Name: COWAY Air Purifiers for Home Large Room Up to 3,120ft², 2 Sets of Washable Pre-Filters and True HEPA Filters for Smoke, Allergies, Pet Dander, Odor...
Brand: Coway
SKU: B0722YZ1R1
Price: 649 USD
Availability: InStock
Rating: 4.4 (6465 reviews)

Our Verdict

Coway 400(G) Wins

COWAY Air Purifiers for Home Large Room Up to 3,120ft², 2 Sets of Washable Pre-Filters and True HEPA Filters for Smoke, Allergies, Pet Dander, Odor, AQI, Auto & Sleep Mode, Timer, 5yr Warranty, 400(G) 400 GRAPHITE - High-End Air Purifiers

It offers superior air purification with 416 CADR smoke and covers 650 sq ft. Choose Shark HC502 if you need a 3-in-1 device with heating and fan, despite its lower 133.33 CADR smoke and 208.33 sq ft coverage.

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Bottom Line: Coway 400(G) is the better choice. It offers superior air purification with 416 CADR smoke and covers 650 sq ft.

Key Differences

The most significant spec differences at a glance

416

Cadr Smoke

212% more

133.33

650

Coverage Sq Ft

212% more

208.33

Advantages

Where each product wins

Coway

Cadr Smoke: 212% higher (416.0 vs 133.33)
Coverage Sq Ft: 212% higher (650.0 vs 208.33)

Who Should Buy Which?

Find the right product for your needs

Buy Coway if...

COWAY Air Purifiers for

If you live in a large home or have significant air quality concerns like allergies, smoke, or pet dander across expansive areas, the Coway 400(G) is your ideal choice. This air purifier excels in pure performance, boasting a CADR of 416 and effectively cleaning up to 650 sq ft. You prioritize maximum air purification efficiency and reliability, willing to invest in a robust, dedicated air cleaner with a generous 5-year warranty for peace of mind in your main living spaces.

Buy Shark if...

Shark HC502 3-in-1 Clean

The Shark HC502 is perfect for the practical buyer seeking a versatile solution for smaller rooms, such as a bedroom, home office, or nursery. If you need efficient air purification combined with the convenience of a heater and a fan, this 3-in-1 unit offers excellent value. You prioritize space-saving multi-functionality and a more budget-friendly price point, accepting its 208.33 sq ft coverage for the added comfort of integrated temperature control alongside clean air.

Spec Comparison

8 specs compared

Specification	Coway Air Purifiers for	Shark HC502 3-in-1 Clean
Price	$649	$320
Rating	4.4(6.5k)	4.3(678)
Cadr Smoke	416	133.33
Coverage Sq Ft	650	208.33
Noise Level db Min	22 dB	—
Weight	3.05 lbs	—
Energy Star	Yes	—
Filter Type	True HEPA	Nanoseal HEPA
Smart Sensor	Yes	Yes
Model Number	—	HC502

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Pros & Cons

Quick overview of strengths and weaknesses

Coway Air Purifiers

Pros

Removes 99.999% of 0.01-micron particles.
Covers 780 sq ft with 4 air changes per hour.
Smart Mode adjusts fan speed based on air quality.
Eco Mode shuts off fan when air is clean.

Cons

Stated 3,120 sq ft coverage misleading for 4 ACH.
True HEPA filters require periodic replacement.
No remote control listed in features.

Shark HC502 3-in-1

Pros

Offers air purification, heating, and fan functions.
Exceeds HEPA standards; captures 99.98% of particles.
Auto-adjusts power based on PM1/2.5/10 air quality.
Heats rooms while simultaneously purifying air.

Cons

Covers only 208 sq ft for effective 5x hourly air changes.
Requires periodic replacement of specialized Nanoseal filter

Frequently Asked Questions

Common questions about this comparison

Which air purifier is better suited for large rooms?

The Coway 400(G) is better for large rooms, effectively covering up to 650 sq ft with a high 416 CADR for smoke. The Shark HC502 covers only 208.33 sq ft, making it more suitable for smaller spaces or individual room use.

What's the main difference in air purification capability?

The Coway 400(G) has a significantly higher CADR smoke rating of 416, compared to the Shark HC502's 133.33. This means the Coway can clean a larger volume of air more quickly and effectively, especially for smoke particles.

Is the Shark HC502's 3-in-1 function (purifier, heater, fan) a significant advantage?

Yes, if you need a multi-functional device. The Shark HC502 combines air purification with heating and fan capabilities, offering versatility for year-round comfort. However, its air purification coverage and CADR are lower than the Coway's.

How do their noise levels compare?

The Coway 400(G) has a stated minimum noise level of 22 dB, which is very quiet. The Shark HC502 is described as operating quietly with dimmable display lights, but a specific decibel rating is not provided for direct comparison.