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Airpura S400 & S414 SuperGas Air Purifier: Formaldehyde, VOCs & Particulates

Model: S400 / S414

SKU: arp-ap-us1738

CARB Certified: Approved for sale to California

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Airpura S400 and S414 air purifiers cover up to 1,000 sq. ft. (depending on model and speed) and trap formaldehyde, airborne chemicals, and VOCs with 8 lbs of SuperGas enhanced, impregnated activated carbon, plus particles with a metal-capped True HEPA (S400) or H14 Super HEPA (S414) filter. Some of the prime chemicals filtered, which can cause moderate to severe health issues like headaches, drowsiness, and rhinitis, are formaldehyde, ammonia, pesticides, benzene, and toluene.

SuperGas is a proprietary hybrid carbon blend that captures formaldehyde like the Airpura F-series and a wide range of other VOCs and chemicals like the V-series. Each unit has a 3-speed fan (low, medium, and high) and neoprene gaskets, with custom felt gaskets available on request.

$669.98 to $709.98

Product Description

The Airpura S400 and S414 are compact, high-powered air purifiers built to reduce formaldehyde, airborne chemicals, VOCs, and odors along with fine particles. Each unit holds 8 lbs of Airpura's SuperGas carbon, a proprietary hybrid blend that combines the strengths of two Airpura carbons: it targets formaldehyde like the F-series and adsorbs a wide range of other VOCs and chemicals like the V-series. Formaldehyde, ammonia, pesticides, benzene, and toluene are some of the most common indoor chemicals linked to headaches, drowsiness, and rhinitis, and they're often released by new furniture, pressed wood, flooring, and other modern building materials. Both models cover up to 1,000 sq. ft. at 2 air changes per hour (ACH), depending on fan speed, and run as quiet as 32 dB on low.

Airpura S400: SuperGas Carbon with True HEPA

The S400 pairs 8 lbs of SuperGas carbon with a 40 sq. ft. medical-grade True HEPA filter that captures 99.97% of particles as small as 0.3 microns. It's a balanced choice for households that want strong formaldehyde and VOC reduction plus dependable protection from dust, pollen, pet dander, and mold spores.

Airpura S414: SuperGas Carbon with H14 Super HEPA

The S414 uses the same SuperGas carbon bed as the S400, but upgrades the particle filter to a 40 sq. ft. H14 Super HEPA that captures 99.99% of particles as small as 0.1 microns. We recommend the S414 for allergy and asthma sufferers, mold concerns, fine smoke particles such as wildfire smoke, and anyone with Multiple Chemical Sensitivities (MCS) who wants the highest level of particle capture alongside chemical reduction.

S400 vs. S414: What's the Difference?

The only difference between the two units is the particle filter. Everything else, including the all-metal housing, motor, pre-filter, and 8 lbs of SuperGas carbon, is the same.

S400 – Medical-grade True HEPA (99.97% at 0.3 microns). A great fit for formaldehyde and VOC concerns with typical household particles.
S414 – H14 Super HEPA (99.99% at 0.1 microns) for a higher level of particle capture. Best when fine particles matter as much as chemicals.

Both models use the same pre-filter and SuperGas carbon filter.

SuperGas Carbon: The Best of the V and F Series

Most carbon blends are built for one job. Airpura's F-series carbon is designed to target formaldehyde, while the enhanced carbon in the V400 & V414 covers a wide range of VOCs and specific chemicals. SuperGas is a hybrid of the two. It reduces formaldehyde like the F-series and also adsorbs the broader range of chemicals the V-series handles, making the S400 and S414 a strong all-around choice when you're dealing with formaldehyde plus other chemicals from new furniture, flooring, renovations, or nearby industry.

What's in SuperGas Carbon?

SuperGas is Airpura's proprietary carbon blend, so we can't share the exact ingredients or amounts. For our MCS clients, we can tell you that it contains potassium permanganate (a smaller percentage than the F400DLX), zeolite, and potassium iodide. If you're sensitive to any of these, please contact us before ordering so we can help you choose the right unit.

Balanced Protection Against Chemicals and Particles

Carbon and HEPA do different jobs. The carbon bed adsorbs formaldehyde, VOCs, gases, and odors, while the HEPA filter captures particles like mold spores, pollen, and pet dander. The S400 and S414 give you both in one compact unit. The 3-speed fan (low, medium, and high) lets you slow the airflow for longer dwell time in the carbon bed, which improves VOC adsorption.

Sizing Your S400 / S414

At high speed, the S400 / S414 delivers about 2 air changes per hour in 1,000 sq. ft. with 8-foot ceilings. The number of air changes you need varies widely, and there are many rules of thumb. For example, clients with allergies or asthma often aim for 3–7 ACH, while areas with heavy VOCs or smoke may even call for 10–12 ACH. The right number for you depends on what the contaminant is, how heavy it is, how quickly it's coming in, how much filtration you want, and your own sensitivities.

When formaldehyde and other VOCs are your main concern, size the unit on medium speed so air passes through the carbon more slowly, and make sure it can clean the air faster than the source adds to it. You can check your own room with our Air Changes per Hour Calculator, or contact us, and we'll help you find the right fit. If your main concern is general particles and household odors rather than formaldehyde and specific chemicals, the Airpura R400 & R414 uses standard activated carbon at a lower price.

If you're aiming for more air changes in a small space, it may be tempting to choose a 700-series unit. In very small areas, though, a 700 can sometimes create a vortex effect. That means the unit can draw its own clean air back in instead of moving air through the whole room. To reduce that risk, we recommend more than one S400 / S414 or a 600-series model instead.

At a Glance

Coverage: Up to 1,000 sq. ft. at 2 ACH, depending on speed
S400 filtration: Medical-grade True HEPA, 99.97% at 0.3 microns
S414 filtration: H14 Super HEPA, 99.99% at 0.1 microns
HEPA surface: 40 sq. ft. (measured one side), 10 pleats per inch, closed-end metal caps (both models)
Carbon: 8 lbs SuperGas enhanced impregnated carbon blend
Carbon bed: 9.5" H x 8.5" OD x 6" ID, 3/4" deep
Pre-filter: 361 sq. in. x 1" deep
Gaskets: Neoprene; felt available on request
Fan/motor CFM (pre-filters): 395 CFM
Delivered CFM (post-filters): 40 low / 200 medium / 260 high
Noise: 32 dB low / 52 dB high (room level 30 dB)
Size: 15.5" high x 12" wide
Weight: 24 lbs
Power: Max 69 watts, 0.6 A, standard 110V
Fan speed: 3-speed (low, medium, high)
Housing: All metal with an oven-baked powder coat, available in white or black
Casters: Not available
Certifications: ETL (CSA C22.2 No. 113, ANSI/UL 507); CARB certified
Warranty (residential): 5 years parts, 10 years labor
Warranty (industrial/commercial): 2 years parts, 5 years labor
Made in: Canada

Estimated Maintenance

Pre-filter	Clean every 3–6 months, change every 6–12 months
Carbon filter	Up to 2 years, depending on usage and contaminants
HEPA filter	Up to 5 years, depending on usage and contaminants

Note: Filter maintenance is based on standard usage and average contaminants. Depending on your situation, filters may need to be changed more or less often.

Specifications

The Airpura S400 and S414 are two separate units built on the same compact, all-metal platform. Both pair 8 lbs of Airpura's SuperGas carbon, a proprietary hybrid blend for formaldehyde, VOCs, specific chemicals, gases, and odors, with high-efficiency particle filtration. The difference is the particle filter: the S400 uses a True HEPA filter, and the S414 uses an upgraded H14 Super HEPA filter for a higher level of particle capture.

S400 vs. S414 at a Glance

Feature	Airpura S400	Airpura S414
Particle Filter	True HEPA, 99.97% at 0.3 microns	H14 Super HEPA, 99.99% at 0.1 microns
Best For	Formaldehyde, chemical, and VOC concerns with everyday dust, pollen, pet dander, and household particles	Formaldehyde, chemical, and VOC concerns plus allergies, asthma, mold, fine smoke particles, and Multiple Chemical Sensitivities (MCS)
Replacement Particle Filter	Airpura 400 HEPA Filter	Airpura 414 HEPA H14 Filter

Shared Specifications (S400 and S414)

Coverage	Up to 1,000 sq. ft. at 2 air changes per hour (ACH), 8-ft ceilings, on high
Usage	Formaldehyde, VOCs, specific chemicals, gases, odors, and particulate contaminants
Dimensions	15.5" H x 12" W
Weight	24 lbs
Housing	All metal, oven-baked powder coat; white or black
Pre-Filter	361 sq. in. x 1" deep
HEPA Construction	40 sq. ft. filtration surface (measured one side), closed-end metal caps, 10 pleats per inch
Carbon Bed	8 lbs SuperGas enhanced impregnated carbon blend; 9.5" H x 8.5" OD x 6" ID, 3/4" deep
Carbon Blend Contents	Proprietary; contains potassium permanganate (less than the F400DLX), zeolite, and potassium iodide
Replacement Carbon Filter	Airpura S400 / S414 SuperGas Carbon Filter
Gaskets	Neoprene; felt available on request (custom made, may add to ship time)
Fan/Motor CFM (Pre-Filters)	395 CFM
Delivered CFM (Post-Filters)	40 CFM low, 200 CFM medium, 260 CFM high
Fan Speed	3-speed (low, medium, high)
Sound Level	32 dB low, 52 dB high (typical room level is 30 dB)
Voltage	Standard 110V
Power	69 watts max, 0.6 A
Casters	Not available
Certifications	ETL certified (conforms to CSA C22.2 No. 113, ANSI/UL 507); CARB certified for sale in California
Warranty – Residential	5 years parts, 10 years labor
Warranty – Industrial/Commercial	2 years parts, 5 years labor
Made In	Canada

Not sure how many air changes your space needs? Every situation is different, and heavy VOC or smoke areas may even call for 10–12 ACH. Try our Air Changes per Hour Calculator or give us a call at (888) 231-1463.

Filters, Bulbs, Refills

Free Shipping Airpura S400 S414 Filter Bundle

Starting at $309.96
- Save Money
- Fits S400 & S414 Series
- SuperGas for Widest Realm VOCs
- Does NOT fit 6-Series or 7-Series
Free Shipping Airpura 400 Prefilter -2 pack: FITS 400 Series

Starting at $44.98
- Fits all 400 and 415 Series
- Does NOT fit 6-Series or 7-Series
- 2 Pack for Convenience
- Check or Change 6 months
Free Shipping Airpura Carbon Filter S400 S414 Super Gas Carbon Blend for Widest Realm of VOCs

$269.98
- Fits S400 / S414
- Replace every 18-24 months
- Does NOT fit 6-series or 7-series
- 8 lbs of Super Gas Carbon for Widest Realm of VOCs
Free Shipping Airpura 400 HEPA Filter Fits 400 Series

$154.98
- Fits R400 and V400
- Does NOT fit 6-series or 7-series
- Medical Grade HEPA
- Replace every 5 yrs or when needed
Free Shipping Airpura 414 HEPA H14 Filter Fits 4-Series

$194.98
- Fits R414 and V414
- Does NOT fit 6-series or 7-series
- Medical Grade SuperHEPA
- Replace every 5 yrs or when needed

Video

Airpura Featured by Barb Lulay at USAirPurifiers.com

Keep Your Family Healthy

Airpura Particle Test

Airpura Smoke Test

Tips for School

Airpura Filter Maintenance Focus (H-series H600, H614, H700, H714: Prefilter with Overcloth, HEPA, HiC Carbon)

Airpura Filter Maintenance Focus (I-series I-600 and I-700: Prefilter with Overcloth, I-HEPA)

Airpura Filter Maintenance Focus (R-series , V-series , F-series , G-series: Prefilter with Overcloth, HEPA, 18 lbs Carbon)

Airpura Filter Maintenance Focus (P-series: Prefilter with Overcloth, HEPA, 18 lbs Carbon, Reflector, UV Lamp)

Airpura Filter Maintenance Focus (UV-series: Prefilter with Overcloth, HEPA, 18 lbs Carbon, UV Lamp)

Airpura Filter Maintenance Focus (T-series, C-series, DLX Series: Prefilter with Overcloth, HEPA Barrier, 28 lbs Carbon)

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Ideal For

If the S700 or S714 is too large for your space, the S400 or S414 is an excellent option.

Ideal for smaller spaces with:

Formaldehyde
Pressed wood
New furniture
New polyurethane floors
Renovations or remodeling with new carpet
Acid gases
Ammonia
Benzene
Toluene
Pesticides
Chlorine
PVC VOCs
Air fresheners and perfumes
Pet odors
Forest fires
Lead abatement
Volcanic gases (VOG)
Workplaces and industries that release chemicals from manufacturing processes
Homes near manufacturers that release chemicals from manufacturing processes
Individuals with Multiple Chemical Sensitivities (MCS) who tolerate small amounts of potassium iodide and potassium permanganate
Families who want clean, healthy air at home
Areas with poor outdoor air quality
Locations near agricultural operations

These are just some of the uses for this unit. Many contaminants are a good fit for more than one unit, so if you\'d like help finding the best one for your needs, please contact us.

Many factors come into play when choosing an air purifier, including the contaminants, coverage (enough air changes for the level of off-gassing), how quickly things are off-gassing, particulate matter, and your own sensitivities. The uses above are suggestions. Air purification isn\'t a black-and-white science, and things outside our control, like humidity or where the unit is placed, affect results. We wish there were one unit for every need, but there are always trade-offs, like sound versus power and budget versus filtration.

Don\'t hesitate to ask, especially if your contaminant levels are high.

Airpura Difference

Unique Features that make Airpura Different than Many Air Purifying Companies

All Metal Housing - No plastic vapors are emitted

Motor out of the air flow - Many air purifiers blow the clean air over the motor and pick up impurities

Electrical parts in a sealed chamber away from the airflow - Increases safety and prevents off-gassing

Fan/Motor CFM (PreFilters): 395 CFM

Delivered CFM (PostFilters): 40 CFM on low, 200 CFM on medium, and on high 260 CFM. CFM will vary with different configurations.

Variable speed control - Offers you flexibility

Proper contact times for effective filtration - Correctly calibrated air flow / bed depth for efficient adsorption

Pressure sealed filter chamber - Unique pressure seal on the filter chamber ensures all contaminants are filtered and cannot escape

Warranty on Residential Units: 5 yrs parts and 10 years labor

Warranty on Industrial/Commercial Units: 2 yrs parts and 5 years labor

Made In: Canada

Neoprene gasket seal the filter chamber - Maximize filtration with no rubber off-gassing

Clean modern appearance - Fits in any decor

Low noise level - 32 db on low at 6 ft and 52.0 on high

Superior Dwell Time: The 395 CFM impeller/motor combined with the variable speed control and unimpeded airflow of the Airpura 400 series allows the airflow to be set precisely and achieve maximum results.

The 4-series allows our clients not only to enjoy the same high-quality filtration as the 7-series configurations but just in a smaller, compact unit.

More Info

Downloads & Documentation

Download the Airpura Filter Maintenance Guide (PDF)
Download the Airpura Activated Carbon Adsorption Ratings (PDF) – These ratings are for standard activated carbon against common chemicals and VOCs. Not every tested compound is listed, so if you have a specific concern, contact us, and we\'ll check with Airpura\'s chemist. The S400 / S414 uses Airpura\'s SuperGas enhanced, impregnated carbon blend, so its adsorption ratings are higher than those shown. Other impregnated-carbon units include the V400, C400DLX, F400, and F400DLX.
Download the Airpura KCL Test Report (PDF) – Testing was performed on the Airpura 600 series with standard activated carbon. Units with impregnated carbon, including the S400 / S414, perform even better.

Estimated Maintenance

Pre-filter	Clean every 3–6 months, change every 6–12 months
Carbon filter	Up to 2 years, depending on usage and contaminants
HEPA filter	Up to 5 years, depending on usage and contaminants
UV lamp	Not applicable

Note: Filter maintenance is based on standard usage and average contaminants. Depending on your situation, filters may need to be changed more or less often.

Airpura S400 & S414 SuperGas Air Purifier: Formaldehyde, VOCs & Particulates

Product Description

Airpura S400: SuperGas Carbon with True HEPA

Airpura S414: SuperGas Carbon with H14 Super HEPA

S400 vs. S414: What's the Difference?

SuperGas Carbon: The Best of the V and F Series

What's in SuperGas Carbon?

Balanced Protection Against Chemicals and Particles

Sizing Your S400 / S414

At a Glance

Estimated Maintenance

Specifications

S400 vs. S414 at a Glance

Shared Specifications (S400 and S414)

Filters, Bulbs, Refills

Video

Airpura Featured by Barb Lulay at USAirPurifiers.com

Keep Your Family Healthy

Airpura Particle Test

Airpura Smoke Test

Tips for School

Airpura Filter Maintenance Focus (H-series H600, H614, H700, H714: Prefilter with Overcloth, HEPA, HiC Carbon)

Airpura Filter Maintenance Focus (I-series I-600 and I-700: Prefilter with Overcloth, I-HEPA)

Airpura Filter Maintenance Focus (R-series , V-series , F-series , G-series: Prefilter with Overcloth, HEPA, 18 lbs Carbon)

Airpura Filter Maintenance Focus (P-series: Prefilter with Overcloth, HEPA, 18 lbs Carbon, Reflector, UV Lamp)

Airpura Filter Maintenance Focus (UV-series: Prefilter with Overcloth, HEPA, 18 lbs Carbon, UV Lamp)

Airpura Filter Maintenance Focus (T-series, C-series, DLX Series: Prefilter with Overcloth, HEPA Barrier, 28 lbs Carbon)

Related Products

Ideal For

Airpura Difference

More Info

Downloads & Documentation

Estimated Maintenance

Q&A