Honeywell HPA300 True HEPA Purifier
The Honeywell HPA300 True HEPA Purifier delivers verified AHAM CADR performance (300 Smoke / 300 Dust) for rooms up to 465 sq ft. Featuring multi-stage H13 True HEPA and active odor adsorption.
3-Year True Cost of Ownership Model
AHAM AC-1 verified room air filtration throughput for fine particulate and smoke reduction.
Acoustically evaluated across whisper-quiet sleep mode and maximum turbo airflow settings.
Sized for 4.8 air changes per hour (ACH) in designated living room and bedroom layouts.
Total routine scheduled replacement filter expense projected over continuous operation.
- Certified 300 Smoke CADR rating
- Whisper-quiet sleep mode (38)
- Energy Star low power consumption
- Real-time air quality sensor
- Replacement filter required every 6 to 12 months
- Coverage capped at 465 sq ft
Verified Engineering Specifications
| Nominal Dimensions | Round / Custom Cartridge | Actual Dimensions | Integrated Machine Unit |
|---|---|---|---|
| Filter Depth | Standalone Unit | Media Construction | H13 True HEPA & Granular Carbon |
| Initial Resistance | Integrated Variable Multi-Speed Blower | Airflow Capacity | 465 sq ft @ 4.8 ACH (1116 sq ft @ 2 ACH) |
| Smoke CADR | 300 CFM | Dust / Pollen CADR | 320 / 300 CFM |
| Acoustic Noise | 38 – 56 dB | Rated Room Coverage | 465 sq ft @ 4.8 ACH (1116 sq ft @ 2 ACH) |
| Replacement Filter Cost | $69.99 | Replacement Interval | Every 12 (HEPA) / 3 (Pre-filter) months |
| Annual Consumable Cost | $79.99/yr | Compatible Equipment | Honeywell Home HPA300 System |
Our Take on the Honeywell HPA300 True HEPA Purifier
An exceptionally reliable room air purifier with whisper-quiet operation (38 min noise) and proven particle removal.
Filtration Performance Note
Traps 99.97% of particles down to 0.3 microns, including pollen, pet dander, mold spores, and airborne smoke particles.
Installation, Airflow Direction & Maintenance Protocol
Place 12 inches away from walls for unobstructed 360-degree intake. Replace HEPA filter when indicator light illuminates.
Common Questions About the Honeywell HPA300 True HEPA Purifier
What size room can the Honeywell HPA300 True HEPA Purifier handle?
It is certified for rooms up to 465 sq ft, completing roughly 5 air changes per hour in spaces of that volume.
How noisy is this purifier on low speed?
On its lowest setting, sound levels drop to 38, which is quieter than a gentle whisper.
How much do replacement filters cost for the HPA300?
Official Filter HRF-R3 & Pre-filter A replacement filters typically cost between $30 and $45 per cycle.
Comparable Air Purifiers
Coway Airmega AP-1512HH Mighty Air Purifier
When to choose: Comparable medium-room air purifier alternative.
Levoit Core 400S Smart Air Purifier
When to choose: Alternative medium-room air purifier with similar CADR profile.