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 Air Purifier 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 a 416 CADR smoke and 650 sq ft coverage. Choose Dyson for its heating and cooling functions, despite lacking specified CADR or coverage.

$649Buy on Amazon

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

Key Differences

The most significant spec differences at a glance

416

Cadr Smoke

100% more

650

Coverage Sq Ft

100% more

Advantages

Where each product wins

Coway

Cadr Smoke: 100% higher (416.0 vs 0)
Coverage Sq Ft: 100% higher (650.0 vs 0)

Who Should Buy Which?

Find the right product for your needs

Buy Coway if...

COWAY Air Purifiers for

If you need powerful, dedicated air purification for a large home, the Coway 400 GRAPHITE is your ideal choice. This unit is perfect for individuals prioritizing clean air for spaces up to 650 sq ft, especially those with allergies, pets, or smoke concerns. Its impressive CADR Smoke of 416.0 ensures rapid air cleaning, while the 22.0 dB minimum noise level allows for undisturbed operation. The 5-year warranty and energy-efficient modes add to its appeal for a buyer focused on health and long-term value.

Buy Dyson if...

Dyson Purifier Hot+Cool HP1

The Dyson Purifier Hot+Cool HP1 is best for buyers seeking a versatile, space-saving climate control solution. Ideal for smaller rooms or apartments, this device provides basic air purification alongside efficient heating and cooling, eliminating the need for separate appliances. If you value smart features like Wi-Fi connectivity, app control, and voice commands, and prioritize year-round comfort from a single unit over robust air purification specifications like CADR, the Dyson HP1 offers a premium, convenient experience.

Spec Comparison

9 specs compared

Specification	Coway Air Purifiers for	Dyson Purifier Hot+Cool HP1
Price	$649	$545
Rating	4.4(6.5k)	4.4(157)
Cadr Smoke	416	0
Coverage Sq Ft	650	0
Noise Level db Min	22 dB	—
Weight	3.05 lbs	—
Energy Star	Yes	—
Filter Type	True HEPA	HEPA H13
Smart Sensor	Yes	Yes
Model Number	—	HP11
WiFi	—	Yes

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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.

Dyson Purifier Hot+Cool

Pros

Captures 99.97% particles >0.3 microns.
Removes gases and 97% of household odors.
Functions as both a heater and a cooler.
Remote control via app or voice commands.

Cons

Lacks a clear CADR rating specification.
Requires periodic filter replacement.
Full functionality depends on app or voice control.

Frequently Asked Questions

Common questions about this comparison

Which purifier is better for comprehensive air cleaning in a large room?

The Coway 400(G) is superior for air cleaning, boasting a 416 CADR for smoke and 650 sq ft coverage. It effectively removes 99.999% of 0.01-micron particles, making it ideal for robust purification needs.

What is the main difference in the CADR smoke rating between these two products?

The Coway 400(G) has a specified CADR smoke rating of 416, indicating strong smoke removal. The Dyson HP1 lists a CADR smoke rating of 0, meaning its purification effectiveness for smoke isn't specified or is significantly lower.

Should I choose the Dyson for its hot and cool functionality?

Yes, if heating and cooling are crucial for you, the Dyson HP1 is a good choice, functioning as an all-in-one climate control device. However, be aware it lacks specific air purification performance metrics like CADR or coverage area.

Which product offers a quieter operation?

The Coway 400(G) specifies a minimum noise level of 22 dB, indicating very quiet operation in sleep mode. The Dyson HP1 does not provide a specified noise level, so direct comparison on this metric isn't possible from the data.