Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Blueair - Blue Pure 311i+ Max | Molekule - Air Pro |
|---|---|---|
| Coverage | 35 m² | 93 m² |
| Min noise | 23 dB | 30 dB |
| True HEPA H13+ | true | false |
Between the Blue Pure 311i+ Max and Air Pro, the Blue Pure 311i+ Max comes out ahead in min noise / true hepa h13+, while the Air Pro wins on coverage. Overall, the Blue Pure 311i+ Max scores 77.4 and the Air Pro scores 70.2 on our Mars Score.
Which should you buy?
The Blue Pure 311i+ Max edges ahead on the Mars Score (77.4 vs 70.2), but the 7.2-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Blue Pure 311i+ Max if you care most about min noise / true hepa h13+. The biggest gaps in its favor are min noise, true hepa h13+. The single most decisive one: Min noise — 7.00 dB less. 23 vs 30.
Pick the Air Pro if you care most about coverage. Its strongest claims are coverage. The single most decisive one: Coverage — 165.71% more. 93 m² vs 35 m².
Both ship with comparable cadr, activated carbon, so those specs do not separate the two — focus on the differences below.
Bottom line: the Blue Pure 311i+ Max is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Which should you buy: Blueair - Blue Pure 311i+ Max or Molekule - Air Pro?
Blueair - Blue Pure 311i+ Max leads the current Mars Score by 7.2 points.The more useful decision is the trade-off behind that result: compare coverage, true hepa h13+, min noise against the way you will actually use the product.
Choose Blueair - Blue Pure 311i+ Max if…
Blueair - Blue Pure 311i+ Max has the measurable edge on noise db min, has hepa 13.
Choose Molekule - Air Pro if…
Molekule - Air Pro has the measurable edge on coverage m2.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Blueair - Blue Pure 311i+ Max wins
- ▲Min noise — 7.00 dB less. 23 vs 30.
- ▲Has True HEPA H13+.
Why Molekule - Air Pro wins
- ▲Coverage — 165.71% more. 93 m² vs 35 m².
Spec comparison
Performance
| Spec | Blueair - Blue Pure 311i+ Max | Molekule - Air Pro |
|---|---|---|
| CADR | 500 m³/h | 500 m³/h |
| Coverage | 35 m² | 93 m²lead |
| True HEPA H13+ | truelead | false |
| Activated carbon | true | true |
Smart & Noise
| Spec | Blueair - Blue Pure 311i+ Max | Molekule - Air Pro |
|---|---|---|
| Min noise | 23 dBlead | 30 dB |
| Air quality sensor | true | true |
| Smart app | true | true |