Coway Airmega 150 AP Air Purifier, Sage Green

Sage Green: Coway Airmega 150 AP is a corded air purifier with touch controls, automatic fan adjustment and a washable pre-filter. Its 20 dB Sleep Mode claim and stated coverage of up to 73 m² make it worth considering for quieter room use, though the listing’s technical details should be checked where they differ.

At a glance

An air-quality sensor is claimed to adjust fan speed automatically in Auto Mode.
The listing claims 20 dB operation in Sleep Mode and Quiet Mark certification.
A top-loading, washable pre-filter is described for routine cleaning.
The claimed 281 m³/h CADR and 73 m² room coverage are manufacturer listing figures, not independently verified measurements.

Price

£149.98Save 25%

Reference price: ~~£199.99~~

Price checked: 13 Nov 2026

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Often bought together

COWAY HEPA Air Purifier for Home Bedroom, Pets, Auto, AIRMEGA 150, Green | ECARF & Quiet Mark Certified, CADR 281 m³/h, 20 dB

£149.99

Pros and cons

Pros

Touch controls and Auto Mode provide direct operation without an app or Wi-Fi, according to the listing.
The washable pre-filter can be removed from above, which may simplify routine access.
Customer feedback describes quiet operation and reports that some find its sound unobtrusive at night.

Cons

Corded operation requires access to a mains socket and limits placement compared with a battery-powered unit.

Technical specifications

15 specifications

Identity
Brand	Coway
Model	Airmega 150 AP
Colour	Sage Green

Filtration and room coverage
Filter type listed	Activated Carbon
Particle retention size listed	0.3 Micron
Claimed floor area	73 Square Meters
Claimed CADR	281 m³/h

Controls and operation
Control method	Touch
Operating modes and functions	Auto Mode, Sleep Mode, programmable timer
Claimed Sleep Mode noise level	20 dB
Claimed filter life	up to 12 months depending on usage

Power
Power configuration	Corded Electric
Wattage	35 watts

Dimensions and installation
Dimensions listed	16.5D x 34W x 46.9H centimetres
Weight listed	5.5 Kilograms

What to know before buying

Listing details to confirm

Listing details are inconsistent or unconfirmed: the technical fields list an activated-carbon filter and 0.3-micron particle retention, while feature copy describes HyperCaptive mechanical filtration capturing 99.999% of airborne particles. The listing also gives both 20 dB in Sleep Mode and a general noise-level field of 20 Decibels. Treat coverage, filtration and noise figures as manufacturer claims, and confirm the filter configuration and applicable operating conditions for the selected model.

Who is it for?

A good fit for

People seeking an air purifier with automatic fan adjustment and no app or Wi-Fi setup.
Bedrooms or home offices where a claimed low-noise Sleep Mode is a priority.
Buyers who prefer a removable washable pre-filter and touch controls.

Less suited to

Those needing a cordless purifier or app-based remote control.
Buyers who require independently confirmed coverage or filtration performance.

Coway Airmega 150 AP Air Purifier, Sage Green · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 6,238 ratings

5 stars77%77%
4 stars11%11%
3 stars6%6%
2 stars2%2%
1 star4%4%

Customer feedback highlights quiet operation, perceived improvements in air quality, filtration, appearance and compact size. Some describe the sound as unobtrusive pink noise, while the feedback also mentions quick clearing of stale odours and settings retained after power outages. These are reported experiences, not proof of the listed performance claims. For bedroom use, the positive comments about noise are relevant alongside the manufacturer’s 20 dB Sleep Mode claim, which remains unverified here.

Positive themes

Customers describe the purifier as quiet, and some find its sound unobtrusive.
Feedback reports perceived improvements in air quality and stale odours.
Customers also mention its compact size, appearance and filtration.

Frequently asked questions

Does the Airmega 150 AP need Wi-Fi or an app?

The listing says Auto Mode works with a built-in air-quality sensor and does not require an app, Wi-Fi or account setup.

How loud is it in Sleep Mode?

The listing claims 20 dB in Sleep Mode. Its general noise-level field also states 20 Decibels, so treat this as a listing claim rather than an independently verified measurement.

How often does the filter need replacing?

The listing claims filter life of up to 12 months depending on usage. It does not establish a fixed replacement interval for every household.

What room size does it cover?

The listing states coverage of up to 73 m² and CADR of 281 m³/h. These are manufacturer claims and should not be treated as independently measured results.