Coway
Coway Airmega 400
Air purifiers
$549List price
Explore this product Your shortlist, side by side
Coway Airmega 400 vs Blueair Blue Pure 211+ Auto
Find the differences that matter for your next decision.
Blueair
Blueair Blue Pure 211+ Auto
Air purifiers
$339List price
Explore this product What matters most to you?
Start with all rankable specifications, or focus on a particular use.
Your starting point
Buy the Coway Airmega 400.
- Leads 4 of 6 rankable overall specs; Blueair Blue Pure 211+ Auto takes 2.
- Coverage area: 1,560 sq ft vs 550 sq ft
How we reached this
We compare the published specifications relevant to your priority. Each rankable specification counts once; your selected requirements can rule a product out. This is a guide to the numbers, not a laboratory performance score.
Filter life: 12 months vs 6 months
Blueair Blue Pure 211+ Auto is $210 cheaper. Pay the difference only if coverage area matters to you.
The trade-off to know
Coway Airmega 400: Cube design has a large floor footprint
Look at the differences ↓Refine your requirements
What would rule one out?
Side by side
The differences, in detail.
Start with the key specs, then explore as much as you need.
| What you’re comparing | Coway Airmega 400 | Blueair Blue Pure 211+ Auto |
|---|---|---|
| CADRPerformance | 350 CFM (Smoke), 328 CFM (Dust), 400 CFM (Pollen) | 353 CFM (Smoke), 347 CFM (Dust), 380 CFM (Pollen) |
| Room sizePerformance | Large living rooms, open floor plans, offices | Large living rooms, open floor plans, master suites |
| Coverage areaPerformance | 1,560 sq ft (2 air changes/hr) / 780 sq ft (4 air changes/hr) | 550 sq ft (4.8 air changes/hr) / 1,320 sq ft (2 air changes/hr) |
| Filter typesFilters | Washable Pre-filter + Max2 Filter (True HEPA + Activated Carbon) | Washable fabric pre-filter + HEPASilent main filter (Particle + Carbon) |
| Filter lifeFilters | 12 months (Max2 filter) / Washable pre-filters | 6 months |
Showing 5 of 11 specifications. Missing values stay unlisted. About the sources
Both sides of the decision
What you gain. What you give up.
Coway Airmega 400
Reasons to choose it
- Massive CADR cleans up to 1,560 sq ft twice per hour
- Dual-sided air intake with combined True HEPA and carbon filters
- Smart Eco mode turns off fan when air remains clean for 30 minutes
Worth considering
- Cube design has a large floor footprint
- No mobile app connectivity on the non-S model
Blueair Blue Pure 211+ Auto
Reasons to choose it
- High 353 CFM CADR cleans a 550 sq ft living room in just 12.5 minutes
- HEPASilent electrostatic + mechanical filtration maximizes airflow and efficiency
- Interchangeable washable fabric pre-filters in multiple designer colors
Worth considering
- No mobile app or Wi-Fi schedule controls (one-button operation)
- Reaches 56 dB at highest turbo fan setting
Beyond the spec sheet
Living with your choice.
Explore the ownership details available for this pair.
What three years could cost
Coway Airmega 400
3-Year Estimated Total$819
Blueair Blue Pure 211+ Auto
3-Year Estimated Total$474
Everyday ownership notes
Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.
Coway: What to watch for
- Maintenance
Requires periodic filter replacements to maintain airflow and odor capture.
Blueair: What to watch for
- Maintenance
Requires periodic filter replacements to maintain airflow and odor capture.
Know what’s behind the comparison
Published specs. Visible sources.
Clinchmark compares manufacturer specifications and other published information. We have not independently lab-tested these products. Editorial assessments and unknown values are identified in the specification details.
Catalog snapshot: September 1, 2026. Prices, availability, and provider terms can change.
Still weighing it up?
Which is cheaper, the Coway Airmega 400 or the Blueair Blue Pure 211+ Auto?
Blueair Blue Pure 211+ Auto costs $210 less at list price.
What is the biggest catch with the Coway Airmega 400 or Blueair Blue Pure 211+ Auto?
Both has this deal-breaker: no Wi-Fi app. No schedules or remote control from your phone.
Which is better for bedrooms, the Coway Airmega 400 or the Blueair Blue Pure 211+ Auto?
Tied on bedrooms. Blueair Blue Pure 211+ Auto is cheaper. The 2 rankable bedrooms specs split 1 to 1. Saves $210 at list price.
What cannot be compared from spec sheets?
Of the 11 specs tracked here, 5 are descriptive and cannot be ranked on numbers alone. Spec sheets also cannot measure subjective factors like build quality, real-world performance, or comfort.