, home
Menu

Air purifiers for a 161 sq ft roomAir purifiers for a 15 m² room

Needs 180 m³/h (106 CFM) of smoke CADR. Why? 15 m²161 sq ft · A double bedroom or a kids' room

Picked by the BuyBySpecs Team

BuyBySpecs on YouTube · sources checked 1 Nov 2026

2 picks for 161 sq ft2 picks for 15 m²

Our pickAHAM verified

Levoit Core 300

Levoit · Core 300

Really cleans
217 sq ft20 m² 20 m²217 sq ft
New filter
every 6–8 months
See it on Amazon: Levoit Core 300

Covers 217 sq ft20 m² (20 m²217 sq ft) · 33% 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 161 sq ft15 m²

Levoit Vital 100S-P

Levoit

AHAM verified

Really cleans
217 sq ft20 m² 20 m²217 sq ft
Box says
1,066 sq ft99 m² 4.9× overstated
New filter
6–12 months

11 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 100

Coway

Not verified

Really cleans
164 sq ft15 m² 15 m²164 sq ft
Box says
810 sq ft75 m² 4.9× overstated
New filter
12 months

Coway Airmega 150

Coway

Not verified

Really cleans
233 sq ft21 m² 21 m²233 sq ft
Box says
1,035 sq ft96 m² 4.4× overstated
New filter
6–12 months

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 161 sq ft15 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
  • Levoit Core Mini-P Changes the air in a 254 ft2 room once per hourChanges the air in a 254 ft2 room once per hour (24 m²) really 51 sq ft4 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

Before you buy for 161 sq ft15 m²

What 161 sq ft15 m² looks like

A double bedroom or a kids' room: about 11 × 15 ft (3.5 × 4.5 m)about 3.5 × 4.5 m (11 × 15 ft). With a 2.5 m ceiling that's 38 m³ of air to pass through a filter 4.8 times an hour.

How the picks differ

Spare air: 33% for the Levoit Core 300 and 40% for the Blueair Blue Pure 511i Max. The more air to spare, the slower and quieter it can run here to keep up (more on noise).

Only the Blueair Blue Pure 511i Max has a PM2.5 sensor with auto mode. None has an ionizer.

New filters: every 9 months for the Blueair Blue Pure 511i Max and every 6–8 months for the Levoit Core 300 (filters).

High ceilings

With a 2.7 m ceiling this room needs 195 m³/h of smoke CADR, with 3 m 216 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 54 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 215 sq ft20 m²: every pick here still covers that. (Open-plan spaces)

One purifier or two?

A double bedroom or a kids' room: one purifier is enough, as long as the door to the next room is shut or you count that room too (when it isn’t).

Where to put it

In a bedroom or nursery, put it near the bed, with the air inlet clear of bedding and furniture, and keep the door shut at night. (Where to put it)

How these were chosen

  1. Only models whose verified smoke CADR gives 4.8 air changes an hour in 161 sq ft15 m² with a 2.5 m ceiling: at least 180 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: 107 sq ft10 m²Bigger: 215 sq ft20 m²

Not exactly 161 sq ft15 m²?

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