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Coway Airmega AP-1512HH vs Levoit Core 400S is one of the most searched air purifier matchups, and for good reason: both are mid-priced, proven performers for bedrooms and living rooms, and both clean the air fast in independent tests. The Coway is the long-running favorite with an ionizer and eco mode, while the Levoit adds app control, a sleep mode and lower running costs. We compared specs, expert testing and owner reviews to help you decide.
Part of our Home Comfort, Backup Power & Tool Guides.
The short answer
Buy the Levoit Core 400S if you want app and voice control, a quieter sleep mode, a slightly higher clean air delivery rate and lower electricity use. Buy the Coway Airmega AP-1512HH if you prefer simple button controls with no app, strong odor removal and a proven design with a long track record. Our overall pick is the Levoit Core 400S for most homes, with the Coway a close second.
Check price: Coway Airmega AP-1512HH →
Check price: Levoit Core 400S →
Side-by-side specs
| Spec | Coway Airmega AP-1512HH | Levoit Core 400S |
|---|---|---|
| Clean air delivery rate (CADR) | About 233 CFM | About 260 CFM |
| Recommended room size | Up to about 361 sq ft | Up to about 403 sq ft |
| Filtration | Pre-filter, carbon deodorizing filter, HEPA filter, optional ionizer | Pre-filter, particle filter and pelleted activated carbon in one bonded filter |
| Fan speeds | 3 plus auto and eco mode | Sleep plus multiple speeds and auto mode |
| Air quality sensor | Yes, with color indicator | Yes, laser particle sensor with display |
| Smart features | None (button controls) | VeSync app, Alexa and Google Assistant |
| Max power draw | About 77W | About 38 to 40W |
| Weight | About 12.8 lb | About 10.5 lb |
| Shape | Slim, rectangular tower | Compact cylinder |
| Price range | Mid-range ($150 to $250) | Mid-range ($150 to $250) |
Cleaning performance
Both purifiers are excellent at what matters most: pulling fine particles out of the air. In one independent head-to-head test in a 320-square-foot room, each cut PM2.5 levels by about 96% within an hour at top speed, with nearly identical final readings. The Levoit has the higher rated CADR, around 260 CFM against about 233 CFM for the Coway, and it cleared a smoke chamber a few seconds faster in that same test. Another lab-style review found the Levoit cleared a 728-cubic-foot test room in about 24 minutes, matching other popular purifiers in its class.
Winner: Levoit Core 400S, by a small margin thanks to its higher CADR and larger room rating.
Odors and smoke
The Coway uses a separate fibrous carbon deodorizing layer, and reviewers consistently praise how well it clears cooking smells. The Levoit packs pelleted activated carbon into its combined filter, and Levoit sells specialty versions such as Smoke Remover and Pet Allergy filters with more carbon. One comparison found the Levoit slightly better at odors, while hands-on Coway testing found it left a kitchen smelling fresh after burnt breakfast. In practice, both handle everyday odors well; the Levoit’s specialty filters give it the edge for heavy smoke.
Winner: Levoit Core 400S, mainly for its optional higher-carbon filters.
Noise and sleep
The Levoit has a dedicated sleep mode that measures in the mid-30s dBA, quiet enough for most bedrooms, and its top speed is a little quieter than the Coway’s in comparison testing. The Coway has no separate sleep mode. Its highest setting is loud enough that one reviewer switched to eco mode at night, though its lowest speed is quiet. Owners frequently describe the Coway as quiet on its low setting.
Winner: Levoit Core 400S, for its sleep mode and lower top-speed noise.
Smart features and ease of use
If you like controlling devices from your phone, the Levoit is the clear choice: the VeSync app offers schedules, auto-mode settings and filter tracking, and it works with Alexa and Google Assistant. Some reviewers dislike that the app shows ads for other Levoit products. The Coway keeps things simple with five buttons, a three-color air quality light, auto mode, a timer and an eco mode that idles the fan when air is clean. Some people prefer that no-app simplicity. One hands-on Coway review noted that auto mode tended to stay on the lowest fan speed.
Winner: Levoit Core 400S for smart-home fans; the Coway is the better pick if you never want an app.
Energy use and running costs
The Levoit draws roughly half the power of the Coway at top speed, around 38 to 40 watts versus about 77 watts. Running both around the clock on max, one comparison estimated the Levoit at about half the monthly electricity cost of the Coway. Filter costs depend on use and which replacement you buy. The Levoit’s all-in-one bonded filter is easy to swap, but you replace the pre-filter and carbon together. The Coway uses separate filters, and Coway offers filter subscriptions.
Winner: Levoit Core 400S, for lower power consumption.
Design and extras
The Coway’s slim, flat shape fits against a wall or on a dresser, and it includes a bipolar ionizer you can switch on or off. The ionizer is off by default; one reviewer noticed a faint chlorine-like smell when it was on and used it only briefly due to ozone concerns. The Levoit’s cylinder pulls air from all sides, so it works best with some clearance around it, and its touch display shows live air quality readings.
Winner: Tie. The Coway fits tighter spaces; the Levoit has the more informative display.
Pros and cons
Coway Airmega AP-1512HH
|
Levoit Core 400S
|
What owners say: Coway owners like its looks, quiet low speeds and automatic controls, and many have used one for years; complaints focus on noise at the highest speed and the ionizer smell for those who turn it on.
What owners say: Levoit owners praise the app, the quiet sleep mode and how quickly it clears smoke and cooking smells; the common gripes are the cost of specialty filters and the in-app promotions.
Which should you buy?
Choose the Coway Airmega AP-1512HH if: you want a set-and-forget purifier with physical buttons; you do not want another app; you need a slim unit that sits close to a wall; or you mainly want strong odor control in a kitchen or living room.
Choose the Levoit Core 400S if: you want a purifier for the bedroom with a true sleep mode; you like app schedules and voice control; you want lower electricity use; or you deal with smoke or pets and want a higher-carbon filter option.
In the Coway Airmega AP-1512HH vs Levoit Core 400S matchup, the Levoit wins narrowly overall, but both are excellent purifiers for rooms of roughly 350 to 400 square feet.
Check price: Coway Airmega AP-1512HH →
Check price: Levoit Core 400S →
Alternatives worth a look
- Coway Airmega Mighty2: the newer successor to the AP-1512HH for shoppers who want Coway’s latest version.
- Levoit Vital 200S: a slightly cheaper Levoit with a removable, washable pre-filter.
- Austin Air HealthMate: a heavy-duty purifier known for its large carbon filter, for bigger rooms and stubborn odors.
FAQ
Is the Coway AP-1512HH ionizer safe?
The ionizer is optional and off by default. Some people prefer to leave it off because ionizers can produce small amounts of ozone, and one reviewer noticed a slight smell when it was on. The purifier works well with the ionizer switched off.
How often do you replace the filters?
It depends on your air quality and how many hours you run the purifier. Both units have filter reminders, and each manufacturer publishes its recommended replacement schedule. Running on high in a smoky or dusty home shortens filter life.
Which is better for allergies and pets?
Both capture fine particles like dust and pet dander very effectively. The Levoit offers a Pet Allergy filter option with extra carbon for odors. If you have asthma or allergies, ask your doctor about air cleaning as part of your overall plan.
Can one purifier clean a whole house?
Not effectively. Both are sized for a single room of roughly 350 to 400 square feet. For an open floor plan or multiple bedrooms, consider one purifier per main room or a larger model.
Related guides
- The Best Air Purifiers of 2026 for Allergies, Smoke and Pets
- The Best Humidifiers of 2026 for Dry Winter Air
- The Best Smart Thermostats of 2026
- Home Comfort, Backup Power & Tool Guides
Sources
Air Purifier First: Levoit Core 400S vs Coway AP-1512HH; HouseFresh: Levoit Core 400S review; Hunker: Coway Airmega Mighty AP-1512HH review. Owner feedback is summarized in our own words from public reviews. Photos courtesy of Unsplash.