No current price: sold on Dreo's own store ($99.99), which our price feeds do not cover
22 facts in comparison
Dreo Air Purifier 338S vs Shark BreatheClear Compact Pro (HP062GN) vs Coway Airmega Mighty2 AP-1512N
Coverage area settles this one before anything else gets a hearing. Measured at 4.8 air changes an hour, the Mighty2 covers a living room, the Dreo 338S covers a bedroom, and the Shark Compact Pro covers a nursery or the corner of a desk. The boxes tell a different story, because Dreo and Shark both quote a one-air-change figure that makes their machines look several times larger.
They end up side by side because all three are sensor-driven purifiers with carbon, an auto mode and a sleep setting, sold to the same households. What separates them is the size of the room and what comes with the filter.
The 338S has Wi-Fi, an app and voice control, a very low noise floor and a compact cylinder. It publishes a single airflow figure in place of proper smoke, dust and pollen ratings, and several specs are missing from its sheet. The Shark's main element lasts six years behind a washable pre-filter, which removes most of the running cost, yet Shark states no CADR, no decibel figure and no wattage, and claims no rated HEPA class.
Coway went the other way, and the Mighty2 cleans by far the largest room here on a modest power draw with no app, no voice and no Wi-Fi.
Put the Shark in anything bigger than a small bedroom and it falls behind. An open-plan living space is too much for the Dreo, whatever its box says. And a buyer who wants to schedule the purifier from a phone, or check air quality from the office, will find nothing to do with the Coway.
Editor’s note
I'd put the Mighty2 in any living room. Its smoke CADR of 240 CFM gives it 372 square feet at 4.8 air changes an hour, about double the Dreo's 178 and far beyond the Shark's 62. It draws 56 watts at full speed and has a 19 dB floor, close to the Dreo's 18. Its carbon and HEPA layers share one cartridge, and it has no connectivity at all.
The Dreo 338S is good at being quiet and controllable in a bedroom. Its 115 CFM figure is Dreo's own, labeled a CADR without the separate smoke, dust and pollen ratings that would let you check it, and the 856 square feet on the box is a one-air-change number. Buyers who would set auto mode once and leave it should look at the plain 338, which cleans the same way without Wi-Fi.
The Shark is the hardest to judge, because its 300 square foot headline is the only performance figure Shark gives. The long filter is the part I would credit, and the light-sensing night mode helps in a nursery. Anyone choosing by verified numbers should walk past it.
Category strengths
- Dreo Air Purifier 338S
- Shark BreatheClear Compact Pro (HP062GN)
- Coway Airmega Mighty2 AP-1512N
Spec wins (head-to-head)
- Dreo Air Purifier 338S 2
- Shark BreatheClear Compact Pro (HP062GN) 3
- Coway Airmega Mighty2 AP-1512N 2
Why Dreo Air Purifier 338S?
- A slightly lower min noise level ?18 dB vs 19 dB
- Has voice assistant ?
Why Shark BreatheClear Compact Pro (HP062GN)?
- A much higher filter life ?72 months vs 12 months
- A much lighter build ?2.53 kg vs 6.9 kg
- A more compact design ?293 mm vs 455 mm
Why Coway Airmega Mighty2 AP-1512N?
- A much higher CADR (smoke) ?240 CFM vs 115 CFM
- A much higher coverage area ?372 sq ft vs 178 sq ft
Key real-world differences
The spec sheet pulls in both directions. These are the gaps big enough to shape the decision — with the actual figures, and what each one means in real-world use.
- Coverage areaPerformance178 sq ft vs 62 sq ft vs 372 sq ft — 6× more for the Coway Airmega Mighty2 AP-1512N
The room size the purifier is rated to clean effectively.
- CADR (smoke)Performance115 CFM vs — vs 240 CFM — 2.1× more for the Coway Airmega Mighty2 AP-1512N
Clean Air Delivery Rate — how quickly smoke particles are scrubbed from the air.
- Filter lifeFiltration— vs 72 months vs 12 months — 6× more for the Shark BreatheClear Compact Pro (HP062GN)
How long the main filter lasts before replacement.
- Voice assistantSmart featuresYes vs — vs No — only the Dreo Air Purifier 338S has it
Works with Alexa and Google Assistant.
- WeightDesign— vs 2.53 kg vs 6.9 kg — 63.3% less for the Shark BreatheClear Compact Pro (HP062GN)
A lighter unit is easier to move between rooms.
Which one should you buy?
There is no single answer — it depends on what you will actually use it for. Match your priority to the pick below.
- Best for performance Coway Airmega Mighty2 AP-1512N takes the category 100 to 43 — driven by coverage area (178 sq ft vs 62 sq ft vs 372 sq ft).
- Best for design Shark BreatheClear Compact Pro (HP062GN) takes the category 100 to 0 — driven by weight (— vs 2.53 kg vs 6.9 kg).
Where each one falls short
Dreo Air Purifier 338S
- CADR (smoke): 115 CFM vs — vs 240 CFM
- 8 specs are unreported (shown as Unknown) and excluded from its scores.
Shark BreatheClear Compact Pro (HP062GN)
- Coverage area: 178 sq ft vs 62 sq ft vs 372 sq ft
- 9 specs are unreported (shown as Unknown) and excluded from its scores.
Coway Airmega Mighty2 AP-1512N
- Filter life: — vs 72 months vs 12 months
- Voice assistant: Yes vs — vs No
- Weight: — vs 2.53 kg vs 6.9 kg
- 1 spec is unreported (shown as Unknown) and excluded from its scores.
What matters to you?
Drag the sliders to weight each category and re-rank the products to suit your priorities.
Score breakdown
Performance
Filtration
Noise & power
Design
Smart features
Specs last verified October 9, 2026Dreo Air Purifier 338S: 14 of 22 specs verified (64%)Shark BreatheClear Compact Pro (HP062GN): 13 of 22 specs verified (59%)Coway Airmega Mighty2 AP-1512N: 21 of 22 specs verified (95%)Unverified specs show as Unknown — never estimated, never scored
Where to buy
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What reviewers say
The bottom line
Size the room first and the choice follows. A living room or open-plan space needs the Mighty2, the only purifier here with the airflow for it, and it runs efficiently enough to leave on all day. It has no app of any kind. A bedroom or home office suits the Dreo 338S if you will use its scheduling and voice control, since the quiet floor and the app are the reasons to pick it. The Shark fits only the smallest room, and its case rests on the long-life filter and low running cost, taken on Shark's word because the spec sheet leaves out airflow, noise and power.
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