Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Honeywell - HPA300 | IQAir - HealthPro Plus |
|---|---|---|
| Coverage | 44 m² | 85 m² |
| CADR | 510 m³/h | 470 m³/h |
| Min noise | 32 dB | 25 dB |
Between the HPA300 and HealthPro Plus, the HPA300 comes out ahead in cadr, while the HealthPro Plus wins on coverage / min noise. Overall, the HPA300 scores 74.4 and the HealthPro Plus scores 83.6 on our Mars Score.
Which should you buy?
The HealthPro Plus is the clear pick on raw spec strength, leading by 9.2 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. The biggest gaps in its favor are cadr. The single most decisive one: CADR — 8.51% more. 510 m³/h vs 470 m³/h.
Pick the HealthPro Plus if you care most about coverage / min noise. Its strongest claims are coverage, min noise. The single most decisive one: Coverage — 93.18% more. 85 m² vs 44 m².
Both ship with comparable true hepa h13+, activated carbon, so those specs do not separate the two — focus on the differences below.
Bottom line: the HealthPro Plus 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: Honeywell - HPA300 or IQAir - HealthPro Plus?
IQAir - HealthPro Plus leads the current Mars Score by 9.2 points.The more useful decision is the trade-off behind that result: compare cadr, coverage, min noise against the way you will actually use the product.
Choose Honeywell - HPA300 if…
Honeywell - HPA300 has the measurable edge on cadr m3h.
Choose IQAir - HealthPro Plus if…
IQAir - HealthPro Plus has the measurable edge on coverage m2, noise db min.
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 Honeywell - HPA300 wins
- ▲CADR — 8.51% more. 510 m³/h vs 470 m³/h.
Why IQAir - HealthPro Plus wins
- ▲Coverage — 93.18% more. 85 m² vs 44 m².
- ▲Min noise — 7.00 dB less. 25 vs 32.
Spec comparison
Performance
| Spec | Honeywell - HPA300 | IQAir - HealthPro Plus |
|---|---|---|
| CADR | 510 m³/hlead | 470 m³/h |
| Coverage | 44 m² | 85 m²lead |
| True HEPA H13+ | true | true |
| Activated carbon | true | true |
Smart & Noise
| Spec | Honeywell - HPA300 | IQAir - HealthPro Plus |
|---|---|---|
| Min noise | 32 dB | 25 dBlead |
| Air quality sensor | false | false |
| Smart app | false | false |