Airpura T400 Air Purifier: Tobacco Smoke, Tar & Odors
Model: T400
SKU: arp-ap-us1709
CARB Certified: Approved for sale to California
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The Airpura T400 air purifier covers up to 1,000 sq. ft. (depending on model and speed) and is specifically designed to reduce 4,000 chemicals, tars, and gases found in tobacco smoke. The deep carbon bed adsorbs over 4,000 harmful chemicals, gases, and at least 60 carcinogens.
Featuring 12 lbs of activated carbon plus a HEPA-Barrier (not a medical-grade HEPA).
If you loved the larger T700, then you will love the newer T400, designed for smaller spaces.
The Airpura T400 is a compact air purifier designed specifically for tobacco smoke. Its deep bed of 12 lbs of activated carbon adsorbs over 4,000 harmful chemicals and gases found in tobacco smoke, including at least 60 carcinogens, to reduce smoke and lingering odors. A Tar-Barrier pre-filter traps sticky tobacco tars before they reach the carbon. The T400 covers up to 1,000 sq. ft. at 2 air changes per hour (ACH), depending on fan speed, and runs as quiet as 32 dB on low.
Three Stages of Smoke Filtration
Tar-Barrier pre-filter – Traps tobacco tars before they reach the carbon bed.
12 lbs activated carbon bed – Adsorbs the chemicals, gases, and odors in tobacco smoke.
HEPA-Barrier post-filter – Traps carbon dust and particles, capturing 95% of particles at 1 micron.
HEPA-Barrier vs. True HEPA
The T400 uses a HEPA-Barrier, not a medical-grade True HEPA filter. Like Airpura's C-series and DLX models, it gives most of its filter space to carbon, because carbon is what reduces the gases, chemicals, and odors in smoke. The HEPA-Barrier captures 95% of particles at 1 micron. A True HEPA filter captures 99.97% of particles as small as 0.3 microns. If ultrafine particles concern you as much as smoke odor, contact us and we'll help you compare options.
Sizing Your T400
At high speed, the T400 delivers about 2 air changes per hour in 1,000 sq. ft. with 8-foot ceilings. How many air changes you need depends on your space and how quickly smoke enters it, because the unit needs to clean the air faster than new smoke comes in. Every person and situation is different, but heavy smoke areas like bars, restaurants, and other public smoking areas may even call for 10–12 ACH. That can mean more than one unit.
When smoke odors and gases are the main concern, we suggest sizing on medium speed. The T400 has a 3-speed fan. On medium, it runs quieter than on high, and air moves through the carbon bed more slowly, giving the carbon more time to adsorb smoke chemicals. You can check your own room with our Air Changes per Hour Calculator.
For larger spaces, the Airpura T700 is the bigger tobacco smoke model. In a small room that needs a high air change rate, though, a 700-series unit can draw its own clean air back in, so two or more T400s are often a better fit. If you'd like premium carbon impregnated with potassium iodide, see the Airpura T400DLX.
At a Glance
Coverage: Up to 1,000 sq. ft. at 2 ACH, depending on speed
Designed for: Tobacco smoke, tars, gases, and odors
Pre-filter: Tar-Barrier, 361 sq. in. x 1" deep
Carbon: 12 lbs activated carbon
Post-filter: HEPA-Barrier, 95% at 1 micron (not a True HEPA)
Delivered CFM (post-filters): 40 low / 200 medium / 260 high
Warranty (residential): 5 years parts, 10 years labor
Warranty (industrial/commercial): 2 years parts, 5 years labor
Made in: Canada
Estimated Maintenance
Filter
Service Interval
Tar-Barrier pre-filter
About monthly in public places; less often in homes, depending on usage
Carbon filter
Up to 2 years, depending on usage and contaminants
HEPA-Barrier
Each time the Tar-Barrier is changed in public places; typically yearly in homes
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 T400 is a compact, all-metal air purifier built for tobacco smoke. It combines a Tar-Barrier pre-filter, 12 lbs of activated carbon, and a HEPA-Barrier post-filter to reduce smoke, tars, gases, and odors in smaller spaces.
T400 Specifications
Coverage: Up to 1,000 sq. ft. at 2 air changes per hour (ACH), 8-ft ceilings, on high
Usage: Tobacco smoke, tars, VOCs, gases, odors, and particles
Dimensions: 15.5" H x 12" W
Weight: 32 lbs
Tar-Barrier Pre-Filter: 361 sq. in. x 1" deep
Carbon Bed: 12 lbs activated carbon
HEPA-Barrier Post-Filter: 95% effective at 1 micron (not a True HEPA)
Gaskets: Neoprene (since 2021)
Fan/Motor CFM (Pre-Filters): 395 CFM
Delivered CFM (Post-Filters): 40 CFM low, 200 CFM medium, 260 CFM high (varies with configuration)
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
Housing: All-metal; available in white or black
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
Not sure how many air changes your space needs? It depends on your space and how quickly smoke enters it. Heavy smoke areas, like bars and public smoking areas, may even call for 10–12 ACH. Try our Air Changes per Hour Calculator or give us a call at (888) 231-1463.
If the T700 is too large for your space, the T400 is an excellent option.
Ideal for smaller spaces, including:
Homes with smokers
Restaurants and bars
Hotels and other hospitality settings
Institutions with smoking areas
Waiting rooms
Homes affected by forest fire smoke
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 from Many Air Purifier Companies
Airpura air purifiers are built differently from many units on the market, with a focus on clean construction, deep filtration you can customize, and long-term durability.
Clean Construction
All-metal housing: Powder-coated steel instead of plastic, so no plastic vapors are emitted.
Motor out of the airflow: Many air purifiers blow the clean air over the motor, where it can pick up impurities. Airpura keeps the motor out of the airflow.
Electrical parts in a sealed chamber: Kept away from the airflow, which increases safety and prevents off-gassing.
Pressure-sealed filter chamber: Airpura’s unique pressure seal keeps air from slipping around the filters, so it passes through them.
Neoprene gaskets: Seal the filter chamber, with felt available on request (custom made for the unit, so it may lengthen ship time).
Deep, Customizable Filtration
Deep activated carbon beds: Up to 26 lbs of activated carbon, depending on model, with airflow and bed depth calibrated for proper contact time.
Carbon options: On carbon models, the standard carbon can be swapped for V, F, S or anthracite carbon for an additional charge, to target specific chemicals.
HEPA options: True HEPA or HEPA Barrier, depending on the model; H14 SuperHEPA on the 414, 614 and 714 models; and a 100 sq. ft. True HEPA on the I series, the largest HEPA in the Airpura line.
UV and PCO options: UV germicidal lamps on the UV series, TitanClean photocatalytic oxidation with UV on the P series, and a UV upgrade on the I series.
Power and Control
Delivered airflow (after the filters): Estimated from low to high. Delivered airflow varies with each filter configuration.
400 series: 40–260 CFM
600 series: 100–412 CFM (366–412 CFM on high, depending on model)
700 series: 88–450 CFM
Speed control: Three speeds on the 400 series and variable speed on the 600 and 700 series.
Superior dwell time: The integrated impeller/motor, speed control and unimpeded airflow let you set the airflow precisely, so the air gets the time it needs with the filters.
Built to Last
Warranty on residential units: 5 years parts and 10 years labor.
Warranty on industrial/commercial units: 2 years parts and 5 years labor.
Made in: Canada.
Whole home options: R, V, UV, P, C and I models are also available as whole home units, installed by your local HVAC specialist.
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. Units with impregnated carbon, such as the T400DLX, C400DLX, V400, F400, and F400DLX, have higher adsorption ratings.
Download the Airpura KCL Test Report (PDF) – Testing was performed on the Airpura 600 series with standard activated carbon. Units with impregnated carbon, such as the T400DLX, perform even better.
Estimated Maintenance
Filter
Service Interval
Pre-filter
Varies by use; typically changed every 6–12 months
Tar-Barrier
Varies by use; about monthly in public places and less often in homes
Activated carbon
Up to 2 years, depending on usage and contaminants
HEPA-Barrier
Each time the Tar-Barrier is changed in public places; typically yearly in homes
HEPA or Super HEPA
2–5 years max, 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.
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