Name: Coway AP-2015F Airmega 400 Smart Air Purifier (Covers 1,560 sq. ft.), True HEPA Air Purifier with Smart Technology, White 400 WHITE
Brand: Coway
SKU: B01C9RIACG
Price: 349 USD
Availability: InStock
Rating: 4.4 (6465 reviews)

Our Verdict

Coway Airmega 400 Wins

Coway AP-2015F Airmega 400 Smart Air Purifier (Covers 1,560 sq. ft.), True HEPA Air Purifier with Smart Technology, White 400 WHITE - High-End Air Purifiers

It offers superior coverage (1,560 sq. ft.) and faster purification (CADR 328) compared to Shark's 104 sq. ft. and CADR 66.67. Choose Shark for small rooms needing integrated heating/cooling.

$349Buy on Amazon

Bottom Line: Coway Airmega 400 is the better choice. It offers superior coverage (1,560 sq.

Key Differences

The most significant spec differences at a glance

328

Cadr Smoke

392% more

66.67

1,560

Coverage Sq Ft

1398% more

104.17

Advantages

Where each product wins

Coway

Cadr Smoke: 392% higher (328.0 vs 66.67)
Coverage Sq Ft: 1398% higher (1560.0 vs 104.17)

Who Should Buy Which?

Find the right product for your needs

Buy Coway if...

Coway AP-2015F Airmega 400

The Coway Airmega 400 is ideal for homeowners or businesses with large, open-plan living areas, or multiple interconnected rooms up to 1,560 sq. ft., who prioritize comprehensive and rapid air purification. If you or your family suffer from allergies or live in areas with significant air pollution and demand thorough cleaning (99.999% of 0.01-micron particles), this Energy Star-certified unit with True HEPA and smart sensors is perfect. You value powerful, efficient, and consistent performance over multi-functionality.

Buy Shark if...

Shark HC451 3-in-1 Clean

The Shark HC451 is best for individuals in small apartments, dorm rooms, or offices where space is limited and multiple functions are desired from one device. If you need a purifier for a bedroom or a small office (up to 104 sq. ft.) and appreciate the added convenience of integrated heating and fan cooling capabilities, the Shark is a great fit. Its quiet operation, Nanoseal HEPA filter, and oscillating airflow make it suitable for personal spaces where comfort and versatility are key.

Spec Comparison

9 specs compared

Specification	Coway AP-2015F Airmega 400	Shark HC451 3-in-1 Clean
Price	$349	$310
Rating	4.4(6.5k)	4.3(355)
Cadr Smoke	328	66.67
Coverage Sq Ft	1560	104.17
Noise Level db Min	22 dB	—
Weight	24.7 lbs	—
Energy Star	Yes	—
Filter Type	True HEPA	Nanoseal HEPA
Smart Sensor	Yes	Yes
Noise Level db Max	52 dB	—
Model Number	—	HC451

Swipe horizontally to see all columns

Pros & Cons

Quick overview of strengths and weaknesses

Coway AP-2015F Airmega

Pros

Covers 1,560 sq. ft. in 30 minutes.
Filters 99.999% of 0.01-micron airborne particles.
Reduces 99% of VOCs and odors effectively.
Automatically adjusts fan speed to optimize air quality.

Cons

Maximum noise level reaches 52 dB.
Requires periodic filter replacement and cleaning.
Unit weighs 24.7 lbs.

Shark HC451 3-in-1

Pros

Purifies air, heats rooms, and provides fan cooling.
Nanoseal filter captures 99.98% of airborne particles.
Clean Sense IQ auto-adjusts purification power.
Operates quietly with dimmable lights for sleep.

Cons

Effective purification covers only 104 sq ft.
Low CADR of 67 for smoke limits purification speed.
Requires periodic filter replacements, adds cost.

Frequently Asked Questions

Common questions about this comparison

Which is better for large rooms?

The Coway Airmega 400 is superior for large spaces, covering 1,560 sq. ft. with a CADR of 328 for smoke. The Shark HC451 is designed for smaller rooms, purifying up to 104 sq. ft. with a CADR of 66.67.

What's the main difference in air purification speed?

The Coway Airmega 400 has a significantly higher CADR (Clean Air Delivery Rate) for smoke at 328, meaning it purifies air much faster. The Shark HC451 has a CADR of 66.67, suitable for smaller areas.

Is the Shark's 3-in-1 feature worth it?

Yes, if you need a compact, multi-functional device for a small room. The Shark HC451 combines air purification with heating and fan cooling, offering convenience and saving space, making it versatile for personal use.

Which unit operates more quietly?

The Coway Airmega 400 has a minimum noise level of 22 dB. The Shark HC451 is noted for operating quietly, especially with dimmable lights for sleep, though a specific minimum dB level is not provided for direct comparison.