Austin Air Purifiers

The Air Cleaner Store
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Austin Air Bedroom Machine® HM402

(3 customer reviews)


With 5 layers of protection, Bedroom Machine is our most comprehensive air cleaner. Designed to help remedy sleep problems, this ultra-advanced technology delivers the best air quality with whisper quiet efficiency.

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The Bedroom Machine HM402 - Designed to help people with sleep-related problems.


  • Two technically advanced carbon filters help remove over 3,000 household air pollutants, including nitrogen dioxide, that trigger night-time allergies, asthma and COPD.
  • The Bedroom Machine’s five-stage filter was designed with Johns Hopkins University and The National Sleep Foundation, to help you sleep.
  • Delivers Highest Professional Standard of Air Quality Management with True Medical Grade HEPA filtration.
  •  Helps manage airborne COVID-19.


Girl-With-DandelionThe Secret to Highest Air Quality Management

Bedroom Machine is equipped with an ultra-powerful 5 stage filter.  Delivers the most advanced filtration technology ever. Every component is uniquely designed to provide maximum performance and energy efficiency. This technology combines Medical Grade HEPA filtration and two activated carbon filters to capture and remove  99.7% of viruses, bacteria, mold, allergens, and odors.

Our Air Cleaners are built to last with a 5-year warranty!


Easy to maintain and use, all of our Austin Air units come with our expert support and guidance to make the most out of your filter. Replacement filters are only needed once every 3-5 years. We ship them to you automatically, and we cover the cost of the shipping. 


Austin Air Technical Specifications Bedroom Machine® HM402 Standard HEPA Air Cleaner
DIMENSIONS 14.5" W x 14.5" D x 23" H
WEIGHT 47 lbs.
CONSTRUCTION 23-gauge steel housing with 360° intake. Baked on powder coat finish. Available in Black and Sandstone. Easy roll casters included.
MOTOR Thermally protected Permanent, Split Capacitor (PSC) high efficiency motor, Max. HP: 1/11.5, with CSA C-US approval.
POWER CSA RATING 120 VAC 60 Hz, Max. Watt: 147, Max. Amp: 1.2
POWER SWITCH Three Speed Control High Medium Low
POWER RATING AT SPEED Watts power 137 Watts 82 Watts 56 Watts
Amps 1.2 Amps 0.71 Amps 0.51 Amps
FAN 3 speed centrifugal fan rated Cubic Feet per Minute (CFM) 400 CFM 200 CFM 75 CFM
CFM after the filter 250 CFM 125 CFM 47 CFM
Fan sound level in decibels (dB) 65 dB 55 dB > 40 dB
COMPARATIVE SOUND Normal Conversation
Normal Conversation
Stream, Refrigerator Humming
Austin Air Technical Specifications Bedroom Machine® Filter FR402
Dimensions: 13.5 in. diameter, 14.5 in. height
Perma Filter Pre-Filter®
15 lbs. (over 270 cubic inches) of Activated Carbon and Zeolite. Military Grade Carbon Cloth. HEGA (High Efficiency Gas Arrestance)
60 square feet True Medical HEPA grade filter medium.
Metal end caps with foam sealing gaskets top and bottom.
Filter total weight of 23 lbs.
STAGE 1 – Perma Filter Pre-Filter A Large Particle pre-filter.
STAGE 2 – Medium Particle Pre-filter. Removes small to medium size particles.
STAGE 3 – 15 lbs. (over 270 cubic inches) of Activated Carbon and Zeolite.
STAGE 4 – 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.
STAGE 5 –Military Grade Carbon Cloth HEGA (High Efficiency Gas Arrestance).
Austin Air Bedroom Machine ® Technical Specifications
HM402 Standard Size Air Cleaner
DIMENSIONS 14.5" W x 14.5" D x 23" H
WEIGHT 47 lbs.
CONSTRUCTION 23-gauge steel housing with 360° intake.
MOTOR Permanent Split Capacitor (PSC) high efficiency motor
POWER RATING Maximum Watt: 147, Amp: 1.2
FAN Three speed centrifugal fan
COMPARITIVE SOUND 40 to 65 dB (normal conversation to a stream)
Bedroom Machine® Filter Assembly - FR402
DIMENSIONS 13.5" D x 14.5" D
WEIGHT 23 lbs.
CONSTRUCTION Metal end caps with foam sealing gaskets
STAGE 1 Large Particle Pre-Filter
STAGE 2 Medium Particle Filter
STAGE 3 15lbs. Activated Carbon and Zeolite
STAGE 4 60 sq. ft. of True Medical Grade HEPA.
STAGE 5 Military Carbon Cloth (HEGA)


3 reviews for Austin Air Bedroom Machine® HM402

Based on 3 reviews
5 star
4 star
3 star
2 star
1 star
  1. Bob R.

    WOW! I have severe allergies and have tried everything. I plugged this in on high first thing in the morning and within 24 hours my house smelled cleaner. I got my first restful night sleep and was able to breath better then I ever have before. As an added benefit my cat has allergies and she has been better well. We shall see how long the filters actually last but for know it is well worth the money. It is loud but that should be expected since it moves so much air through the filter it is necessary. We turn it on low while sleeping and it just sounds like a box fan. It also has heavy duty casters and we roll it into different areas of the house. It doesn’t have many bells and whistles but I figure that is a good thing less moving parts to break. Thanks to Rebekah at The Air Cleaner Store,I am breathing and sleeping better..

  2. Akila M.

    Highly efficient and easy to use
    I’m so pleased with the Bedroom Machine! My wife was very grateful that after the first night of use my snoring was so much better. We both have both noticed less sinus congestion as well. This machine is also very quiet and we like the option of running it on any of the 3 speeds. We keep it running 24/7.

  3. Mary M, Sacramento CA

    My Bedroom Machine and Allergy Machine work great! I have asthma and I feel like I am at the ocean breathing fresh air with these filters!

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