Airpura T400 DLX Air Purifier
Black / No Filter Bundle
$709.98
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Airpura T400 DLX Air Purifier
Tobacco & heavy smoke · rated for 1,000 sq ft What the letters mean
Built forSmoke & Wildfire
CompareHEPA vs HepaBarrier
$709.98
Free shipping on every order.
30-day home trial. If it is not right, we pay the return shipping and refund you in full.
The manufacturer's own price. You pay what Airpura charges direct, and shipping is free.
Free shipping · estimated arrival Nov 10–Nov 17
4–9 business days, including processing. Ships from the manufacturer.
Built by Airpura in Montreal, Quebec, in sealed all-metal housings chosen specifically so the machine itself does not off-gas into the air it is cleaning.
What this actually costs to own
Machine, filter included
$709.98
Carbon filter
about 2 years
HEPA Barrier and prefilter
replaced yearly
Replacement filters are sold singly on our filters page. No subscription, no auto-ship, nothing to cancel.
Pay over timeSplit your purchase into payments with Shop Pay at checkout
30-day home trial
Run it in your home for 30 days. If it is not right, we pay the return shipping and refund you in full.
See details
Authorized dealer, full manufacturer warranty
Genuine products, never grey market
Questions before you buy? Nolan, the owner, answers support@freshhomeair.com, usually within a few hours.
Free shipping, factory-direct from the manufacturer
What It's Designed For
The T400 DLX is the heavy-load configuration of the T400 — same compact platform with the carbon stage upgraded to enhanced impregnated activated carbon. This treatment extends effective adsorption to chemical compounds in tobacco smoke that standard carbon cannot address efficiently, including ammonia, hydrogen cyanide, and reactive smoke compounds that accumulate in environments with heavy or long-term tobacco exposure. The TarBarrier pre-filter remains in the system to protect carbon service life.
Full specifications filtration stages, filter life, construction, coverage
Key Specifications
| Spec | Detail |
|---|---|
| MSRP | $709.98 |
| Series | 400 |
| Designed For | Heavy tobacco smoke — enhanced impregnated carbon |
| Carbon | Enhanced impregnated activated carbon |
| Tar Capture | TarBarrier pre-filter included |
| HEPA | HEPA Barrier, 95% @ 1 micron |
| UV-C | No |
| Airflow | 353 CFM |
| Fan Speeds | 3 |
| Coverage | ~1,000 sq ft |
| Housing | All-metal, pressure-sealed |
| Ozone | None |
| Ionizer | None |
| Warranty | 5 yr parts / 10 yr labor |
| Dimensions | 15.5" high, 12" wide |
Filtration System
TarBarrier Pre-Filter — Removes tar compounds before they reach the carbon bed. Critical for service life in heavy tobacco environments where tar accumulation rapidly fouls unprotected carbon.
Carbon Bed — Enhanced Impregnated Activated Carbon — Chemically treated impregnated carbon that extends adsorption to compounds requiring chemical reaction for effective capture: ammonia, hydrogen cyanide, hydrogen sulfide, chlorine compounds, certain acids. Combined with the standard adsorption range for tobacco smoke VOCs — benzene, toluene, formaldehyde, and combustion byproducts.
HEPA Barrier — 95% @ 1 micron — Captures fine smoke particles, PM2.5, and biological particulate.
Replacement Filter Bundles
Replacement filters for the 400 series are on our replacement filters page.
| Filter | Suggested Interval |
|---|---|
| TarBarrier Pre-Filter | Replace per usage intensity |
| Carbon Filter | Every 2 years (may shorten in heavy smoke) |
| HEPA Barrier | Every 12 months |
Best For
- Heavy or continuous tobacco smoke environments in a single room where the T400's standard carbon is insufficient
- Rooms with accumulated tobacco contamination in building materials (persistent third-hand smoke off-gassing)
- Environments with elevated ammonia or HCN from tobacco combustion requiring impregnated carbon for effective capture
T400 DLX vs. T400: The T400 uses standard activated carbon. The T400 DLX upgrades to enhanced impregnated carbon — the correct choice for heavy tobacco load or when ammonia and reactive smoke compounds are the primary concern. T400 DLX vs. T600 DLX: The T600 DLX carries 26 lbs of impregnated carbon at 560 CFM for 2,000 sq ft of heavy tobacco coverage. The T400 DLX is correctly sized for single rooms.
*Manufactured in Montreal, Canada.*
If it is the wrong machine
Run it for 30 days. If it is not right, it costs you nothing.
A purifier is a considered purchase, and you cannot really know until it has been in the room a while. So we made being wrong free. Not a restocking fee, not a return label you pay for — nothing.
What we do
- ✓ No restocking fee
- ✓ We send a prepaid, insured return label
- ✓ Your original shipping refunded too
- ✓ Use it properly first — “normal use is expected and completely fine”
Cost to change your mind: $0.00
What is common in this category
- × Restocking fees, often 15–25% of the purchase
- × Return freight paid by you on a unit this size
- × Original shipping treated as non-refundable
- × Returns refused once the unit has actually been used
Which is the opposite of a trial
Our terms in full: 30-day return policy. Restocking fees are common across the category; we do not charge one.
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How We Compare
Why these cost more
What a typical purifier leaves out. Every row is checkable on the manufacturer's own spec sheet.
Feature
Fresh Home Air
Typical Purifiers
Activated Carbon for Gases & VOCs
Zero Ionizers or Ozone Emissions
Varies
Manufactured in USA or Canada
Filter Life of a Year or More
Full Manufacturer Warranty (Authorized Dealer)
Varies
Free Shipping on Every Order
Varies
Comparison reflects Austin Air and Airpura products sold on freshhomeair.com vs. common consumer-grade air purifiers.
Still comparing?
Short, honest guides built on the makers' specs and EPA guidance. No affiliate links.
- Airpura 400 vs. 600 vs. 700what every letter and number means.
- Austin Air vs. Airpurahow the two brands we carry actually differ.
- How coverage claims workwhy a 2,000 sq ft rating is really 1,000.
- What it costs over five yearsmachine plus filters, for eight popular models.
Frequently asked questions
Everything you need to know before you buy.
Airpura rates this machine for up to 1,000 sq ft at two air changes an hour, with 8-foot ceilings. For four air changes, which is what we suggest for smoke, asthma or chemical sensitivity, plan on about 500 sq ft.
Airpura filter life varies by model and usage. Airpura rates the carbon filter at about two years of continuous use in a typical home. HEPA and pre-filters have their own replacement schedules. Replacement filters are available on our filters page. Running the unit below its rated capacity meaningfully extends filter life.
The 400 series has a three-speed fan. The lowest setting is the quietest and suits overnight use; the highest is meant for clearing a room quickly. See our quiet bedroom guide for Airpura's published decibel figures.
No. This unit uses only mechanical filtration — no ionizer, no UV, no ozone generator. That matters for people with asthma or chemical sensitivity, because ozone is a known airway irritant. Airpura does build UV-equipped machines, and they are gathered in the UV air purifiers collection — this is not one of them.
Yes. Austin Air and Airpura units are used by patients with asthma, allergies, and chemical sensitivity. The True HEPA captures particle-class triggers and the activated carbon addresses VOCs, odors, and chemical compounds. No ionizer, no ozone — safe for respiratory conditions. For MCS specifically, the HealthMate Plus or Airpura C600 have the most relevant specifications.
Yes. Airpura units are designed for continuous residential operation. The steel-body construction and quality motor components are built for this use case. The 400 series has three fan speeds, and a low to medium setting suits continuous use. Continuous operation at a moderate speed outperforms intermittent high-speed runs for maintaining consistent indoor air quality.
Airpura units ship free directly from their facility in Montreal, Canada. Most orders arrive in 4 to 9 business days, including 1 to 3 business days to process. You will receive a tracking number once your order ships. Import duties and customs fees are included in the product price — no surprise charges at delivery.
Airpura units carry a 5-year warranty on parts and labor, plus labor-only coverage to 10 years. As an authorized Airpura dealer, Fresh Home Air supports the full manufacturer warranty. Contact us at support@freshhomeair.com for warranty service.
Run it in your home for 30 days. If it is not right, email support@freshhomeair.com and we will send you a prepaid, insured return label. We pay the return shipping, there is no restocking fee, and you get a full refund once the unit is back with us. If it arrives damaged or faulty, email us within 7 days with photos of the item and the packaging. We will send a replacement and collect the original, and you pay nothing.
Yes. No ionizer, no ozone, no UV. Mechanical HEPA and activated carbon only, safe for continuous use in rooms with children and pets.
Authorized Airpura & Austin Air Dealer · Mechanical HEPA + Activated Carbon · No Ionizers · No Ozone · Free Shipping on All Orders · 30-Day Home Trial · Trusted by MCS Patients · Every Air Purifier, Shipped Factory-Direct
