Air Purifiers / Molekule
Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US)
The most sensors, the fewest published numbers, and $350 of filters every single year.
Overall score 4.8/10
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
Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) review: what the specs say
The most sensors, the fewest published numbers, and $350 of filters every single year. At $1,014.99, Molekule's 2024 model sits at the premium end of the category — the air Purifiers we compare run from $49.99 to $1,014.99. It scores 4.8/10 overall, calculated from published specifications across 8 categories rather than from a subjective impression.
Its strongest showing is Sensor Quality at 9.0/10 — 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. The weakest is Running Cost at 1.5/10, which is the trade-off to weigh before buying: if that is the specification you care about most, one of the alternatives below will serve you better.
Worth knowing before you buy: no CADR published and no AHAM listing, so on a $1,015 machine there is no measure of how much air it actually cleans; and $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. Every specification on this page comes from Molekule's own documentation or a verified retail listing — where a figure is not published, the table says so rather than estimating it.
Specifications and price last verified . Report an error
Full Specifications
| AHAM Verifide CADR (Smoke / Dust / Pollen) | 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. CFM |
| AHAM Verifide Room Size (4.8 ACH) | Not listed in the AHAM Verifide directory (August 2026) ft² |
| 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. |
| 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. |
| Pre-Filter (Washable?) | None separate and none washable — the pre-filtration is part of the single Tri-Power cartridge |
| 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. |
| 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. |
| Noise, Lowest to Highest Setting | 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. dB |
| 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". |
| 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. |
| Power Draw & Annual Energy | Not published by Molekule on the US Air Pro page |
| 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. |
| Connectivity | 2.4GHz Wi-Fi, Molekule app, Amazon Alexa |
| Material | Aluminium shell with a carry handle (Molekule does not specify the handle material on the US page) |
| Warranty | 24 months |
Compare Molekule Air Pro with PECO-HEPA Tri-Power filter (SQ2PH-US) With
Cheaper Alternative
Alen BreatheSmart 75i (V2) — $799.00