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Deal.ai › Coway

Coway

Coway Airmega 400 HEPA Air Purifier

Coway Airmega 400 HEPA Air Purifier

4.5(301 ratings)

Best price now

$343.99at CowayChecked 37 min ago

Deal: 47% off at Coway →

Compared across 3 stores. Prices are checked against each store and labelled with when.

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Price facts

Lowest price today: $343.99 at Coway (checked Nov 14, 2026).
Checked at 3 stores.

Coway Airmega 400 HEPA Air Purifier prices at every store

CowayNew
In stock
$343.99Checked 37 min ago
Visit Coway
Sylvane.comNew
In stock
$389.99Checked 37 min ago
Visit Sylvane.com
WalmartNew
In stockSold by Coway USA, Inc.
$649.00Checked 37 min ago
Visit Walmart

Coway Airmega 400 HEPA Air Purifier price history

Lowest price we've seen: $343.99 on Nov 14 at Coway. Tracked across 3 stores since Nov 14.

What reviewers say

4.5 / 5301 ratings

From Coway

Smart mode with auto, sleep and eco settings
Real-time air quality monitoring via colored LED indicator
Coverage up to 1,560 sq ft at 2 air changes/hour (3,120 sq ft at 1 change/hour)
HyperCaptive filtration traps 99.999% of nano-sized particles down to 0.01 microns
Quiet operation at 22~52 dB(A) with light-off button for sleep
Washable pre-filter captures hair, fur and dust; filter replacement indicator

Materials: Washable pre-filter plus Max2 filter set (activated carbon + HEPA)
Care: Pre-filter is washable; Max2 filter set lasts about 1 year and is replaced when the indicator shows
Guarantee: 30-day money-back guarantee
Returns: 30 days free return
Shipping: Free shipping to the 48 continental U.S. states; available for purchase, shipping and use only in the U.S.
In the box: Two pre-filters, Two Max2 HEPA filters

Specifications

Coverage Area: 3,120 ft² (in 60 mins)
Air Purification Type: HEPA
CADR Rating: 400 (Pollen)
Automatic Shutoff: Yes
Timer: Yes
Filter Type: HEPA, Washable Pre-Filter
HEPA Filter: Yes
Odor Absorbing: Yes
Permanent Filter: No
Filter Highlights: HEPA Filter
App Control: No
Depth: 14.8 in
Height: 22.8 in
Weight: 24.7 lbs
Width: 14.8 in
Noise Level: 22~52 dB(A)
Functionality Type: Air Purifier
Speed Settings: 4
Modes: Auto mode
Functionality Highlights: With Timer
Color: White
Portability: Yes (has handles), No
Shape: Tower
Design Highlights: With Digital Display

Questions and answers

Where is the Coway Airmega 400 HEPA Air Purifier cheapest?: At Coway, for $343.99, 47% off, as of our latest check.
What do buyers say about the Coway Airmega 400 HEPA Air Purifier?: Rated 4.5 out of 5 from 301 ratings.
Where can I buy the Coway Airmega 400 HEPA Air Purifier?: 3 stores we checked sell it, including Coway, Sylvane.com, Walmart.

Stores we've priced the Coway Airmega 400 HEPA Air Purifier at

Walmart deals and prices

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