Head to head

Blueair Protect 7470i vs Coway Airmega AP-1512HH Mighty

Blueair Protect 7470i leads 4 to 1 on the 5 rankable specs, but Coway Airmega AP-1512HH Mighty costs $420 less.

Catalog as of September 1, 2026

Why, in numbers

CADR: Blueair Protect 7470i lists 270 CFM (Smoke), 275 CFM (Dust), 280 CFM (Pollen) (Blueair sheet, 2026-09-02); Coway Airmega AP-1512HH Mighty lists 233 CFM (Smoke), 246 CFM (Dust), 240 CFM (Pollen) (Coway sheet, 2026-09-02).
Coverage area: Blueair Protect 7470i lists 1,035 sq ft (2 air changes/hr) / 418 sq ft (5 air changes/hr) (Blueair sheet, 2026-09-02); Coway Airmega AP-1512HH Mighty lists 361 sq ft (4.8 air changes/hr) / 874 sq ft (2 air changes/hr) (Coway sheet, 2026-09-02).
Room size: Blueair Protect 7470i lists Master bedrooms, living areas up to 418 sq ft (5 ACH) (Blueair sheet, 2026-09-02); Coway Airmega AP-1512HH Mighty lists Bedrooms, home offices, medium living rooms (Coway sheet, 2026-09-02).
Filter types: Blueair Protect 7470i lists SmartFilter with Smart RFID chip (HEPASilent Ultra + Activated Carbon) (Blueair sheet, 2026-09-02); Coway Airmega AP-1512HH Mighty lists 4-Stage: Washable Pre-filter + Deodorization Carbon + True HEPA + Vital Ion (Coway sheet, 2026-09-02).
Filter life: Blueair Protect 7470i lists 6–12 months with real-time algorithm filter tracking (Blueair sheet, 2026-09-02); Coway Airmega AP-1512HH Mighty lists 12 months (True HEPA) / 6 months (Carbon) (Coway sheet, 2026-09-02).

Manufacturer list price, not a live offer. Confirm current pricing before you buy.

Blueair Protect 7470i

$6494 spec wins

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Coway Airmega AP-1512HH Mighty

$2291 spec win

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Buying for

Every rankable spec counts once. Pick a lens to score only what matters for your air purifier.

Straight answer

Overall: 4 to 1

Buy the Blueair Protect 7470i.

Leads 4 of 5 rankable overall specs; Coway Airmega AP-1512HH Mighty takes 1.
CADR: 270 CFM vs 233 CFM
Coverage area: 1,035 sq ft vs 361 sq ft
Coway Airmega AP-1512HH Mighty is $420 cheaper. Pay the difference only if cadr matters to you.

Check first: the Blueair Protect 7470i weighs over 25 lb (11 kg). Tick them under deal-breakers if that rules it out.

4 Blueair Protect 7470i5 rankable of 11 specsCoway Airmega AP-1512HH Mighty 1

Deal-breakers

tick what would make you walk away

No Wi-Fi approw
No schedules or remote control from your phone.
Clear:Blueair Protect 7470i · Blueair App, Alexa, Google Home, GermSh…Trips:Coway Airmega AP-1512HH Mighty · Smart Auto Mode + Eco Mode
Under 1,000 sq ft coveragerow
Undersized for an open-plan living area.
Clear:Blueair Protect 7470i · 1,035 sq ftTrips:Coway Airmega AP-1512HH Mighty · 361 sq ft
Over 25 lb (11 kg)row
Hard to move between rooms.
Trips:Blueair Protect 7470i · 27.6 lbClear:Coway Airmega AP-1512HH Mighty · 12.3 lb

At a glance

The handful of numbers that decide most purchases in this category.

2 of 2 differ

CADR

Blueair

270 CFM (Smoke), 275 CFM (Dust), 280 CFM (Pollen)

Coway

233 CFM (Smoke), 246 CFM (Dust), 240 CFM (Pollen)

Coverage area

Blueair

1,035 sq ft (2 air changes/hr) / 418 sq ft (5 air changes/hr)

Coway

361 sq ft (4.8 air changes/hr) / 874 sq ft (2 air changes/hr)

True 3-Year Cost of Ownership (TCO)

Upfront price + 3 years of consumables, fees & essential add-ons

Blueair Protect 7470i

Upfront list price$649

3-Yr SmartFilter RFID dual-layer (Every 12 months (~$80/yr))+$240

3-Year Estimated Total$889

Coway Airmega AP-1512HH Mighty

Upfront list price$229

3-Yr HEPA + 2x carbon pack (Annual filter pack (~$30/yr))+$90

3-Year Estimated Total$319

Room Placement & Bedroom Noise Check

Physical clearance required for airflow, wall placement, and bedroom noise levels.

Ergonomic & Spatial Check

Wall Clearance Required

Cylindrical 360° filters cannot sit flush against walls without choking intake.

Blueair

Requires 12 in perimeter airflow space

Coway

Front-intake design: can sit almost flush against walls (leaves floor space open)

Nighttime Sleep Mode Noise

Levels below 25 dB are virtually silent for light sleepers.

Blueair

Standard sleep speed

Coway

24.4 dB lowest speed (vital ionizer can be toggled off)

Unit Footprint & Dimensions

Blueair

Standard room purifier footprint

Coway

Boxy square unit (16.8 × 18.3 × 9.6 in; 12.3 lb)

The 90-Day Owner Regret Check

Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.

Post-Purchase Truths

Blueair: What to watch for

Maintenance
Requires periodic filter replacements to maintain airflow and odor capture.
Activated carbon and HEPA media gradually saturate, needing replacement once or twice yearly depending on air pollution and pet shedding.

Coway: What to watch for

Hardware Quirk
Ionizer ("Vital Ion") produces negligible ozone and should be disabled.
Many asthma and allergy sufferers immediately toggle the optional ionizer off to ensure completely emission-free mechanical HEPA filtration.

Blueair Protect 7470i$6494 wins

Coway Airmega AP-1512HH Mighty$2291 win

Performance Filters Usability & Smart Design & Ownership

11 of 11 attributes differ. Identical rows are dimmed.

Performance

leads 2-0

Performance specifications. Middle column is Blueair Protect 7470i, right column is Coway Airmega AP-1512HH Mighty.
CADR	270 CFM (Smoke), 275 CFM (Dust), 280 CFM (Pollen) (wins this row: higher)	233 CFM (Smoke), 246 CFM (Dust), 240 CFM (Pollen)
Room size	Master bedrooms, living areas up to 418 sq ft (5 ACH)	Bedrooms, home offices, medium living rooms
Coverage area	1,035 sq ft (2 air changes/hr) / 418 sq ft (5 air changes/hr) (wins this row: higher)	361 sq ft (4.8 air changes/hr) / 874 sq ft (2 air changes/hr)

Filters

2 differences

Filters specifications. Middle column is Blueair Protect 7470i, right column is Coway Airmega AP-1512HH Mighty.
Filter types	SmartFilter with Smart RFID chip (HEPASilent Ultra + Activated Carbon)	4-Stage: Washable Pre-filter + Deodorization Carbon + True HEPA + Vital Ion
Filter life	6–12 months with real-time algorithm filter tracking	12 months (True HEPA) / 6 months (Carbon)

Usability & Smart

leads 1-0

Usability & Smart specifications. Middle column is Blueair Protect 7470i, right column is Coway Airmega AP-1512HH Mighty.
Noise levels	22 dB (Low) – 45 dB (High) (wins this row: lower)	24 dB (Low) – 53 dB (Turbo high)
Energy consumption	43 W max power (Energy Star certified)	77 W max (Energy Star verified, 4.9W in Eco mode)
Smart features	Blueair App, Alexa, Google Home, GermShield 24/7 background mode	Smart Auto Mode + Eco Mode (no Wi-Fi app)
Air quality sensors	Laser particle sensor (PM1, PM2.5, PM10), TVOC, Temp, Humidity	Air quality particle sensor with 3-color real-time LED indicator

Design & Ownership

2 differences

Design & Ownership specifications. Middle column is Blueair Protect 7470i, right column is Coway Airmega AP-1512HH Mighty.
Weight	27.6 lb (12.5 kg)	12.3 lb (5.6 kg) (wins this row: lower)
Warranty	5 years (with product registration) (wins this row: higher)	3 years limited manufacturer warranty

Most rows are from the official spec sheet. Marked rows are other published figures or our summary, not lab tests we ran.

Blueair Protect 7470i source Coway Airmega AP-1512HH Mighty source

Which one should you buy

Pick this one if

Blueair Protect 7470i

HEPASilent Ultra smart air purifier with 24/7 GermShield bacterial protection and SpiralAir 360 vents.

HEPASilent Ultra electrostatic + mechanical filtration kills 99% of germs
SpiralAir omnidirectional airflow distributes clean air evenly
Premium matte build with intuitive LCD air quality touchscreen

What you give up

SmartFilter replacements are relatively costly
Heavier metallic construction

Full Blueair Protect 7470i specs →

Pick this one if

Coway Airmega AP-1512HH Mighty

Award-winning compact 4-stage True HEPA air purifier with Vital Ionizer and energy-saving Eco mode.

High smoke and particulate filtration efficiency in a compact footprint
Eco Mode powers off fan automatically after 30 minutes of clean air
Washable pre-filter extends the life of internal carbon and HEPA filters

What you give up

No Wi-Fi connectivity or mobile smartphone app
Ionizer feature produces trace ozone if left enabled

Full Coway Airmega AP-1512HH Mighty specs →

Best for each use

Bedrooms

Quiet nights: low-speed noise, sleep mode, schedules from your phone

Tied on bedrooms. Coway Airmega AP-1512HH Mighty is cheaper.

The 2 rankable bedrooms specs split 1 to 1.
Saves $420 at list price.

Big rooms & allergies

Open-plan rooms or allergies: CADR, coverage, filter grade

For big rooms & allergies, buy the Blueair Protect 7470i.

Leads 2 of 2 rankable big rooms & allergies specs.
CADR: 270 CFM vs 233 CFM
Coverage area: 1,035 sq ft vs 361 sq ft
Coway Airmega AP-1512HH Mighty is $420 cheaper. Pay the difference only if cadr matters to you.

Low running cost

Cheap to own: filter life, power draw, warranty

Too close to call on low running cost from the spec sheets. Only warranty is rankable here.

Filter life: 6–12 months with real-time algorithm filter… vs 12 months
Energy consumption: 43 W max power vs 77 W max

Every answer above is scored from published figures. A lens uses only the rows that matter for that use, including marked rows that are not on the official sheet. Switch lenses interactively in the panel above.

Done deciding?

Open the full standalone spec sheet for either device.

Blueair Protect 7470i spec sheet Coway Airmega AP-1512HH Mighty spec sheet

Manufacturer pages: Blueair Protect 7470i ↗ · Coway Airmega AP-1512HH Mighty ↗

Common questions

Which is cheaper, the Blueair Protect 7470i or the Coway Airmega AP-1512HH Mighty?

Coway Airmega AP-1512HH Mighty costs $420 less at list price.

What is the biggest catch with the Blueair Protect 7470i or Coway Airmega AP-1512HH Mighty?

Coway Airmega AP-1512HH Mighty has this deal-breaker: no Wi-Fi app. No schedules or remote control from your phone.

Which is better for bedrooms, the Blueair Protect 7470i or the Coway Airmega AP-1512HH Mighty?

Tied on bedrooms. Coway Airmega AP-1512HH Mighty is cheaper. The 2 rankable bedrooms specs split 1 to 1. Saves $420 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.

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