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Air purifiers for a 538 sq ft roomAir purifiers for a 50 m² room

Needs 600 m³/h (354 CFM) of smoke CADR. Why? 50 m²538 sq ft · An open-plan kitchen and living room

Picked by the BuyBySpecs Team

BuyBySpecs on YouTube · sources checked 1 Nov 2026

2 picks for 538 sq ft2 picks for 50 m²

Our pickAHAM verified

Medify MA-112

Medify Air · MA-112

Really cleans
905 sq ft84 m² 84 m²905 sq ft
New filter
every 4 months
See it on Amazon: Medify MA-112

Covers 905 sq ft84 m² (84 m²905 sq ft) · 68% spare

Why it's here: The smallest verified model with 25% more air than this room needs, so it needn't run flat out.

Specs, sources and trade-offs

Also big enough for 538 sq ft50 m²

Levoit Core 600S-P

Levoit

AHAM verified

Really cleans
595 sq ft55 m² 55 m²595 sq ft
Box says
2,909 sq ft270 m² 4.9× overstated
New filter
6–12 months

Blueair Blue Pure 211i Max

Blueair

AHAM verified

Really cleans
662 sq ft61 m² 61 m²662 sq ft
Box says
3,235 sq ft301 m² 4.9× overstated
New filter
9 months

The box says yes. The maths says no.

These are sold as big enough for 538 sq ft50 m², but at 4.8 air changes an hour they aren't.

  • Coway Airmega 400S Purifies 3,120 ft² in 60 minsPurifies 3,120 ft² in 60 mins (290 m²) really 499 sq ft46 m²
  • Blueair Blue Pure 311i Max Quickly cleans 439 ft² every 12.5 minutes & 2,207 ft² in 1 hourQuickly cleans 439 ft² every 12.5 minutes & 2,207 ft² in 1 hour (205 m²) really 431 sq ft40 m²
  • GermGuardian AC4825E Cleans a 153 sq. ft. room in just 12.5 minutes or up to 743 sq. ft. every hourCleans a 153 sq. ft. room in just 12.5 minutes or up to 743 sq. ft. every hour (69 m²) really 150 sq ft14 m²
  • Coway Airmega AP-1512HH Mighty Purifies 1,748 ft² in 60 minsPurifies 1,748 ft² in 60 mins (162 m²) really 355 sq ft32 m²
  • Coway Airmega Mighty2 Purifies 1,800 ft² in 60 minsPurifies 1,800 ft² in 60 mins (167 m²) really 365 sq ft33 m²
  • Coway Airmega 100 Purifies 810 ft² in 60 minsPurifies 810 ft² in 60 mins (75 m²) really 164 sq ft15 m²
  • Coway Airmega 350 Purifies 2,640ft² in 60 minsPurifies 2,640ft² in 60 mins (245 m²) really 536 sq ft49 m²
  • Levoit Core 200S-P Changes the air in a 672 ft2 room once per hourChanges the air in a 672 ft2 room once per hour (62 m²) really 137 sq ft12 m²
  • Levoit Core 300 Changes the air in a 1066 ft2 room once per hourChanges the air in a 1066 ft2 room once per hour (99 m²) really 217 sq ft20 m²
  • Levoit Vital 100S-P Ideal Room Size: 1066 ft2 (1 ACH) / 222 ft2 (4.8 ACH)Ideal Room Size: 1066 ft2 (1 ACH) / 222 ft2 (4.8 ACH) (99 m²) really 217 sq ft20 m²
  • Levoit Vital 200S-P Changes the air in a 1862 ft2 room once per hourChanges the air in a 1862 ft2 room once per hour (173 m²) really 381 sq ft35 m²
  • Blueair Blue Pure 511i Max Quickly cleans 237 ft² every 12.5 minutes & 1,138 ft² in 1 hourQuickly cleans 237 ft² every 12.5 minutes & 1,138 ft² in 1 hour (106 m²) really 233 sq ft21 m²
  • Winix 9800 Also cleans rooms up to 2,506 sq ft in 1 hourAlso cleans rooms up to 2,506 sq ft in 1 hour (233 m²) really 513 sq ft47 m²
  • Winix T810 Also cleans rooms up to 2,006 sq ft in 1 hourAlso cleans rooms up to 2,006 sq ft in 1 hour (186 m²) really 411 sq ft38 m²
  • Levoit Core 400S-P Changes the air in a 1718 ft2 room once per hourChanges the air in a 1718 ft2 room once per hour (160 m²) really 356 sq ft33 m²
  • Coway Airmega 200M Purifies 1,748 ft² in 60 minsPurifies 1,748 ft² in 60 mins (162 m²) really 374 sq ft34 m²
  • Coway Airmega 150 Purifies 1,035 ft² in 60 minsPurifies 1,035 ft² in 60 mins (96 m²) really 233 sq ft21 m²
  • Rabbit Air A3 Normal Residential Use (2 Air Changes Per Hour): 1,070 sq. ft.Normal Residential Use (2 Air Changes Per Hour): 1,070 sq. ft. (99 m²) really 391 sq ft36 m²

Before you buy for 538 sq ft50 m²

What 538 sq ft50 m² looks like

An open-plan kitchen and living room: about 21 × 25 ft (6.5 × 7.5 m)about 6.5 × 7.5 m (21 × 25 ft). With a 2.5 m ceiling that's 125 m³ of air to pass through a filter 4.8 times an hour.

How the picks differ

Spare air: 68% for the Medify MA-112 and none for the Levoit EverestAir-P. The more air to spare, the slower and quieter it can run here to keep up (more on noise).

Only the Levoit EverestAir-P has a PM2.5 sensor with auto mode. None has an ionizer.

New filters: every 12–15 months for the Levoit EverestAir-P and every 4 months for the Medify MA-112 (filters). The Levoit EverestAir-P is the most compact at 58.9 cm tall and 9.4 kg; the Medify MA-112 stands 71.9 cm and weighs 14.9 kg.

High ceilings

With a 2.7 m ceiling this room needs 648 m³/h of smoke CADR, with 3 m 720 m³/h. At 3 m only the Medify MA-112 still covers it. For a high ceiling, look at the 645 sq ft60 m² picks. (Why ceilings matter)

Open-plan

If this room opens onto a kitchen or hall with no door between, count it too. Add 107 sq ft and you're at If this room opens onto a kitchen or hall with no door between, count it too. Add 10 m² and you're at 645 sq ft60 m²: of the picks here, only the Medify MA-112 still covers it. (Open-plan spaces)

One purifier or two?

In a long or L-shaped room, two smaller units at opposite ends clean more evenly than one. Two Levoit Core 400S-Ps, each covering 356 sq ft (33 m²), do the job here (In a long or L-shaped room, two smaller units at opposite ends clean more evenly than one. Two Levoit Core 400S-Ps, each covering 33 m² (356 sq ft), do the job here (why two can beat one).

Where to put it

In an open-plan space, put it in the part you use most, or use two, one at each end. (Where to put it)

How these were chosen

  1. Only models whose verified smoke CADR gives 4.8 air changes an hour in 538 sq ft50 m² with a 2.5 m ceiling: at least 600 m³/h.
  2. Our pick is the smallest model with 25% more air than the room needs, so it needn't run flat out. Each card says why it's there.
  3. We don't test purifiers ourselves. The CADR behind every pick is certified by AHAM; the filter and feature facts are the makers' own, and each model's page links to them.
  4. No prices, and brands can't pay to be included. The full method

Other room sizes

Smaller: 430 sq ft40 m²Bigger: 645 sq ft60 m²

Not exactly 538 sq ft50 m²?

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