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 purification with a 416 CADR smoke rating and covers 780 sq ft with 4 ACH, compared to Dyson's 250 CADR and 400 sq ft. Choose Dyson if you need combined heating and cooling functionality.

$649Buy on Amazon

Bottom Line: Coway 400(G) is the better choice. It offers superior purification with a 416 CADR smoke rating and covers 780 sq ft with 4 ACH, compared to Dyson's 250 CADR and 400 sq ft.

Key Differences

The most significant spec differences at a glance

416

Cadr Smoke

66% more

250

650

Coverage Sq Ft

62% more

400

Advantages

Where each product wins

Coway

Cadr Smoke: 66% higher (416.0 vs 250)
Coverage Sq Ft: 62% higher (650.0 vs 400)

Who Should Buy Which?

Find the right product for your needs

Buy Coway if...

COWAY Air Purifiers for

The Coway 400(G) is ideal for individuals prioritizing superior, dedicated air purification for large rooms. If you suffer from severe allergies, live with pets, or need to tackle smoke and odors across significant areas up to 650 sq ft, its 416 CADR smoke rating and True HEPA filtration make it highly effective. Buyers who value quiet operation (22 dB min), energy efficiency, and a robust 5-year warranty will find the Coway a reliable choice focused solely on exceptional air quality.

Buy Dyson if...

Dyson Purifier Hot+Cool HP07

The Dyson Purifier Hot+Cool HP07 suits those seeking a versatile, all-in-one climate control and purification solution, particularly in rooms up to 400 sq ft. If you need to both purify your air and maintain comfortable temperatures year-round without multiple appliances, the HP07's heating and cooling functions are highly appealing. Tech-savvy users will appreciate its smart sensor, Wi-Fi connectivity for app control, and voice control, making it a convenient and modern choice for integrated home comfort.

Spec Comparison

8 specs compared

Specification	Coway Air Purifiers for	Dyson Purifier Hot+Cool HP07
Price	$649	$590
Rating	4.4(6.5k)	4.4(919)
Cadr Smoke	416	250
Coverage Sq Ft	650	400
Noise Level db Min	22 dB	—
Weight	3.05 lbs	—
Energy Star	Yes	—
Filter Type	True HEPA	HEPA H13
Smart Sensor	Yes	Yes
WiFi	—	Yes

Swipe horizontally to see all columns

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

Purifies, heats, and cools from one device
HEPA H13 sealed system captures pollutants
Covers 400 sq ft, 250 CADR smoke
Real-time air quality data via app and LCD

Cons

Requires brand-specific filter replacements
Large unit size may limit placement options
Heating and cooling functions are not concurrent

Frequently Asked Questions

Common questions about this comparison

Which air purifier is more suitable for large rooms?

The Coway 400(G) is better for large rooms, covering 780 sq ft with 4 air changes per hour. The Dyson HP07 is designed for 400 sq ft. Coway also boasts a higher CADR smoke rating of 416.

What's the main difference in air purification coverage and speed?

Coway 400(G) offers a 416 CADR smoke rating and covers 780 sq ft with 4 air changes per hour. The Dyson HP07 has a 250 CADR smoke rating and covers 400 sq ft. Coway provides faster, broader air purification.

Does either product offer more than just air purification?

Yes, the Dyson Purifier Hot+Cool HP07 also functions as a heater and a fan, offering three functionalities in one device. The Coway 400(G) is a dedicated air purifier, focusing solely on air quality improvement.

Which unit is quieter for operation?

The Coway 400(G) has a minimum noise level of 22 dB, indicating very quiet operation. The Dyson HP07's minimum noise level is not specified in its details. For silent purification, Coway is the safer bet.