Airpura R400 The Everyday Air Purifier
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Airpura R400 Air Purifier (The Everyday Air Purifier)
on high
carbon bed
@ 0.3 microns
The Airpura R400 Air Purifier (The Everyday Air Purifier) is the entry point to Airpura's everyday R-series — serious filtration sized for the single room you want to protect most.
Unlike particle-only purifiers, it pairs True HEPA filtration with a real activated carbon bed, so it handles both the allergens you can see settling on surfaces and the odors and airborne chemicals you can only smell.
It's built for bedrooms, nurseries, home offices, and contained living spaces where you want focused, reliable air cleaning rather than an oversized whole-home system.
Same all-metal Airpura build and sealed filtration as the larger R-series models — scaled to the rooms that matter most.
How the R400 Compares: R400 vs R600 vs R700
All three share Airpura's all-metal build, True HEPA filtration, and no-ozone design. The difference is airflow and carbon capacity — how large a space they cover and how much odor and chemical load they handle. The R400 is the right-sized entry point.
| Airpura R400 THIS MODEL |
Airpura R600 | Airpura R700 | |
|---|---|---|---|
| Best for | Single rooms & offices | Large living spaces | Open-plan & heavy loads |
| Coverage | Up to 1,000 sq ft | Up to 2,000 sq ft | Up to 2,500 sq ft |
| Airflow | 360 CFM | 560 CFM | 635 CFM |
| Activated carbon | 8 lb | 18 lb | 18 lb |
| True HEPA | 99.97% @ 0.3µm | 99.97% @ 0.3µm | 99.97% @ 0.3µm |
| Price | $569.98 | $849.98 | $999.98 |
The R400 is the right choice for one room done well — a bedroom, nursery, or office up to ~1,000 sq ft.
Step up to the R600 for larger living areas up to ~2,000 sq ft and more than double the carbon, or the R700 for open floor plans up to ~2,500 sq ft with the most airflow in the series.
Coverage based on 8-ft ceilings.
Is the Airpura R400 Air Purifier Right for You?
The Airpura R400 is designed for people who want meaningful particle and chemical filtration in one contained space up to approximately 1,000 sq ft.
It works especially well in:
✔ Bedrooms – Cleaner air while you sleep, particularly for allergies or pet dander.
✔ Nurseries & Children's Rooms – Added protection from VOCs and cleaning fumes.
✔ Home Offices – Consistent filtration in the room where you spend most of your day.
✔ Apartments & Condos – Strong standalone purification without central HVAC filtration.
✔ Smaller Living Areas – Dens, studios, and other contained spaces.
What the Airpura R400 Air Purifier Removes
True HEPA Particle Filtration (99.97% @ 0.3 Microns)
- Dust
- Pollen
- Mold spores
- Pet dander
- Tobacco smoke particles
- Droplets
With over 40 sq ft of HEPA media, warm-rolled with separators and sealed with close-ended metal caps, the R400 is engineered to prevent air bypass and maintain filtration integrity.
Activated Carbon for Airborne Chemicals & Odors
- Ammonia
- Benzene
- Household solvents
- Glues
- Pesticides
- Methylene chloride
- Perchloroethylene
- Mold mycotoxins
The 8-lb, 1-inch coconut shell carbon bed is built for everyday chemical and odor control — especially helpful if you're sensitive to cleaning products, new furnishings, renovation off-gassing, or urban pollution.
Key Design Features
Pressure-Sealed Filter Chamber
Ensures incoming air passes fully through the filters instead of leaking around them.
360° Air Intake
The perforated steel housing allows air to enter from all sides for balanced room circulation.
Motor Positioned Outside the Airflow Path
Prevents clean air from passing over motor components before leaving the purifier.
Variable-Speed Motor
Adjust airflow from quiet background filtration up to maximum air cleaning when you need it.
All-Metal Housing
Prevents plastic off-gassing and increases long-term durability — especially important for chemically sensitive environments.
Individually Replaceable Filters
Prefilter, carbon, and HEPA filters change independently to reduce maintenance costs.
Two Carbon Filter Options Available
Standard R400 Configuration
- 8 lbs activated coconut shell carbon
- Designed for everyday household chemical and odor control
A balanced option for most homes dealing with light odors, cooking smells, and typical indoor chemical exposure.
Super Gas R400 Configuration
- Upgraded carbon blend with potassium iodide for enhanced VOC adsorption
- Designed for environments with higher levels of airborne chemicals and gases
A stronger option for homes dealing with persistent odors, renovation off-gassing, or heightened chemical sensitivity.
Maintenance & Filter Life
Airpura designs its filtration systems for long operating cycles with straightforward maintenance.
Typical replacement schedule:
- Prefilter: vacuum monthly; replace approximately every 12 months
- Carbon filter: replace approximately every 2 years
- HEPA filter: replace approximately every 3 years
Because the filters change independently, you only replace what's actually due — helping reduce long-term costs.
Running the purifier continuously at a lower speed is typically the most efficient way to maintain indoor air quality.
Frequently Asked Questions
Should I get the R400 or the R600?
Choose the R400 for a single room up to ~1,000 sq ft — a bedroom, nursery, or office. Step up to the R600 if you're treating a larger living area up to ~2,000 sq ft: it moves more air (560 CFM vs 360) and carries more than double the carbon (18 lb vs 8 lb) for heavier odor and chemical loads.
Is it quiet enough for a bedroom or nursery?
Yes — the R400 is built for exactly these rooms and is designed to run continuously. For sleeping, run it on a lower speed for quiet, steady air turnover; the high 360 CFM setting moves the most air and is more audible.
Does the R400 arrive assembled?
Yes. The R400 ships as a single assembled unit — no tools or assembly required. Unpack it, plug it in, and choose your speed. See the User Manual for first-use setup.
How much are replacement filters, and where do I get them?
Genuine R400 replacement filters are available right here at Pure Indoor Living, starting at $39.98. Because the prefilter, carbon, and HEPA replace independently, you only buy the filter that's due — or grab the complete set when it's time.
What's the difference between Regular and Super Gas carbon?
The Regular R400 uses 8 lbs of activated coconut-shell carbon for everyday particles and household odors. The Super Gas 400 adds a potassium-iodide-treated carbon blend for stronger adsorption of airborne chemicals and VOCs — choose it if you're dealing with persistent odors, renovation off-gassing, or heightened chemical sensitivity.
What does the warranty cover?
The R400 is backed by a 5-year parts and 10-year labor warranty, so the core of the unit is covered well beyond the life of the first set of filters.
Does the R400 produce ozone?
No. The R400 cleans air through mechanical True HEPA and activated-carbon filtration only. It uses no ozone, no ionization, and no ionizer — nothing that generates ozone as a byproduct.
Is this a medical device?
No. The Airpura R400 is a residential/commercial air purifier for general indoor air quality. It is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease or health condition.
Documentation
Let Us Help You Find Your Perfect Airpura Air Purifier
Choosing the right air purifier often comes down to understanding airflow, carbon weight, and room size.
If you're comparing the Airpura R400 against larger models like the R600 or R700, we're happy to help you determine the best fit for your space.
Questions about room sizing, filter replacements, or long-term maintenance?
We'll help you choose with clarity and confidence.