Air Purifiers / Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) vs Blueair Blue Pure 211i Max (3613111100)
Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US)
$1014.99
VSBlueair Blue Pure 211i Max (3613111100)
$349.99
Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) vs Blueair Blue Pure 211i Max (3613111100)
Blueair Blue Pure 211i Max (3613111100)
The highest verified CADR here, from a charged-media system you cannot switch to mechanical-only.
Wins overall by 2.9 points
Quick Verdict
The Blueair Blue Pure 211i Max (3613111100) is the stronger all-round pick, ahead by 2.9 points. The highest verified CADR here, from a charged-media system you cannot switch to mechanical-only.
The Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) and Blueair Blue Pure 211i Max (3613111100) are both closely matched air Purifier models, and the Blueair Blue Pure 211i Max (3613111100) is $665 cheaper than the Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) ($349.99 vs $1,014.99). On Coverage-Claim Honesty, the Blueair Blue Pure 211i Max (3613111100) leads (8.0 vs 2.0/10) — the trap dimension for this category. Almost every brand derives its headline square footage from ONE air change per hour, which does close to nothing for smoke, pollen or wildfire particulate — the useful standard is 4.8 air changes an hour, and it is typically a fifth of the number on the box. A high score means the manufacturer publishes the 4.8-ACH figure prominently and it survives comparison with the AHAM Verifide room size; a low score means a big number with no stated air-change basis, or no CADR at all to derive one from.. On Verified Clean-Air Delivery, the Blueair Blue Pure 211i Max (3613111100) leads (9.5 vs 3.5/10) — how much air the unit actually cleans per minute, weighted heavily toward AHAM Verifide smoke CADR over manufacturer-published figures. Self-reported CADR scores below Verifide CADR, and 'no CADR published at all' scores below both. On Quietness, the Blueair Blue Pure 211i Max (3613111100) leads (8.0 vs 3.5/10) — measured decibels at the lowest setting you would run overnight AND at the top speed you need in a smoke event — a purifier is only useful at a speed you can tolerate. Not publishing a figure at either end costs points. Overall, the Blueair Blue Pure 211i Max (3613111100) scores 7.7/10 across our 8 scoring categories versus 4.8/10 for the Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US). Below, we break down the full spec sheet, category-by-category scores, and exactly who should buy which one.
Side-by-Side Comparison
| Spec | Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) | Blueair Blue Pure 211i Max (3613111100) |
|---|---|---|
| Price | $1014.99 | $349.99 |
| Release Year | 2024 | 2023 |
| AHAM Verifide CADR (Smoke / Dust / Pollen) (CFM) | Not published, and not AHAM Verifide. Molekule does not appear in the AHAM Verifide directory in August 2026 and publishes no CADR for smoke, dust or pollen anywhere on the Air Pro page. For a $1,015 machine this is the single largest information gap in the file. | AHAM Verifide: smoke 435 / dust 453 / pollen 450 CFM (ahamdir.com, model 3613111100, listed as "Pure Blue 211i Max"). The highest Verifide CADR in this file. Note that AHAM records this model's filter type as "Fabric", not HEPA. |
| AHAM Verifide Room Size (4.8 ACH) (ft²) | Not listed in the AHAM Verifide directory (August 2026) | 674 ft² (AHAM Verifide suggested room size at 4.8 air changes per hour) — and Blueair publishes exactly 674 ft² at 4.8 ACH on its own page |
| Coverage Claim & Its Air-Change Basis | "Up to 1000 sq ft (92.9 m²) with avg. 8-ft. ceilings" — no air-change basis is given at all. With no CADR published there is no way to derive one, so the 1,000 ft² figure cannot be checked against any standard. | Blueair's own product page leads with "674 sq ft" and "4.8 air changes per hour", which is the correct figure correctly labelled. The retail listing title, by contrast, says "Large Rooms up to 3,235 Sq Ft" — that is 674 × 4.8, i.e. the 1-ACH number. Same product, two claims a factor of 4.8 apart. |
| Filter Grade (True HEPA / HEPA-Type / H13) | PECO-HEPA Tri-Power: a True HEPA layer claimed at 99.97% of small particles, a light-activated PECO (photo-electrochemical oxidation) layer said to destroy organic pollutants, and a carbon layer for gases. The PECO layer is the marketing centrepiece and the part with no CADR-equivalent metric behind it. | HEPASilent: a two-part system that electrostatically charges particles before a loosely woven fabric media collects them, plus activated carbon. Blueair claims 99.97% of airborne particles. It is not a mechanical H13 filter and AHAM logs the filter type as "Fabric" — the efficiency comes from the charging stage as much as the media. |
| Pre-Filter (Washable?) | None separate and none washable — the pre-filtration is part of the single Tri-Power cartridge | Yes — washable textile pre-filter sleeve, which is also the unit's colour panel. Machine-washable, no recurring cost. |
| Filter Cost per Year | $349.98/yr — PECO-HEPA Tri-Power filter $174.99, replaced every 6 months per Molekule. That is by far the highest running cost here: over three years the filters cost more than the Blueair, the Winix and the Coway combined, and roughly a third of the machine's own price every single year. | $79.99–$93.32/yr — Particle & Carbon Filter $69.99 ($59.50 on subscription) with Blueair's RealTrack algorithm calling replacement at up to 9 months, i.e. about 1.33 filters a year. The AllergenBlock variant is $89.99 ($76.50) and SmokeBlock $84.99 ($72.25), pushing it to $100–120/yr. |
| Ioniser / UV / PCO & CARB Classification | PECO is a photocatalytic oxidation process, not an ioniser, but it is still an active air-chemistry stage rather than pure filtration and it cannot be switched off independently of the machine. Molekule's own FDA criteria table states the unit "Does not product [sic] ozone". CARB nonetheless certifies the Air Pro SQ2PH-US as an ELECTRONIC device (EO G-24-246, notified 2024-11-05) — the category CARB uses for devices capable of generating ozone that tested at or below 0.050 ppm. Every Molekule model in the CARB list, back to the 2017 Home One, is classified Electronic. | HEPASilent's ion-charging stage is integral to how the unit filters and CANNOT be switched off — unlike the Coway ioniser or Winix PlasmaWave, there is no button. CARB certifies the Blue Pure 211i Max as an ELECTRONIC device (Blueair AB, EO G-23-076, notified 2023-04-19), meaning ozone-capable and tested at or below 0.050 ppm. Blueair's product page makes no ozone statement at all. Every Blueair model in the CARB list is classified Electronic. |
| Noise, Lowest to Highest Setting (dB) | 33 dBA lowest speed to 64 dBA highest (Molekule published). Both ends are the loudest in this file — the 33 dBA floor is above the Medify's sleep mode and 10 dB above the Blueair and Levoit. | 23 dB lowest to 53 dB highest (Blueair published) |
| Air Quality Sensor | The most comprehensive here: particulate matter PM1, PM2.5 and PM10 down to 0.3 µm, plus VOCs, CO2 and relative humidity. Molekule notes that the Air Pro "senses but does not destroy CO2 or RH". | Genuine multi-channel particulate sensing: PM1, PM2.5 and PM10, feeding auto mode and the app's history. One of only three units here that resolve PM1. |
| Smart Features & Offline Operation | Wi-Fi, the Molekule app and Alexa require an account. Air-quality reporting, history and filter notifications are app-side. Basic fan control works on the device. | Wi-Fi and the Blueair app require an account. Fan speed, auto mode and night mode all work from the physical dial with no internet; filter tracking, air-quality history and scheduling do not. |
| Power Draw & Annual Energy | Not published by Molekule on the US Air Pro page | 46W (Blueair published); AHAM-measured 44.0W at the smoke-CADR speed and 256 kWh annual energy consumption. That is 435 CFM of smoke CADR for 44W — comfortably the best clean-air-per-watt here. |
| Warranty Terms & Conditions | 2-year limited warranty. Worth weighing against the company's history: Molekule Inc. filed for Chapter 11 in 2023 and the brand now trades under new ownership, and as of August 2026 both the Air Pro and the Air Mini+ show as sold out on molekule.com. | 1-year standard, extended to 3 years only if you register the product |
| Warranty | 24 months | 12 months |
| Colors | Silver | Sand, Stockholm Fog, Moss, Limestone |
Category Scores
Coverage-Claim Honesty
The Blueair Blue Pure 211i Max (3613111100) leads clearly here, 8.0 against 2.0 — a 6.0-point margin on the trap dimension for this category. Almost every brand derives its headline square footage from ONE air change per hour, which does close to nothing for smoke, pollen or wildfire particulate — the useful standard is 4.8 air changes an hour, and it is typically a fifth of the number on the box. A high score means the manufacturer publishes the 4.8-ACH figure prominently and it survives comparison with the AHAM Verifide room size; a low score means a big number with no stated air-change basis, or no CADR at all to derive one from.. If that is what you are buying for, the Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) does not close the gap elsewhere.
Verified Clean-Air Delivery
The Blueair Blue Pure 211i Max (3613111100) leads clearly here, 9.5 against 3.5 — a 6.0-point margin on how much air the unit actually cleans per minute, weighted heavily toward AHAM Verifide smoke CADR over manufacturer-published figures. Self-reported CADR scores below Verifide CADR, and 'no CADR published at all' scores below both. If that is what you are buying for, the Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) does not close the gap elsewhere.
Filtration Quality
The Blueair Blue Pure 211i Max (3613111100) leads clearly here, 7.5 against 7.0 — a 0.5-point margin on what the media is really rated at — sealed H13, True HEPA, HEPA-Type, EPA 12 or charged fabric — whether the whole machine is sealed so air cannot bypass the filter, and how much genuine activated carbon there is for odours and VOCs. If that is what you are buying for, the Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) does not close the gap elsewhere.
Running Cost
The Blueair Blue Pure 211i Max (3613111100) leads clearly here, 5.5 against 1.5 — a 4.0-point margin on filters, pre-filters, cartridges and subscriptions over three years, against the purchase price. Several units here cost more to feed than to buy; a high score means cheap, long-lived, non-proprietary consumables. If that is what you are buying for, the Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) does not close the gap elsewhere.
Quietness
The Blueair Blue Pure 211i Max (3613111100) leads clearly here, 8.0 against 3.5 — a 4.5-point margin on measured decibels at the lowest setting you would run overnight AND at the top speed you need in a smoke event — a purifier is only useful at a speed you can tolerate. Not publishing a figure at either end costs points. If that is what you are buying for, the Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) does not close the gap elsewhere.
Sensor Quality
The Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) leads clearly here, 9.0 against 8.5 — a 0.5-point margin on whether there is a real laser particle sensor resolving PM1/PM2.5/PM10 with numeric output, a vaguer 'air quality' index, an inference from a cheap VOC element, or no sensor and therefore no auto mode at all. If that is what you are buying for, the Blueair Blue Pure 211i Max (3613111100) does not close the gap elsewhere.
Freedom From Ozone & Air Chemistry
The Blueair Blue Pure 211i Max (3613111100) leads clearly here, 6.5 against 5.5 — a 1.0-point margin on whether the unit adds an ioniser, plasma, UV or photocatalytic stage to the airstream, whether that stage can be switched off, and how CARB classifies the device — 'Mechanical' means filtration only, 'Electronic' means capable of generating ozone and certified only as being at or below 0.050 ppm. If that is what you are buying for, the Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) does not close the gap elsewhere.
Controls & Independence
The Blueair Blue Pure 211i Max (3613111100) leads clearly here, 8.0 against 6.0 — a 2.0-point margin on whether every mode works from the machine itself with no account or cloud, how good the auto mode is, filter-change access, and whether losing a remote or a login costs you function. If that is what you are buying for, the Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) does not close the gap elsewhere.
Best For
Choose the Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) if…
- • You prefer the Molekule ecosystem, app, and design language.
Choose the Blueair Blue Pure 211i Max (3613111100) if…
- • Coverage-Claim Honesty matters most to you — the Blueair Blue Pure 211i Max (3613111100) scores 8.0/10 here (the trap dimension for this category. Almost every brand derives its headline square footage from ONE air change per hour, which does close to nothing for smoke, pollen or wildfire particulate — the useful standard is 4.8 air changes an hour, and it is typically a fifth of the number on the box. A high score means the manufacturer publishes the 4.8-ACH figure prominently and it survives comparison with the AHAM Verifide room size; a low score means a big number with no stated air-change basis, or no CADR at all to derive one from.).
- • Verified Clean-Air Delivery matters most to you — the Blueair Blue Pure 211i Max (3613111100) scores 9.5/10 here (how much air the unit actually cleans per minute, weighted heavily toward AHAM Verifide smoke CADR over manufacturer-published figures. Self-reported CADR scores below Verifide CADR, and 'no CADR published at all' scores below both).
- • Quietness matters most to you — the Blueair Blue Pure 211i Max (3613111100) scores 8.0/10 here (measured decibels at the lowest setting you would run overnight AND at the top speed you need in a smoke event — a purifier is only useful at a speed you can tolerate. Not publishing a figure at either end costs points).
- • Running Cost matters most to you — the Blueair Blue Pure 211i Max (3613111100) scores 5.5/10 here (filters, pre-filters, cartridges and subscriptions over three years, against the purchase price. Several units here cost more to feed than to buy; a high score means cheap, long-lived, non-proprietary consumables).
- • Controls & Independence matters most to you — the Blueair Blue Pure 211i Max (3613111100) scores 8.0/10 here (whether every mode works from the machine itself with no account or cloud, how good the auto mode is, filter-change access, and whether losing a remote or a login costs you function).
Pros & Cons
Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US)
Pros
- +Six-channel sensing — PM1/2.5/10, VOC, CO2 and humidity — is the deepest air-quality picture here
- +Holds an FDA 510(k) Class II clearance, which no other consumer unit in this file does
- +Aluminium body with a carry handle rather than the usual moulded plastic tower
- +The HEPA layer underneath the PECO stage is real True HEPA, so it works as a filter regardless of the PECO claims
- +App-side air-quality reporting and history are genuinely detailed
Cons
- −No CADR published and no AHAM listing, so on a $1,015 machine there is no measure of how much air it actually cleans
- −$174.99 filters every 6 months is $349.98 a year — a third of the purchase price, annually, and the worst running cost here by a factor of three
- −CARB classifies the Air Pro as an Electronic (ozone-capable) device even though Molekule's own FDA table says it produces no ozone
- −33 dBA on the lowest setting is louder than most of this field's mid speeds; 64 dBA at the top is conversation-drowning
- −Molekule filed Chapter 11 in 2023 and both current purifiers show as sold out on molekule.com in August 2026 — filter supply is a real risk on a 2-year warranty
- −The "1,000 sq ft" claim has no air-change basis and no CADR to derive one from
Blueair Blue Pure 211i Max (3613111100)
Pros
- +435 CFM AHAM Verifide smoke CADR — the most verified clean air of anything here at any price
- +44W for that output is the best efficiency in this file by a wide margin
- +Blueair's own page leads with the honest 674 ft² at 4.8 ACH, not the 3,235 ft² retail headline
- +23 dB minimum with real PM1/PM2.5/PM10 sensing driving auto mode
- +Washable fabric pre-filter doubles as the colour panel, so it costs nothing to maintain
Cons
- −The HEPASilent ion-charging stage cannot be turned off — CARB classifies the unit as an Electronic (ozone-capable) device and Blueair makes no ozone statement on the page
- −AHAM records the filter type as "Fabric": this is charged-media filtration, not a mechanical H13 element
- −The retail listing's "up to 3,235 Sq Ft" is Blueair's own 674 ft² multiplied by 4.8 — a 1-ACH number
- −1-year warranty unless you register, and even then 3 years is short next to Honeywell's 5
- −$69.99–$89.99 filters at up to 9 months is $80–120/yr, twice the Coway's $54.99
Shop by Need
FAQs
Is the Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) or Blueair Blue Pure 211i Max (3613111100) better overall?+
Based on our 8-category scoring, the Blueair Blue Pure 211i Max (3613111100) comes out ahead overall. See the full breakdown in the scores section above — the right pick still depends on which categories matter most for your use case.
Which is better for Coverage-Claim Honesty, the Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) or the Blueair Blue Pure 211i Max (3613111100)?+
The Blueair Blue Pure 211i Max (3613111100) scores higher on Coverage-Claim Honesty (8.0/10 vs 2.0/10) — the trap dimension for this category. Almost every brand derives its headline square footage from ONE air change per hour, which does close to nothing for smoke, pollen or wildfire particulate — the useful standard is 4.8 air changes an hour, and it is typically a fifth of the number on the box. A high score means the manufacturer publishes the 4.8-ACH figure prominently and it survives comparison with the AHAM Verifide room size; a low score means a big number with no stated air-change basis, or no CADR at all to derive one from..
Which is better for Verified Clean-Air Delivery, the Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) or the Blueair Blue Pure 211i Max (3613111100)?+
The Blueair Blue Pure 211i Max (3613111100) scores higher on Verified Clean-Air Delivery (9.5/10 vs 3.5/10) — how much air the unit actually cleans per minute, weighted heavily toward AHAM Verifide smoke CADR over manufacturer-published figures. Self-reported CADR scores below Verifide CADR, and 'no CADR published at all' scores below both.
Which is better for Quietness, the Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) or the Blueair Blue Pure 211i Max (3613111100)?+
The Blueair Blue Pure 211i Max (3613111100) scores higher on Quietness (8.0/10 vs 3.5/10) — measured decibels at the lowest setting you would run overnight AND at the top speed you need in a smoke event — a purifier is only useful at a speed you can tolerate. Not publishing a figure at either end costs points.
Which is better for Running Cost, the Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) or the Blueair Blue Pure 211i Max (3613111100)?+
The Blueair Blue Pure 211i Max (3613111100) scores higher on Running Cost (5.5/10 vs 1.5/10) — filters, pre-filters, cartridges and subscriptions over three years, against the purchase price. Several units here cost more to feed than to buy; a high score means cheap, long-lived, non-proprietary consumables.
Is the Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) worth the price difference over the Blueair Blue Pure 211i Max (3613111100)?+
The Blueair Blue Pure 211i Max (3613111100) is the cheaper option at $349.99 versus $1,014.99. Whether the pricier model is "worth it" depends on how much you value its lead in Coverage-Claim Honesty.
Which is better suited to my use case?+
The Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) is the better fit if you mainly care about large-room or wildfire-smoke. The Blueair Blue Pure 211i Max (3613111100) is the better fit for aham-verifide.
What's the warranty on the Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) vs the Blueair Blue Pure 211i Max (3613111100)?+
The Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) ships with a 24-month warranty; the Blueair Blue Pure 211i Max (3613111100) ships with a 12-month warranty. Always confirm current terms on the manufacturer's site before buying.
Should I wait for the next model instead of buying either of these?+
If either model is more than two years old, a successor may be close — check the "Latest Model" link on each product page. Otherwise, both are current, well-supported options and there's no strong reason to wait.
Cheaper Option
Alen BreatheSmart 75i (V2) — $799.00
Premium Option
Shark NeverChange Air Purifier MAX (HP302) — $399.99
Specifications and prices for both products last verified . Scores are calculated from published specifications — see how we compare products.