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B402 Bedroom Machine Air Purifier, High Efficiency Gas Absorption, Clean Air Pocket Vent, Easy Filter Changes, Independently Tested and Smooth Roll Casters in

Quick Specs: View More

  • Width: 14.5"
  • Height: 23"
  • Depth: 14.5"

The HM402 air purifier lets you breathe easy and sleep soundly. While you sleep, this air cleaner rids the air of common allergens and odors that trigger allergy and asthma symptoms and heighten multiple chemical sensitivities (MCS). Designed to clean the air in spaces up to 1,500 square feet, the Bedroom Machine captures nano-sized particles and absorbs harmful odors and chemicals, so you can rest easier. Available at AppliancesConnection


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

Independently Tested
Like all Austin Air Purifiers, the Austin Bedroom 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.

Easy to Use
No complicated control panels, the Bedroom Machine includes 1 manual knob control to adjust your fan speed and turn the unit on and off.

Long-Life Filter
The combination HEPA/carbon filter needs to be replaced only once every 5 years under typical use to help save you money on costly filter replacements.

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.

Carbon Blend Filter
Next, air moves through a 15-pound carbon and natural zeolite filter where odors, chemicals, gases, fumes, and VOCs are absorbed and locked away.

Medical-Grade HEPA Filter
Air then 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 Carbon Filter
Lastly, a HEGA (High Efficiency Gas Absorption) filter constructed of military-grade activated carbon cloth acts as double protection against odors, gases, chemicals, and VOCs. 


  • Sounder sleep
  • Reduced snoring
  • Stop sneezing
  • Reduce nighttime allergies & asthma attacks
  • Strengthen your immune system
  • Reduced coughing and wheezing
  • Eliminate dry mouth and runny nose


Room Coverage 1500 Sq. Ft.
Height 23"
Width 14.5"
Depth 14.5"
Pre-Filter Type Large Particle Pre-Filter
HEPA Filter Type 60 Sq. Ft. of True Medical-Grade HEPA
Amount of Carbon 15 lbs. Activated Carbon and Zeolite
Number of Filters to Change 1
Pre-Filter 5 Years
HEPA Filter 5 Years
Carbon Filter 5 Years
Number of Fan Speeds 3
Amount of Air Moved 250 CFM
Maximum Noise Level 67 dB
Controls Manual
Amperage 1.1 Amps
Maximum Wattage 135 W
Voltage 110-120 V


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  • Brand:Austin Air
  • SKU:B402
  • Stock Id:357250
  • Product Number:B402


  • Number of Speeds:3
  • CFM Room Circulation:250 CFM


  • Width:14.5"
  • Height:23"
  • Depth:14.5"


  • Programmable Timer:No
  • Remote Control:No

    Technical Details

  • Energy Star:No
  • Voltage:110-120V
  • Casters:Yes
  • Controls:Manual
  • Filter Change Indicator:No
  • Amperage:1.1 Amps
  • Maximum Wattage:135 W
  • Hepa Filter:Yes
  • Pre-Filter:5 Years
  • Room Coverage:1500 Sq. Ft.
  • Amount of Carbon:15 lbs. Activated Carbon and Zeolite
  • Carbon Filter:5 Years
  • Maximum Noise Level:67 dB
  • HEPA Filter Type:60 Sq. Ft. of True Medical-Grade HEPA
  • Pre-Filter Type:Large Particle Pre-Filter
  • Number of Filters to Change:1
  • Weight:50.00 lbs