Between the HPA300 and Air Pro, the HPA300 comes out ahead in cadr and true hepa h13+, while the Air Pro wins on coverage and min noise. Overall, the HPA300 scores 65 and the Air Pro scores 81.6 on our Mars Score.
Which should you buy?
The Air Pro is the clear pick on raw spec strength, leading by 16.6 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the HPA300 if you care most about cadr and true hepa h13+. The biggest gaps in its favor are cadr, true hepa h13+.
Pick the Air Pro if you care most about coverage and min noise. Its strongest claims are coverage, min noise.
Both ship with comparable activated carbon, so those specs don't separate the two — focus on the differences below.
Bottom line: the Air Pro is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why Honeywell - HPA300 wins
- ▲CADR — 2.00% more. 510 m³/h vs 500 m³/h.
- ▲Has True HEPA H13+.
Why Molekule - Air Pro wins
- ▲Coverage — 111.36% more. 93 m² vs 44 m².
- ▲Min noise — 2.00 dB less. 30 vs 32.
Spec comparison
Performance
| Spec | Honeywell - HPA300 | Molekule - Air Pro |
|---|---|---|
| CADR | 510 m³/hlead | 500 m³/h |
| Coverage | 44 m² | 93 m²lead |
| True HEPA H13+ | truelead | false |
| Activated carbon | true | true |
Smart & Noise
| Spec | Honeywell - HPA300 | Molekule - Air Pro |
|---|---|---|
| Min noise | 32 dB | 30 dBlead |
| Air quality sensor | false | truelead |
| Smart app | false | truelead |
Spec-level deep dives
vsMars is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no extra cost to you. Learn more.