effective in handling chemicals, gases, and odors and the carbon cloth does not create any dust thus prevent the filter from being cluttered up with existing particles.
Applicable area, airflow, noise level and power consumption
As with most Austin Air air purifier, Austin Air HM405 has an applicable area of 87 m2 (938 sq. ft.) with 2 airflow charges released hourly. Placing the HEGA after HEPA filter enables Austin Air Allergy Machine to remove the most irritant allergens and odors (typically cigarette smoke) that could trigger serious respiratory allergies. At a consistent airflow delivery rate, you can expect a swift purifying speed within the air purifier surrounding. Noise level is at 39.8 dB minimum to 64.5 dB maximum; not great but acceptable, the power consumption level is standard at 115 watts.
Final thoughts on Austin Air HM405
Compare with HealthMate series, Austin Air HM405 is more efficient in gases, chemicals, and odors control all because of the inclusion High-Efficiency Gas Absorption (HEGA) activated military carbon cloth filter. The additional filter is extremely handy as an allergy or asthma relief typically for people that are sensitive to allergens. We would also recommend Austin Air Allergy Machine to people that are constantly surrounded by smokers so you can breathe more freely.