Head to head
Honeywell HPA300 HEPA Air Purifier vs Coway Airmega 250
Coway Airmega 250 leads 3 to 2 on the 5 rankable specs, but Honeywell HPA300 HEPA Air Purifier costs $150 less.
Catalog as of September 1, 2026
Why, in numbers
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Compare a different air purifier
Levoit Core 300S Smart True HEPA Air Purifier$149Winix 5500-2 Air Purifier$159Levoit Core 400S$219Coway Airmega AP-1512HH Mighty$229Blueair Blue Pure 311i Max$229Levoit Core 600S Smart True HEPA$299Blueair Blue Pure 211+ Auto$339Coway Airmega 400$549Blueair Protect 7470i$649Alen BreatheSmart 75i Large Room Air Purifier$749Dyson Purifier Hot+Cool Formaldehyde HP09$799Buying for
Straight answer
Overall: 2 to 3
Buy the Coway Airmega 250.
- Leads 3 of 5 rankable overall specs; Honeywell HPA300 HEPA Air Purifier takes 2.
- Coverage area: 930 sq ft vs 465 sq ft
- Filter life: 12 months vs 3 months
- Honeywell HPA300 HEPA Air Purifier is $150 cheaper. Pay the difference only if coverage area matters to you.
At a glance
The handful of numbers that decide most purchases in this category.
CADR
Honeywell
300 CFM (Smoke), 320 CFM (Dust), 300 CFM (Pollen)
Coway
249 CFM (Smoke), 261 CFM (Dust), 230 CFM (Pollen)
Coverage area
Honeywell
465 sq ft (4.8 air changes/hr) / 2,250 sq ft (1 air change/hr)
Coway
930 sq ft (2 air changes/hr) / 465 sq ft (4 air changes/hr)
True 3-Year Cost of Ownership (TCO)
Honeywell HPA300 HEPA Air Purifier
Coway Airmega 250
Room Placement & Bedroom Noise Check
Physical clearance required for airflow, wall placement, and bedroom noise levels.
Wall Clearance Required
Front grille intake: can back up close to baseboards
Bottom & dual-side intake: sits flush against back wall
Nighttime Sleep Mode Noise
30 dB lowest fan speed (noticeable background white noise)
22 dB sleep mode with auto-dimming LED light sensor
Unit Footprint & Dimensions
Large commercial-grade shell (20.8 × 22.3 × 10.8 in; 17.0 lb)
Modern slim tower (19.7 × 18.5 × 8.3 in; 20.5 lb)
The 90-Day Owner Regret Check
Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.
Honeywell: What to watch for
- Maintenance
Requires periodic filter replacements to maintain airflow and odor capture.
Coway: What to watch for
- Maintenance
Requires periodic filter replacements to maintain airflow and odor capture.
Performance
3 differences| CADR | 300 CFM (Smoke), 320 CFM (Dust), 300 CFM (Pollen) (wins this row: higher) | 249 CFM (Smoke), 261 CFM (Dust), 230 CFM (Pollen) |
|---|---|---|
| Room size | Extra large rooms, master suites, open spaces up to 465 sq ft (4.8 ACH) | Large bedrooms, apartments, living rooms, and open layouts up to 930 sq ft |
| Coverage area | 465 sq ft (4.8 air changes/hr) / 2,250 sq ft (1 air change/hr) | 930 sq ft (2 air changes/hr) / 465 sq ft (4 air changes/hr) (wins this row: higher) |
Filters
leads 1-0| Filter types | Type A Activated Carbon Pre-filter + 3× Type R True HEPA filters | EZ-clean Washable Pre-filter + Max2 Green True HEPA and Activated Carbon filter |
|---|---|---|
| Filter life | 3 months (Pre-filter) / 12 months (True HEPA filters) | 12 months (Max2 filter) / Washable slide-out pre-filter (wins this row: higher) |
Usability & Smart
leads 1-0| Noise levels | 38 dB (Low) – 58 dB (Turbo) | 22 dB (Sleep mode) – 54 dB (Max speed) (wins this row: lower) |
|---|---|---|
| Energy consumption | 130 W max power consumption | 60 W max power consumption (Energy Star Certified) |
| Smart features | No (manual touch controls with 2/4/8 hr auto-off timer) | Smart Auto Mode, Rapid Mode, Eco Mode, and Sleep Mode |
| Air quality sensors | No automated air quality sensors (filter replacement indicators) | Real-time particle sensor with colorful LED air quality indicator |
Design & Ownership
leads 1-0| Weight | 17.0 lb (7.7 kg) (wins this row: lower) | 20.5 lb (9.3 kg) |
|---|---|---|
| Warranty | 5 years manufacturer limited warranty | 5 years limited warranty on motor / 1 year electronic parts |
Which one should you buy
Pick this one if
Honeywell HPA300 HEPA Air Purifier
Extra-large room True HEPA air purifier with Turbo Clean mode, dual-stage filtration, and AHAM Verifide CADR ratings for large rooms.
- Powerful high-volume CADR (300+ CFM) for large rooms up to 465 sq ft
- Certified True HEPA captures 99.97% of airborne particles
- Durable workhorse build with touch-button controls
What you give up
- High power consumption (up to 130W on Turbo)
- No Wi-Fi app or smart automated air quality sensors
Pick this one if
Coway Airmega 250
Modern slim aesthetic air purifier with Green True HEPA Max2 filtration, covering up to 930 sq ft, Smart Auto mode, and easy-clean washable pre-filter.
- Green True HEPA filter captures 99.999% of 0.01-micron ultrafine particles and neutralizes odors
- Easy-to-clean EZ-pull front pre-filter slides out from the top without opening the machine
- Covers up to 930 sq ft with Smart Auto Mode and real-time PM2.5 particle sensor LED ring
What you give up
- No Wi-Fi app connectivity on the standard 250 model (app available on 250S variant)
- Substantial 20.5 lb weight
Best for each use
Bedrooms
Tied on bedrooms. Honeywell HPA300 HEPA Air Purifier is cheaper.
Big rooms & allergies
For big rooms & allergies, buy the Coway Airmega 250.
Low running cost
Too close to call on low running cost from the spec sheets. Only filter life is rankable here.
Done deciding?
Open the full standalone spec sheet for either device.
Manufacturer pages: Honeywell HPA300 HEPA Air Purifier ↗ · Coway Airmega 250 ↗
Common questions
Which is cheaper, the Honeywell HPA300 HEPA Air Purifier or the Coway Airmega 250?
Honeywell HPA300 HEPA Air Purifier costs $150 less at list price.
What is the biggest catch with the Honeywell HPA300 HEPA Air Purifier or Coway Airmega 250?
Honeywell HPA300 HEPA Air Purifier has this deal-breaker: over 55 dB on high. Louder than normal conversation at full speed.
Which is better for bedrooms, the Honeywell HPA300 HEPA Air Purifier or the Coway Airmega 250?
Tied on bedrooms. Honeywell HPA300 HEPA Air Purifier is cheaper. The 2 rankable bedrooms specs split 1 to 1. Saves $150 at list price.
What cannot be compared from spec sheets?
Of the 11 specs tracked here, 6 are descriptive and cannot be ranked on numbers alone. Spec sheets also cannot measure subjective factors like build quality, real-world performance, or comfort.