Airpura R400 All Purpose Air Purifier
Best all-purpose purifier for allergy sufferers seeking chemical-free indoor air.
The Airpura R400 is a versatile, portable air purifier designed for everyday use in homes, apartments, and offices. It effectively tackles common airborne pollutants like chemicals, odors, pollen, mold spores, dust, and pet dander. Featuring a robust 3-stage filtration system, it includes a cleanable pre-filter, a substantial activated carbon filter for VOCs, and a True HEPA filter capturing 99.97% of particles. Its compact, all-metal housing ensures quiet, efficient operation without plastic off-gassing, making it ideal for allergy and asthma sufferers seeking cleaner indoor air.
$189.98
Owner Satisfaction
4.6
/ 5
Category Rank
38
/ 717
#38 in Air Purifiers
Price vs Category Average
-32%
Below average
Coverage Area
1481..2
/ , sq ft ( Air Changes Per Hour)
Who it's for
- Homeowners dealing with heavy chemical sensitivities or persistent household odors
- Allergy sufferers needing medical-grade filtration for dust and pet dander
- Health-conscious individuals prioritizing non-toxic, durable, and plastic-free air purification
Who should skip it
- Apartment dwellers with limited floor space or minimal storage capacity
- Light sleepers requiring silent operation during high-intensity air cleaning cycles
- Budget-conscious shoppers seeking low-cost maintenance and affordable initial pricing
Performance breakdown
Filtration Depth
Heavy-duty carbon and True HEPA layers handle complex chemical and particulate loads.
Build Integrity
All-metal construction eliminates plastic off-gassing for a truly clean air experience.
Coverage Efficiency
Impressive 395 CFM airflow effectively scrubs large rooms with ease.
Acoustic Profile
Quiet operation at low speeds makes it ideal for bedroom use.
Maintenance Simplicity
Cleanable pre-filter extends main filter life but requires manual upkeep.
Longevity Assurance
Ten-year warranty reflects exceptional manufacturing standards and long-term reliability.
Key Specs
Coverage Area
1,481 sq. ft. (2 Air Changes Per Hour)
HEPA Filter
True HEPA, 99.97% @ 0.3 micron
Carbon Filter
8 lbs Activated Carbon
Airflow
395 CFM
Noise Level
28.1 to 62.3 dBA
Weight
23 lbs
Filter Type
HEPA, Activated Carbon, Pre-Filter
Certifications
CARB Certified, ETL, UL 507, CSA C22.2 #113
Features
- 360-degree air intake for comprehensive pollutant capture
- Sealed filter chambers prevent off-gassing for sensitive individuals
- Cleanable pre-filter extends the life of main filters
- Durable, all-metal housing emits no plastic vapors
- Quiet operation suitable for bedrooms and offices
- Effective against allergens, chemicals, odors, and particles
- Compact and lightweight for easy placement
- Provides relief for allergy and asthma sufferers
What customers say
Customers regard the Airpura R400 as a significant investment in superior air quality. The consistent praise centers on its robust build and dependable performance, highlighting exceptional quality. Users express confidence in the unit's powerful filtration capabilities, noting its effectiveness against tough challenges like odors and chemical vapors. This reliable, long term solution often outweighs initial cost considerations, establishing the R400 as a trustworthy choice for achieving cleaner indoor air.
Know before you buy
No. The unit features an all-metal housing and sealed filter chambers specifically designed to prevent plastic off-gassing, making it a safe choice for individuals with chemical sensitivities.
Under normal residential use, the filters should be replaced every 12 months. The cleanable pre-filter helps extend the life of the main HEPA and carbon filters by capturing larger debris before it reaches them.
Yes. At its lowest fan speed, the unit operates at 28.1 dBA, which is whisper-quiet and suitable for bedroom use. The noise level only increases to 62.3 dBA when set to the highest speed for maximum air cleaning.
The R400 is designed to handle a broad spectrum of indoor pollutants. Its 3-stage system captures common allergens like dust, pollen, and pet dander, while the 8-pound activated carbon filter effectively neutralizes household odors and chemical vapors.
The unit is rated to cover up to 1,481 square feet, providing two full air changes per hour in a room of that size. It is highly effective for large living areas, open-concept apartments, or office spaces.
Maintenance is minimal. You should periodically vacuum or wash the cleanable pre-filter to ensure optimal airflow and to protect the longevity of the internal HEPA and carbon filters.
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