For a bedroom or small office where app control and quiet auto mode matter, get the LEVOIT Core 300S-P; for a medium living room where raw air delivery matters, get the Coway Airmega Mighty AP-1512HH. The LEVOIT is a compact cylinder rated by the maker for 219 sq ft at 4.8 air changes per hour (1,051 sq ft at 1 air change per hour), with AHAM-verified CADR of 141 smoke, 156 dust and 175 pollen CFM, 22 to 50 dB noise, 23 W rated power, and VeSync plus Alexa and Google voice with a PM2.5 auto mode. The Coway is a larger box unit rated for 361 sq ft at 4.8 air changes per hour (1,748 at 1 per hour), with CADR of 233 smoke, 246 dust and 240 pollen, 24 to 53 dB(A) noise, 77 W power, and a particle sensor with auto and eco modes. On 09/15/2026 the Amazon US listing for the exact LEVOIT Core300S-P White showed Buy New with Add to cart and Buy Now, Ships from Amazon.com and Sold by Amazon.com; on 09/12/2026 the Amazon US listing for the exact Coway Mighty Black showed the same Amazon.com shipper and seller pattern. Confirm the live price and availability before deciding; no price is stated here.
Choose by your situation
| Situation | Model to consider | Main tradeoff |
|---|---|---|
| Bedroom or office around 150 to 220 sq ft, light sleeper, want phone and voice control with automatic fan adjustment | LEVOIT Core 300S-P | Less air delivery than the Coway (141 vs 233 smoke CADR); small-room capacity means fewer air changes per hour in a living room; 120 V US-only variant. |
| Living room or large bedroom around 300 to 361 sq ft, cooking odors, pets or dust bursts, want stronger delivery and a washable pre-filter | Coway Mighty AP-1512HH | Bigger and heavier (12.3 lb vs 5.95 lb) with a larger footprint; higher rated power (77 W vs 23 W); deodorization filter replacement about every 6 months. |
Room size and air delivery, side by side
| Criterion | LEVOIT Core 300S-P | Coway Mighty AP-1512HH |
|---|---|---|
| Rated room size at 4.8 air changes per hour | 219 sq ft (1,051 sq ft at 1 per hour) | 361 sq ft (874 at 2 per hour; 1,748 at 1 per hour) |
| CADR, smoke / dust / pollen (CFM) | 141 / 156 / 175, AHAM Verifide | 233 / 246 / 240 |
| Filtration | 3-stage: pre-filter, HEPA-grade main filter, activated carbon; alternate Pet Allergy, Smoke Remover and Toxin Absorber filters sold separately | 4-stage: washable pre-filter, deodorization filter, HEPA filter, bipolar device |
| Noise range | 22 to 50 dB; sleep mode with display off | 24 to 53 dB(A); sleep-quiet operation with eco mode |
| Rated power | 23 W | 77 W |
| Size and weight | 8.7 x 8.7 x 14.2 in; 5.95 lb | 16.8 x 18.3 x 9.6 in; 12.3 lb |
| Controls and automation | VeSync app, Alexa and Google voice, PM2.5 auto mode with air-quality indicator rings, sleep mode, timer, display off, check-filter indicator | Particle sensor with auto mode, eco mode that stops the fan when clean air holds, air-quality indicator, 1/4/8-hour timer, filter indicator |
| Filter upkeep | Check-filter indicator; maker advises genuine LEVOIT replacements for fit and performance | Washable pre-filter; deodorization filter about every 6 months; HEPA about every year |
LEVOIT Core 300S-P: the smart small-room pick
The LEVOIT Core 300S-P in White suits bedrooms and offices where the unit sits near the bed or desk. Fact: the maker spec block lists Model Core 300S, 219 sq ft at 4.8 air changes per hour, 141 CFM CADR, 23 W, 22 to 50 dB, 8.7 x 8.7 x 14.2 in, 5.95 lb, and 120 V 60 Hz; the exact purchasable variant is Core300S-P White 120 V, ASIN B0G19ZCNP9. Fact: the Amazon listing bullets add the AHAM breakdown of 141 smoke, 156 dust and 175 pollen CFM, VeSync remote control with schedules, Alexa and Google voice, and an auto mode that senses PM2.5 and adjusts fan speed with indicator rings. The cylinder draws air from all sides, the 22 dB low end with display-off is built for overnight running, and the carbon stage addresses household odors, smoke and VOCs alongside dust, pollen and pet dander. Its limits are capacity and size of job: 141 smoke CADR is about three-fifths of the Coway, so in a 300-plus sq ft living room it delivers fewer air changes per hour. Inference: for a 150 to 220 sq ft bedroom this capacity leaves headroom for auto mode to run low and quiet; for a large open plan it would need higher fan speeds and more noise to keep up. The Amazon US listing observed on 09/15/2026 carried 4.6 stars across 217 ratings with 1K+ bought in the past month.
Coway Mighty AP-1512HH: the medium-room automatic pick
The Coway Airmega Mighty AP-1512HH in Black suits living rooms, large bedrooms and kitchens where odors, pet hair and dust arrive in bursts. Fact: the maker rates 361 sq ft at 4.8 air changes per hour with CADR 233 smoke, 246 dust and 240 pollen, 4-stage filtration with washable pre-filter, 5 airflow stages including auto and eco, 24 to 53 dB(A), 77 W, and 16.8 x 18.3 x 9.6 in at 12.3 lb. The particle sensor ramps the fan when air gets dirty, eco stops the fan when clean air holds for about 30 minutes, and the washable pre-filter catches hair and large dust before the inner filters, with deodorization about every 6 months and HEPA about every year. Its limits are footprint and running gear: it claims real floor or table space, and 77 W rated power exceeds the LEVOIT 23 W by more than three times. Inference: that extra CADR is what you pay for in size and watts; in a small bedroom much of it idles, while in a 300 to 361 sq ft room it holds air changes without constant high fan. The Amazon US listing observed on 09/12/2026 carried 4.6 stars across 29,073 ratings.
Why this is not the Core 300-P guide
Our published Core 300-P vs Mighty room-size guide covers the manual LEVOIT: manual fan speeds, 2/4/6/8-hour timer, 56 W, 24 to 54.5 dB, and no sensor. This page covers the smart 300S-P: VeSync app, voice control, PM2.5 auto mode with indicator rings, sleep mode with display off, 23 W DC-rated power, and 22 to 50 dB. Fact: the 300S-P and 300-P share the same 8.7 x 8.7 x 14.2 in cylinder footprint, but their CADR, power, noise floor and controls differ, with different ASINs. If you want the cheapest simple bedroom unit and will set the fan yourself, read the 300-P guide; if you want the unit to adjust itself, run quieter at night, and control it from phone or voice, the 300S-P here is the relevant LEVOIT. The Coway side is the same Mighty AP-1512HH Black in both guides because the medium-room alternative has not changed.
Where to check the exact variants
Compare the LEVOIT Core 300S-P White (Amazon listing shipping from Amazon.com and sold by Amazon.com; confirm the live price and delivery) against the Coway Mighty AP-1512HH Black (Amazon listing shipping from Amazon.com and sold by Amazon.com; confirm the live price and delivery). Match the choice to the room and to automation: quiet smart small room goes LEVOIT, sensor-driven medium room with stronger delivery goes Coway.