Honeywell HPA300
#10 in Large roomsFull review
A proven, no-frills large-room HEPA purifier for anyone who wants high certified CADR without an app.
Amazon $234.95$234.95
3.3/5
A premium large-room purifier with long-lasting filters, for buyers willing to pay for quiet and a subscription-backed guarantee.
- 370 cfmSmoke CADR
- 574 sq ftRoom size
- $99/yearFilters
- 25 to 51 dBNoise
Check price at Amazon$699.59
Price checked October 22, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Certified 370 CFM clears big rooms
- Filter lasts 12 to 15 months, so about $100 a year
- Quiet 25 dB on low
- Ionizer can be switched off
Cons
- Expensive at about $700
- The lifetime guarantee requires a filter subscription
- Heavy at 27 lb
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its room size. How we rank explains each one.
Specifications
| Model number | BreatheSmart 75i_V2 |
|---|---|
| Performance | |
| Smoke CADR | 370 cfm |
| Dust CADR | 351 cfm |
| Pollen CADR | 431 cfm |
| PM2.5 CADR | 360 cfm |
| CADR certified by | ENERGY STAR |
| Room size (AHAM) | 574 sq ft |
| Coverage (maker) | 2,800 sq ft |
| Noise | 25 to 51 dB |
| Efficiency | |
| Efficiency (IEF) | 6.9 cfm/W |
| ENERGY STAR | Yes |
| Energy use | 304 kWh/year |
| Power at top speed | 55 W |
| Filters | |
| Filter | HEPA (Essential/Pure filter as sold in this listing) |
| Activated carbon | No |
| Replacement | Essential (Pure), formerly B7 |
| Replacement cost | $99 every 12 months |
| Yearly filter cost | $99/year |
| Ionizer | Yes, can be switched off |
| CARB certified (ozone) | Yes |
| Controls and build | |
| Air-quality sensor | particle |
| Auto mode | Yes |
| Wi-Fi app | Yes |
| Fan speeds | 5 |
| Dimensions | 27 x 18.5 x 11.5 in |
| Weight | 27 lb |
Alternatives in this room size
Coway Airmega 350
#11 in Large roomsFull review
For big rooms where you want high certified airflow and low running costs without app features.
Amazon $339$339
Levoit EverestAir
#13 in Large roomsFull review
A premium Levoit for a large room where floor space is tight. The Core 600S cleans a bit more air for less money if you have the floor space.
Amazon $499.99$499.99
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