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Austin Air Allergy Machine Air Purifier (HM405)

Price: $574.99
  • FREE 3 Day Express Shipping
  • Product Overview

    Are you struggling to find relief from your allergy and asthma symptoms? Let Austin Air help with the allergist-recommended Austin Air Allergy Machine Air Purifier. Using a combination of particle and odor filtration, the Allergy Machine quickly removes the most common allergy and asthma triggers from your environment—before they lead to an attack. The Austin Air Allergy Machine:

    • Is designed to help relieve your allergy and asthma symptoms
    • Cleans the air in large spaces measuring up to 1,500 square feet
    • Removes dust, pollen, tobacco smoke, chemical vapors, gases, viruses, bacteria, and more
    • Traps 99.97% of particles as small as 0.3 microns and 95% of particles that measure 0.1 micron and smaller
    • Generally requires a filter replacement only once every 5 years
    • Needs minimal routine maintenance

    Powerful Filtration to Stop Your Symptoms

    The Austin Air Allergy Machine Air Purifier produces healthy, allergen-free air to relieve your symptoms using a 360-degree filtering system and a revolutionary HEPA/HEGA combination filter. This progressive filtration system is designed to deliver clean air faster and more efficiently than other air purifiers.

    Every minute, the system pulls in more than 250 cubic feet of air from all sides of the air cleaner. Air then passes through the HEPA/HEGA filter and is blown back out into the room through the Clean Air Pocket. Using this technology, you’ll gain quicker relief for your symptoms, and you’ll maintain that relief for longer periods of time. This is especially useful during the overnight hours.

    At the core of the Austin Allergy Machine is a cylindrical-shaped air filter that cleans the air in 4 stages:

    • PERMAFILT Pre-Filter - During stage 1, air passes through a cotton PERMAFILT pre-filter, which captures particles easily seen by the naked eye, such as large dust and pet dander particles.

    • Medium Particle Filter - Next, a medium particle filter traps small- to medium-size allergens, such as mold, pollen, and dust mites.

    • Medical-Grade HEPA Filter - Next, air glides through 60 square feet of true medical-grade HEPA (High Efficiency Particulate Air) material where it is scrubbed free of harmful bacteria and viruses as well as smaller pollen, mold, pet dander, dust, and ragweed particles.

    • HEGA Filter – During the final stage, a HEGA (High Efficiency Gas Absorption) filter constructed of military-grade activated carbon cloth absorbs chemicals, gases, fumes, vapors, and odors. HEGA filtration is particularly effective in removing harmful volatile organic compounds (VOCs).

    Overall, this long-lasting combination filter eliminates 99.97% of airborne pollutants that are 0.3 microns and larger, 95% of particles that measure 0.1 micron and smaller, and more than 3,000 types of toxic gases and odors. You'll rest easy knowing that you and your family are breathing the cleanest, allergen-free air possible.

    Durable Construction for Years of Clean Air

    Made in the USA

    Made in the USA, the Austin Air Healthmate Allergy Machine Air Purifier is constructed with sturdy, long-lasting components that boost efficiency and energy savings. These include an energy-efficient Permanent-Split Capacitor (PSC) motor, a powerful centrifugal fan, and an all-steel outer body. The long-life PSC motor is rated for continuous use at high RPMs and is mounted on shock absorbers to minimize noise. When running, the Allergy Machine motor draws less current and reduces your operating costs by 50% when compared to other air purifiers.

    Additional Features

    • Easy Controls - Choose from 3 purification speeds using the simple manual knob control.

    • Independently Tested - Like all Austin Air Purifiers, the Allergy Machine has been independently tested for filtration effectiveness by third-party and U.S. government labs.

    • Easy Filter Changes - Just remove the bottom cover of the air purifier to access the old filter and drop a new one in.

    • Smooth-Roll Casters - Roll your air purifier from spot to spot for clean air throughout your home.


    The Austin Air Allergy Machine helps relieve mild to severe allergy and asthma symptoms, creating a healthier and more comfortable environment for you and your family.

    What Customers Love

    • Easy to Use - No complicated control panels, the Allergy Machine includes 1 manual knob control to adjust your fan speed and turn the unit on and off.
    • Long-Life Filter - The combination HEPA/HEGA filter needs to be replaced only once every 5 years under typical use to help save you money on costly filter replacements.

    Things to Consider

    • Chemical Control - Consider if you need a higher level of odor and chemical filtration. If so, you may want to upgrade to the Austin Air Healthmate Plus.

    Manufacturer's Warranty

    5-year mechanical; 5 year pro-rated filter warranty

    Manufacturer's Literature

    Owner's Manual
    Owner's manual for the Austin Air Allergy Machine Jr. Air Purifier.
    Austin Air Purifier Filter Change Instructions
    Easy, step-by-step instructions for changing your Austin Air purifier filter.

    What's In The Box?

    • Austin Air Allergy Machine Air Purifier
    • Product Literature

    View All Air Purifiers »
  • Specifications

    Manufacturer-Suggested Room Size (sq. ft.)1500 sq. ft.
    Maximum Room Size for 4 Air Changes Per Hour 750 sq. ft.
    Recommended ForAllergies, Asthma, Multiple Chemical Sensitivity
    Best Fit Ideal for allergy- and asthma-sufferers
    Height23 in.
    Width14.5 in.
    Depth14.5 in.
    Weight33 lbs.
    Filtration SystemCarbon Filter, Military-grade carbon cloth, HEPA Filter, 60 sq. ft. of true medical-grade HEPA, Pre-Filter, Large particle pre-filter
    Pre-Filter TypeLarge particle pre-filter
    HEPA Filter Type60 sq. ft. of true medical-grade HEPA
    Amount of CarbonMilitary-grade carbon cloth
    Number of Filters to Change1
    Pre-Filter5 years
    HEPA Filter5 years
    Carbon Filter5 years
    Number of Fan Speeds3
    Amount of Air Moved (Max CFM)400 CFM
    Minimum Noise Level50 dB
    Maximum Noise Level66 dB
    Filter Change IndicatorNo
    Programmable TimerNo
    Remote ControlNo
    ColorTan, Black, White, Silver, Blue
    Amperage1.3 Amps
    Minimum Wattage56 W
    Maximum Wattage115 W
    Voltage110-120 V
    Energy StarNo
    Ozone EmissionNone
  • Product Q&A

    Important FAQ information and shipping/payment details
  • Reviews

    View All Austin Air Allergy Machine Air Purifier (HM405) Reviews


    by PowerReviews
    Austin Air Allergy Machine Air Purifier (HM405)

    (based on 8 reviews)

    Ratings Distribution

    • 5 Stars



    • 4 Stars



    • 3 Stars



    • 2 Stars



    • 1 Stars



    Reviewed by 8 customers

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    Displaying reviews 1-8

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    Impressive Performance

    By Mike

    from Denver, CO

    About Me Quality Oriented

    Verified Buyer


    • Affordable
    • Attractive Design
    • Effective Purification
    • User friendly


      Best Uses

      • Anywhere
      • Asthma Control
      • Larger Rooms
      • Living Room
      • Smaller rooms

      Comments about Austin Air Allergy Machine Air Purifier (HM405):

      Good for getting rid of tobacco odors. Great for minimizing dust, pollen. Our allergies and sensitivities went away after using the machine for a couple of weeks. Seems to also take car of the cats' dander.

      • Primary use:
      • Personal

      Love this Machine- no more puffy eyes

      By cat keeper

      from Sun city, Arizona

      About Me Quality Oriented

      Verified Buyer


      • Affordable
      • Attractive Design
      • User friendly
      • Use Year Round


      • A Little Noisey On High

      Best Uses

      • Anywhere

      Comments about Austin Air Allergy Machine Air Purifier (HM405):

      I have six lovely grown cats who live with me an my husband. While they are well mannered they also like to play. This unit keeps their dander down and hair from going just everywhere.. Plan to save up for another unit to put in the front of our house.

      • Primary use:
      • Personal

      (2 of 3 customers found this review helpful)



      By Kath

      from USA

      Comments about Austin Air Allergy Machine Air Purifier (HM405):

      I have a tenant that lives downstairs, very nice person, but he told me he smokes 3 packs of cigarettes a day, most of his work requires him to stay home, so my home really smelled of smoke all the time.. With your product I no longer have that smell. It helped me and I know it will help him also. My clothes don't even smell of smoke anymore. Thanks so much

      (1 of 1 customers found this review helpful)


      Bye-bye second hand smoke!

      By Joanne Jaffer

      from USA

      Verified Buyer

      Comments about Austin Air Allergy Machine Air Purifier (HM405):

      I live in a small condo above an even smaller one bedroom unit. Unfortunately, the tenant below me is a heavy smoker and chooses to smoke inside her unit with her windows closed. The smoke must have nowhere else to go because it is coming in to my unit. I needed an air purifier that would, most importantly, eliminate the second hand smoke that seeps up into my unit. I also have asthma and was hoping this purifier would help to lessen some of the allergens that trigger my asthma symptoms. The Allergy Machine Air Purifier does a great job eliminating the smoke odors. The only place I still smell smoke is in a closet, the door to which is kept closed. My allergy symptoms seem to be improving as well. The fact that my windows are now kept closed all the time due to the weather could be a factor, too.

      The unit is heavier than I anticipated. Fortunately it comes with casters making it quite easy to roll from one place to another. I am still able to carry it up a flight of stairs to my second floor bedroom if I want to. The constant fan sound provides a quiet white noise effect helping to drown out sounds from a busy neighborhood which is very welcome. In hindsight, I probably should have purchased two of the smaller units instead of the one larger unit. That way, I could have one unit on each floor.

      The fact that it is so low maintenance is such a bonus. Five years on one filter is impressive!

      I learned about Austin Air Purifiers from my daughter' father-in-law who purchased a unit for them to help deal with a mold issue they were having in their home. It is working beautifully for them. This gentleman is one who does his homework before making larger purchases such as these. I am very grateful that he did and that he shared the information with me.

      (1 of 1 customers found this review helpful)


      For our young son with multiple allergies

      By David Yee

      from USA

      Verified Buyer

      Comments about Austin Air Allergy Machine Air Purifier (HM405):

      I purchased this unit after considerable research for an air purifier that would help my son's allergies/eczema. From our perspective, this Austin Air offered the best value given the size of room it can treat and the portability (both weight of unit and use of casters). Since we were not as concerned about vapors vs airborn particulates (pollen, mold, dog dander and general household dust), this unit suited us best.

      This unit can not only work in his room, but we can use it downstairs in our living room when we use the fireplace, or are doing any light construction project which may cause more dust/debris. The unit is 35 pounds, which does not seem to be an issue for my wife, since she only carries it down the stairs and uses the casters the rest of the way.

      After using it for about a month now, I can confidently say I feel a difference in the air and my son seems to be itching and sneezing less as well. The air seems fresher, with any noticeable mustiness after an evening of sleep. We don't leave it on all day when we are not home, but setting the unit on Level 1 cleans out the room very quickly upon our return.

      I was concerned about the comments regarding the noise of the unit. But since my son usually sleeps with a white noise machine, he didn't mind at all. And if set on the lowest setting (at night), it's a pretty low sound.

      I cannot recommend this unit enough!

      (5 of 5 customers found this review helpful)


      One for each floor!

      By Anita Hilliard

      from USA

      Verified Buyer

      Comments about Austin Air Allergy Machine Air Purifier (HM405):

      I purchased two Allergy Machines almost exactly 5 years ago from Sylvane. They offered the best price anywhere on the internet. We had just learned our youngest of three children suffered from environmental inhalation allergies to "everything!" Dust, dogs, cats, pollen, grass, mold, and mildew were all strong triggers. My efforts to make the home a comfortable place for him included extensive research on the past home air filtration. We considered adding a system inline to our HVAC. In the end the Austin Air products were the best bang for the buck offering HEPA quality filtration and a large square foot effectiveness area.

      I wanted one filter for each floor of my home which is about 1400 square feet on each level. The low cost per square foot of clean air was one of the lowest I found. After running the two machines nonstop for the past 5 years on low or medium speed mostly, we have had absolutely no problems. I have opened the units about 3 times to vacuum off the prefilter and the outside of the main filter. I had forgotten the date of purchase, but was wondering if I needed to replace the filters as my son has been more congested lately when in the home. I got the date of my son's initial allergy testing from his allergist and assumed the purchase date was near the date they gave me, Spring 2007.

      I just recently received a postcard from Austin Air indicating the filters are due for replacement. I've been thinking it was at least 6 or 9 months early. Today I sent an inquiry to Sylvane to get the actual purchase date. It was September 2006!! It's been exactly 5 years! I am impressed with the Austin Air Allergy machine. It performs just as advertised. I am also impressed with Sylvane's customer service which was extremely prompt and I was provided with exactly what I needed the first time! I just placed an order with Sylvane for two replacement filters and pre-filters and am looking forward to another 5 years of trouble-free operation!

      (1 of 1 customers found this review helpful)


      Great Air Cleaner

      By Basil Panas

      from USA

      Comments about Austin Air Allergy Machine Air Purifier (HM405):

      After looking at many different websites and reviews on different air cleaners, I finally decided to go with the Austin Air Allergy Machine with HEGA filtration. I have to say that this is one of the best air cleaners I have ever owned.

      I love the fact that it has very little maintenance required and the filters last longer than some other air cleaners that you have to change every 6 to 12 months. My wife and I both have allergies and now we don’t wake up congested and we can breathe much easier throughout the night. The unit is built very well and is sturdy and moves around on the carpet with casters with no problems. I also like the fact that on any speed that it pushes out quite a bit of air. I also have a laser particle counter and can see the difference that this machine makes after running this for a couple of hours in our bedroom.

      Sylvane’s online ordering was very easy and my product was shipped out on the same day. I received it by UPS 3 day just as advertised on their website with free shipping. I even e-mailed customer support on a question that I had about the Austin Air and received a reply later that day. I also like the fact that if I had to return something that I will not be charged re-stocking fees like some other on-line retailers do. They are great to do business with and I will look forward to using them in the future.

      (3 of 3 customers found this review helpful)


      Very Happy

      By Brian Kang

      from USA

      Comments about Austin Air Allergy Machine Air Purifier (HM405):

      We recently got a miniature schnauzer and at the beginning of the summer when the pollen levels were extremely high, our little puppy would bring in all sorts of allergens from outside. There were a few weeks there where I thought we would have to find another home for our dog.
      I looked for all sorts of different products to help control the allergens as well as the pet dander and some things I tried helped a little, but I still could not stop itching and sneezing. We tried allergy shampoos, dander reducing sprays, all types of allergy medicines, and keeping the puppy from playing in the yard. No matter what we tried, he would bring in enough allergens to drive me insane.

      After all of these attempts to alleviate the problem, I couldn’t take it any more and started looking for an air purifier that would help. I had been looking for an air purifier for a long time, but I never pulled the trigger on it. I guess this was my tipping point.

      I looked at many other air purifiers that had better features such as being quieter, having more settings, having an ionizer, sleeker design, and etc. but I ended up choosing the Austin Air due to a number of factors.
      First off, the reviews I read about this air purifier were extremely positive. Also, the energy usage of this air purifier was pretty good for the amount of air it cleans per hour. It’s amazing how many times it cycles clean air into our living room.
      My friend who is a naturopath also has the Austin Air purifier at home, so that weighed into my decision as well. Finally, it came down to maintenance. Having to replace a pre-filter every 3 months along with replacing the HEPA every year would have been a pain as well as an extremely pricey option. The fact that all I have to do go over the outside of the unit with a vacuum every month and replace the HEPA filter every 5 years is fantastic.

      I have noticed a huge difference in the quality of air in our home. In fact I noticed the change right after I got the unit, as I was working from home that day. The amount of dust and dander in the house has also been significantly reduced, and we’re very pleased with the unit. My allergies are completely under control now. I’ll have to wait until the beginning of next summer to really put it to the test. It is a little noisier than other units that boast quieter systems, but it’s a dull noise that I can sleep to. I’m the type that can’t fall asleep with noises in the bedroom, so it’s great that it’s dull enough that I don’t notice it.

      Displaying reviews 1-8

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