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Air purifiers for a 269 sq ft roomAir purifiers for a 25 m² room

Needs 300 m³/h (177 CFM) of smoke CADR. Why? 25 m²269 sq ft · A main bedroom with an en-suite, or a compact living room

Picked by the BuyBySpecs Team

BuyBySpecs on YouTube · sources checked 1 Nov 2026

2 picks for 269 sq ft2 picks for 25 m²

Also big enough for 269 sq ft25 m²

Levoit Vital 200S-P

Levoit

AHAM verified

Really cleans
381 sq ft35 m² 35 m²381 sq ft
Box says
1,862 sq ft173 m² 4.9× overstated
New filter
6–12 months

Winix 5510

Winix

AHAM verified

Really cleans
385 sq ft35 m² 35 m²385 sq ft
Box says
392 sq ft36 m² about right
New filter
12 months

Winix T810

Winix

AHAM verified

Really cleans
411 sq ft38 m² 38 m²411 sq ft
Box says
2,006 sq ft186 m² 4.9× overstated
New filter
12 months

Blueair Blue Pure 311i Max

Blueair

AHAM verified

Really cleans
431 sq ft40 m² 40 m²431 sq ft
Box says
2,207 sq ft205 m² 5.1× overstated
New filter
9 months

Honeywell HPA300

Honeywell

AHAM verified

Really cleans
457 sq ft42 m² 42 m²457 sq ft
Box says
465 sq ft43 m² about right
New filter
3–12 months

Winix 9800

Winix

AHAM verified

Really cleans
513 sq ft47 m² 47 m²513 sq ft
Box says
2,506 sq ft233 m² 4.9× overstated
New filter
3–12 months

3 bigger verified models cover it too, but each is more than twice the size this room needs, so we leave them out here. See every purifier.

Big enough on paper, but not verified

The CADR for these comes from the maker only, so we never make them a pick. We show the maths so you can compare.

Coway Airmega AP-1512HH Mighty

Coway

Not verified

Really cleans
355 sq ft32 m² 32 m²355 sq ft
Box says
1,748 sq ft162 m² 4.9× overstated
New filter
6–12 months

Coway Airmega Mighty2

Coway

Not verified

Really cleans
365 sq ft33 m² 33 m²365 sq ft
Box says
1,800 sq ft167 m² 4.9× overstated
New filter
12 months

Coway Airmega 200M

Coway

Not verified

Really cleans
374 sq ft34 m² 34 m²374 sq ft
Box says
1,748 sq ft162 m² 4.7× overstated
New filter
6–12 months

Rabbit Air A3

Rabbit Air

Not verified

Really cleans
391 sq ft36 m² 36 m²391 sq ft
Box says
1,070 sq ft99 m² 2.7× overstated
New filter
12–24 months

Coway Airmega 400S

Coway

Not verified

Really cleans
499 sq ft46 m² 46 m²499 sq ft
Box says
3,120 sq ft290 m² 6.2× overstated
New filter
6–12 months

Coway Airmega 350

Coway

Not verified

Really cleans
536 sq ft49 m² 49 m²536 sq ft
Box says
2,640 sq ft245 m² 4.9× overstated
New filter
12 months

The box says yes. The maths says no.

These are sold as big enough for 269 sq ft25 m², but at 4.8 air changes an hour they aren't.

  • 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 100 Purifies 810 ft² in 60 minsPurifies 810 ft² in 60 mins (75 m²) really 164 sq ft15 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
  • 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
  • Coway Airmega 150 Purifies 1,035 ft² in 60 minsPurifies 1,035 ft² in 60 mins (96 m²) really 233 sq ft21 m²
  • Xiaomi Smart Air Purifier 4 Compact It can purify a 48 m² room 2 times per hour (517 sq ft)It can purify a 48 m² room 2 times per hour really 206 sq ft19 m²

Before you buy for 269 sq ft25 m²

What 269 sq ft25 m² looks like

A main bedroom with an en-suite, or a compact living room: about 15 × 18 ft (4.5 × 5.5 m)about 4.5 × 5.5 m (15 × 18 ft). With a 2.5 m ceiling that's 63 m³ of air to pass through a filter 4.8 times an hour.

How the picks differ

Spare air: 32% for the Levoit Core 400S-P and 100% for the Levoit EverestAir-P. The more air to spare, the slower and quieter it can run here to keep up (more on noise).

All of them have a PM2.5 sensor with auto mode. None has an ionizer.

New filters: every 12–15 months for the Levoit EverestAir-P and every 6–12 months for the Levoit Core 400S-P (filters). The Levoit Core 400S-P is the most compact at 52 cm tall and 5 kg; the Levoit EverestAir-P stands 58.9 cm and weighs 9.4 kg.

High ceilings

With a 2.7 m ceiling this room needs 324 m³/h of smoke CADR, with 3 m 360 m³/h. Every pick here still covers it at 3 m. (Why ceilings matter)

Open-plan

If this room opens onto a kitchen or hall with no door between, count it too. Add 53 sq ft and you're at If this room opens onto a kitchen or hall with no door between, count it too. Add 5 m² and you're at 322 sq ft30 m²: every pick here still covers that. (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 200S-Ps, each covering 137 sq ft (12 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 200S-Ps, each covering 12 m² (137 sq ft), do the job here (why two can beat one).

Where to put it

In a large bedroom or small living room, put it where you sleep or sit, not tucked into a corner or behind a chair. (Where to put it)

How these were chosen

  1. Only models whose verified smoke CADR gives 4.8 air changes an hour in 269 sq ft25 m² with a 2.5 m ceiling: at least 300 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: 215 sq ft20 m²Bigger: 322 sq ft30 m²

Not exactly 269 sq ft25 m²?

Enter your room and ceiling height. Room pages round up to the next size.